CN113513453A

CN113513453A - Heavy object carrying device between wind driven generator cabin and hub

Info

Publication number: CN113513453A
Application number: CN202110977266.1A
Authority: CN
Inventors: 任建华; 唐云; 曹朔; 邓涛; 张喜君; 杨全; 王茂全; 张童
Original assignee: Huaneng Tongwei Wind Power Co ltd
Current assignee: Huaneng Tongwei Wind Power Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2021-10-19

Abstract

The invention discloses a device for carrying heavy objects between a cabin and a hub of a wind driven generator, which comprises the hub and a flow guide cover, wherein a cavity is formed between the hub and the flow guide cover. The heavy object carrying device between the wind driven generator cabin and the hub provided by the invention can limit the movement track of the heavy object conveyed to the inlet of the hub, effectively prevent other equipment in the hub from being damaged, facilitate the conveyance of the heavy object and reduce the burden and safety risk of workers.

Description

Heavy object carrying device between wind driven generator cabin and hub

Technical Field

The invention relates to the technical field of wind driven generators, in particular to a device for carrying heavy objects between a cabin and a hub of a wind driven generator.

Background

In recent years, with the rapid development of new energy industry, the number of wind generating sets (referred to as fans for short) is increasing day by day, and the overhaul and maintenance work of the wind generating sets gradually becomes the key work of equipment management of power generation enterprises.

The fan hub is of a cast iron hollow structure, and relevant equipment of a variable pitch system is arranged inside the hub. The outer portion of the hub is wrapped by the glass fiber reinforced plastic air guide cover, a cavity structure is formed between the hub and the air guide cover, the air guide cover needs to advance in the cavity structure between the hub and the air guide cover to reach a hub inlet located at the foremost end, and the air guide cover enters the inside of the hub through the hub inlet.

The 2.0MW double-fed wind turbine generator of a certain manufacturer is taken as an example for detailed description, the height of a tower barrel of the wind turbine generator is 80 m, the tower barrel reaches an inlet at the front end of a hub from the upper part of the hub and enters the inside of the hub:

the maintenance personnel enter the engine room firstly, rotate through controlling the wheel hub, when the cavity structure in the middle of the root of two blades is inosculated with the window of the engine room, lock the wheel hub, at this moment, the engine room and the wheel hub establish a channel, personnel and spare parts can pass through the channel, advance in the cavity structure between the outer layer of the wheel hub and the air guide sleeve, reach the inlet at the front end of the wheel hub, enter the inner space of the wheel hub through the inlet, and then can carry out maintenance operation.

In view of the fact that the cavity structural space between the hub and the air guide sleeve is narrow and small (the height of the narrowest part is less than 0.7m), the hub of the fan is of a sphere-like structure, the action track of personnel and equipment entering the hub is an arc line, the action is very inconvenient, equipment such as a variable-pitch lubricating oil pipe, an oil distributor and an oil collecting bottle is installed at the root of each blade, and parts such as a variable-pitch motor and a driver can only be manually dragged when being transferred from a cabin to the hub, slide on the outer surface of the hub, waste time and labor, and easily cause damage to other accessory equipment due to the problems of shaking and shifting or slipping of the parts, and the safety risks such as falling of heavy objects, smashing and the like exist due to the height difference.

Disclosure of Invention

In order to solve the problems, the invention provides a heavy object carrying device between a wind driven generator cabin and a hub, which can lock the movement track of a heavy object, reduce the damage risk and reduce the carrying difficulty of the heavy object.

The invention specifically adopts the following technical scheme for realizing the purpose:

the utility model provides a heavy object handling device between aerogenerator cabin and wheel hub, includes wheel hub and kuppe, form the cavity between wheel hub and the kuppe, be provided with the guide rail from cabin window to wheel hub entry end in the cavity, the guide rail is fixed on the kuppe and is laminated with the kuppe with kuppe contact one side, be provided with along the gliding transport vechicle of guide rail on the guide rail.

Furthermore, the air guide sleeve is composed of 3 mutually-jointed cover walls, connecting plates extending towards the wheel hub are arranged on two sides of each cover wall, the connecting plates of the adjacent cover walls are jointed to form a connecting edge, a clamping groove is arranged on one side, close to the cover walls, of the guide rail, two side walls of each clamping groove are jointed with two sides of the connecting edge and fixedly connected with the connecting edge through bolts.

Furthermore, the guide rail comprises an upper bottom plate, a lower bottom plate and a supporting plate for connecting the upper bottom plate with the lower bottom plate, sliding grooves located on two sides of the supporting plate are formed among the upper bottom plate, the lower bottom plate and the supporting plate, the clamping groove is located on one side, close to the cover wall, of the lower bottom plate, wheels are arranged at the bottom of the transport vehicle and located in the sliding grooves and are in rolling connection with the sliding grooves.

Further, the rail height is <10 cm.

Furthermore, the transport vechicle is located the guide rail and is close to wheel hub one side, and the transport vechicle includes the loading board and is located the connecting axle of loading board both sides, the connecting axle includes segmental arc and the straight pole section that links to each other with the segmental arc, segmental arc tip and loading board fixed connection, straight pole section tip extends to the inslot that slides, the wheel rotates with straight pole section to be connected.

Furthermore, a chain is fixedly connected to the bearing plate, a first chain wheel and a second chain wheel which are meshed with the chain are respectively arranged at two ends of the guide rail, and a driving motor for driving the first chain wheel to rotate is arranged at one end of the guide rail.

Furthermore, be provided with the grip block on the wall of centre gripping groove both sides, the grip block offsets with being connected the arris, and forms 2 mounting grooves that are located respectively and connect the arris both sides between grip block and the centre gripping groove lateral wall, the chain stretches into the mounting groove in, is connected with the loading board after bypassing the second sprocket and finally gets back to first sprocket department and forms closed annular, be provided with at least one third sprocket with chain meshing and location chain in the mounting groove.

Furthermore, the sliding groove is provided with a sealing plate for sealing the sliding groove near one end of the hub inlet, the sealing plate is provided with a limit switch, the chain passes through one mounting groove, and a connecting wire of the limit switch passes through another mounting groove and extends out of the guide rail.

The invention has the following beneficial effects:

the heavy object carrying device between the wind driven generator cabin and the hub provided by the invention can lock the motion track of the heavy object in the cavity while facilitating the transportation of the heavy object, and avoids equipment damage, namely, when the device is used, the heavy object to be transported into the hub is fixed on the transport vehicle, then the transport vehicle is manually dragged or driven by other modes to move along the guide rail so as to transport the heavy object to the inlet of the hub, and the transport vehicle moves along the air guide cover and does not need to drag and slide on the surface of the hub, so that the difficulty and the safety risk of carrying the heavy object are effectively improved and reduced, and the equipment damage can be avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the pod outer configuration;

FIG. 2 is a schematic view of the internal structure of the pod;

FIG. 3 is an enlarged view of circle A in FIG. 2;

FIG. 4 is a cross-sectional structural view of the guide rail;

FIG. 5 is a schematic side view of the guide rail;

FIG. 6 is an enlarged view of circle B in FIG. 5;

FIG. 7 is an enlarged view of circle C of FIG. 5;

FIG. 8 is a schematic view of the end structure of the guide rail;

reference numerals: the device comprises a guide cover 1, a guide cover 2, a hub 3, a guide rail 4, a connecting plate 5, a cavity 6, a bearing plate 7, a wheel 8, a connecting shaft 9, an upper base plate 10, a lower base plate 11, a clamping groove 12, a sliding groove 13, a mounting groove 14, a first chain wheel 15, a chain 16, a second chain wheel 17, a sealing plate 17, a limit switch 18, a cover wall 19 and a support plate 20.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the product of the present invention is conventionally placed in use, and are used for convenience of description and simplification of description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "in communication" are to be interpreted broadly, e.g., as either fixed or removable communication, or integrally connected; either mechanically or electrically; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1-3, the present embodiment provides a device for transporting heavy objects between a nacelle and a hub of a wind turbine, including a hub 2 and a nacelle 1, as in the prior art, the nacelle 1 may be made of glass fiber reinforced plastic, the nacelle 1 is hollow, the hub 2 is located in the nacelle 1, so that a cavity 5 is formed between the hub 2 and the nacelle 1, the hub 2 may be a hollow structure made of cast iron, a pitch system and other related devices are installed in the hub 2, meanwhile, 3 mounting holes for installing blades are symmetrically formed in the hub 2, and a connection hole corresponding to the mounting hole is also started in the nacelle 1, wherein an end of the mounting hole generally protrudes out of the hub 2 to connect with the blades, so that three passages with a height slightly higher than that of a general portion are correspondingly formed in the cavity 5, during maintenance, a worker climbs into an inlet of the hub 2 located at a front end of the nacelle 1 from such a passage, then, the materials pass through the inlet of the hub 2 to enter the hub 2 for maintenance, and of course, tools and equipment required for maintenance also enter the materials by carrying or dragging the materials through a channel by a worker himself, the moving track of the people and the equipment is shown by a dotted arrow in fig. 1, the rightmost end of the people and the equipment is an inlet of a cabin, and the people and the equipment reach the inlet (a dotted oval position) of the hub 2 at the other end after passing through the cavity 5, namely, in fig. 1, the right side is a joint of the hub and a main shaft, the inlet from the cabin at the end to the hub 2 moves along the cavity 5 formed between the hub 2 and the air guide sleeve 1 and reaches the inlet of the hub at the opposite side of the main shaft, the height in the channel is actually not high, and the lowest position may not exceed 0.7m, so that the moving is very difficult. The difference between this embodiment and the prior art lies in that a guide rail 3 extending from the back of the hub 2 (near the cabin end) to the inlet end of the hub 2 is arranged in the cavity 5, the guide rail 3 is fixed on the air guide sleeve 1 and is attached to the air guide sleeve 1 at one side contacting with the air guide sleeve 1, the guide rail 3 is in an arc shape matched with the shape of the inner wall of the air guide sleeve 1 so as to reduce unnecessary occupation of space as much as possible, a transport vehicle sliding along the guide rail 3 is arranged on the guide rail 3, and the moving track of the transport vehicle is shown by a dotted arrow in fig. 1.

In the actual maintenance process, if the small-sized portable tool equipment is light, a worker can carry the small-sized portable tool equipment to enter the hub 2, but when the heavy equipment is carried, the small-sized portable tool equipment can be conveyed by the transport vehicle, namely, objects such as nylon ropes, ribbons and the like can be arranged on the transport vehicle to fix the equipment to be transported, and then the transport vehicle is driven by manpower to move or in other modes to transport the equipment, of course, the transport vehicle is in various forms, such as a single-wheel form and a multi-wheel form, as long as the equipment can be fixed and can move along the guide rail 3, the weight of the transport vehicle and the weight of the equipment can be borne by the guide rail 3, the transport vehicle and the guide rail 3 can be well connected, for example, a clamping groove and a sliding groove which extend along the length direction of the guide rail 3 can be formed in the guide rail 3, and transport wheels are arranged at the bottom of the transport vehicle, the transport wheel is arranged in the chute and rotates along the chute, a T-shaped block can be arranged at the bottom of the transport vehicle, correspondingly, the clamping groove is also arranged as a T-shaped groove, a ball can be arranged on the T-shaped block, so as to reduce the friction force generated in the moving process, the T-shaped block and the T-shaped groove are utilized to carry out auxiliary bearing on the transport vehicle, the conduction of the acting force is convenient, meanwhile, the opening at the end part of the guide rail 3 can be arranged, when the transport vehicle is installed, it can be inserted from the end, of course because the height of the cavity 5 is not high, in order to avoid affecting the transport of the equipment, it is preferable that the height of the guide rail is <5cm, so as to effectively reduce the space occupied by the guide rail and the transport vehicle, and simultaneously, the transport vehicle can also be arranged in a mode of loading plates 6 and wheels 7, namely, a piece of loading plate 6 with small thickness is used for fixing the equipment to be transported, and the wheels 7 are in rolling contact with the guide rails to drive the transport vehicle to move, so that the occupied space is further reduced.

The air guide sleeve 1 is composed of 3 sleeve walls 19 which are jointed with each other, connecting plates 4 which extend towards the hub 2 are arranged on two sides of each sleeve wall 19, the connecting plates 4 of the adjacent sleeve walls 19 are jointed to form connecting edges, and two adjacent connecting plates 4 are generally connected by bolts, as a specific embodiment of the guide rail 3, a clamping groove 11 is arranged on one side of the guide rail 3 close to the cover wall 19, the length direction of the clamping groove 11 is consistent with the length direction of the guide rail 3, two side walls of the clamping groove 11 are attached to two sides of the connecting edge and fixedly connected with the connecting edge, namely, holes corresponding to the connecting plates 4 are arranged on the side walls of the clamping grooves 11, the side walls of the clamping grooves 11 are directly fixed with the 2 connecting plates 4 through bolts, therefore, the guide rail 3 can be directly fixed without modifying the cover wall 19 of the air guide sleeve 1, the installation difficulty is reduced, and the damage to the fan structure can be avoided.

As a possible embodiment of the guide rail 3, please refer to fig. 4, the guide rail 3 includes an upper base plate 9, a lower base plate 10 and a support plate 20 connecting the upper base plate 9 and the lower base plate 10, a sliding groove 12 is formed between the upper base plate 9, the lower base plate 10 and the support plate 20 and located at two sides of the support plate 20, a clamping groove 11 is located at one side of the lower base plate 10 close to the cover wall 19, a wheel 7 is located in the sliding groove 12 and is in rolling connection with the sliding groove 12, the wheel 7 can better bear and limit the transport vehicle while driving the transport vehicle to move, and meanwhile, the section of the guide rail 3 is i-shaped, which can effectively improve the bending resistance of the guide rail 3, is convenient to process, and can effectively reduce the manufacturing cost of the guide rail 3.

Of course, the connection mode between the bearing plate 6 and the wheel 7 can be directly provided with a vertical plate extending to the opening on the side surface of the sliding groove 12, then a shaft is arranged to be connected with the vertical plate, and the wheel 7 is arranged on the shaft, and certainly, the shaft is rotatably connected with the wheel 7. Carry out following setting to this embodiment, the transport vechicle is located guide rail 3 and is close to 2 one sides of wheel hub, and the transport vechicle includes loading board 6 and is located the connecting axle 8 of 6 both sides of loading board, connecting axle 8 includes segmental arc and the straight pole section that links to each other with the segmental arc, segmental arc tip and 6 fixed connection of loading board, straight pole section tip extends to in the groove 12 that slides, wheel 7 rotates with straight pole section and is connected, segmental arc and straight pole section integrated into one piece promptly, rounding off, can effectively solve stress concentration's problem, promote bearing strength, thereby promote connecting axle 8's life.

In order to make the transportation vehicle move automatically and reduce the burden of workers, please refer to fig. 5-8, in this embodiment, a chain 15 is fixedly connected to the carrying plate 6, and two ends of the guide rail 3 are respectively provided with a first chain wheel 14 and a second chain wheel 16 engaged with the chain 15, which can be supported by the guide rail 3, i.e. the chain 15 is configured as a ring, two ends of the chain are respectively sleeved on the first chain wheel 14 and the second chain wheel 16, one end of the guide rail 3 is provided with a driving motor for driving the first chain wheel 14 to rotate, the driving motor can be a conventional motor such as a servo motor, a stepping motor, etc., as long as the motor can be controlled to rotate forward and backward as required, wherein the driving motor can be detachably connected with the first chain wheel 14/the second chain wheel 16, for example, a mounting shaft is arranged at the center of the first chain wheel 14/the second chain wheel 16, and a detachable structure such as a spline is arranged at the output shaft end of the driving motor for connection, when the equipment needs to be transported, the driving motor is brought into the air guide sleeve 1 and connected with the first chain wheel 14/the second chain wheel 16 for use, and the driving motor can be taken away for storage at ordinary times.

The chain 15 can pass through the two sides of the bearing plate 6 and is fixedly connected with only one side of the bearing plate 6 when being arranged, the arrangement mode is easy to hang on the chain 15 when in use, which is very inconvenient, for this reason, the clamping plates are arranged on the two side walls of the clamping groove 11 of the embodiment, the clamping plates are abutted against the connecting edges, 2 mounting grooves 13 which are respectively positioned at the two sides of the connecting edges are formed between the clamping plates and the side walls of the clamping groove 11, namely, the length direction of the clamping plates is parallel to the length direction of the guide rail 3, the chain 15 extends into the mounting grooves 13 from the first chain wheel 14, is connected with the bearing plate 6 after bypassing the second chain wheel 16 and finally returns to the first chain wheel 14 to form a closed ring shape, at least one third chain wheel which is meshed with the chain 15 and is used for positioning the chain 15 is arranged in the mounting grooves 13, the extending track of the chain 15 is matched with the radian of the guide rail 3 by the third chain wheel, namely, when in arrangement, chain 15 can be followed mounting groove 13, pass in the clearance of loading board 6 and upper plate 9, hide chain 15, can effectively drive the transport vechicle and remove, can prevent again that chain 15 from receiving to draw and hang, can play better guard action to chain 15, chain 15 of course also can set up 2 groups, pass in 2 mounting grooves 13 respectively, and 2 first sprocket 14/second sprocket 16 at both ends then can get up through a hub connection and carry out synchronous drive, certainly specifically set up several chains 15 then can select according to the transportation needs.

And in the in-service use in-process, in order to remove the ability in time to stop the motor to the entrance at the delivery wagon, promote intelligence, this embodiment is provided with the shrouding 17 that seals sliding groove 12 near 2 entry one ends of wheel hub at sliding groove 12, be provided with limit switch 18 on the shrouding 17, chain 15 passes a mounting groove 13, limit switch 18's connecting wire passes another mounting groove 13 and extends outside guide rail 3, so that walk line chain 15 and limit switch 18, when the transport wagon removes to 2 entry ends of wheel hub, can touch limit switch 18, make driving motor stop work, thereby no longer drive the transport wagon and remove, limit switch 18 can directly purchase from the market certainly, limit switch 18 also is conventional technology with driving motor's linkage, no longer describe repeatedly here.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims

1. The utility model provides a heavy object handling device between aerogenerator cabin and wheel hub, includes wheel hub (2) and kuppe (1), form cavity (5) between wheel hub (2) and kuppe (1), its characterized in that, be provided with in cavity (5) and extend to wheel hub (2) entry end guide rail (3) from wheel hub (2) back, guide rail (3) are fixed on kuppe (1) and are laminated with kuppe (1) contact one side, be provided with on guide rail (3) along the gliding transport vechicle of guide rail (3).

2. The device for carrying heavy objects between a nacelle and a hub of a wind turbine generator as claimed in claim 1, wherein the air guide sleeve (1) is composed of 3 mutually attached sleeve walls (19), both sides of each sleeve wall (19) are provided with connecting plates (4) extending towards the hub (2), the connecting plates (4) adjacent to the sleeve walls (19) are attached to form connecting ribs, one side of the guide rail (3) close to the sleeve wall (19) is provided with clamping grooves (11), and the connecting ribs are clamped into the clamping grooves (11) and are tightly connected with the clamping grooves (11).

3. The device for carrying heavy objects between the nacelle and the hub of the wind driven generator according to claim 2, wherein the guide rail (3) comprises an upper base plate (9), a lower base plate (10) and a support plate (20) connecting the upper base plate (9) and the lower base plate (10), sliding grooves (12) are formed between the upper base plate (9), the lower base plate (10) and the support plate (20) and located on two sides of the support plate (20), the clamping groove (11) is located on one side, close to the cover wall (19), of the lower base plate (10), wheels (7) are arranged at the bottom of the transport cart, and the wheels (7) are located in the sliding grooves (12) and are in rolling connection with the sliding grooves (12).

4. Device for handling loads between nacelle and hub of wind turbine according to claim 3, characterised in that said rails (3) have a height <10 cm.

5. The device for carrying heavy objects between the nacelle and the hub of the wind driven generator as claimed in claim 4, wherein the transportation vehicle is located on one side of the guide rail (3) close to the hub (2), and comprises a bearing plate (6) and a connection shaft (8) located on both sides of the bearing plate (6), the connection shaft (8) comprises an arc-shaped section and a straight rod section connected with the arc-shaped section, the end of the arc-shaped section is fixedly connected with the bearing plate (6), the end of the straight rod section extends into the sliding groove (12), and the wheel (7) is rotatably connected with the straight rod section.

6. The device for carrying heavy objects between the nacelle and the hub of the wind driven generator as claimed in claim 5, wherein a chain (15) is fixedly connected to the bearing plate (6), a first chain wheel (14) and a second chain wheel (16) engaged with the chain (15) are respectively arranged at two ends of the guide rail (3), and a driving motor for driving the first chain wheel (14) to rotate is arranged at one end of the guide rail (3).

7. The device for carrying heavy objects between the nacelle and the hub of the wind turbine as claimed in claim 6, wherein two side walls of the clamping groove (11) are provided with clamping plates, the clamping plates abut against the connecting edge, 2 mounting grooves (13) are formed between the clamping plates and the side walls of the clamping groove (11), the two mounting grooves are respectively located on two sides of the connecting edge, the chain (15) extends into the mounting groove (13) from the first chain wheel (14), bypasses the second chain wheel (16), is connected with the bearing plate (6), and finally returns to the first chain wheel (14) to form a closed ring shape, and at least one third chain wheel which is meshed with the chain (15) and is used for positioning the chain (15) is arranged in the mounting groove (13).

8. The device for carrying heavy objects between the nacelle and the hub of the wind driven generator as claimed in claim 7, wherein the sliding groove (12) is provided with a sealing plate (17) closing the sliding groove (12) near the inlet end of the hub (2), the sealing plate (17) is provided with a limit switch (18), the chain (15) passes through one mounting groove (13), and the connecting line of the limit switch (18) passes through the other mounting groove (13) and extends out of the guide rail (3).