• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Device for absorbing torque for wind turbine gearboxes, comprising a pair of torque arms (1), configured to be coupled on one side to a pair of respective projections (2) belonging to a gearbox (9), and on the other hand side to a fixed frame (6). Where each device comprises at least one pair of projections (4, 5), which externally embrace the respective projection (2); where a first damping element (7) is located between both projections (4, 5) and coming into contact both with the torque absorber (1), and with said projection (2) of the gearbox (9); and where a second damper (8) is located between both projections (4, 5) and coming into contact both with the torque absorber (1) and with the fixed frame (6), forming a damped joint between two entities . (Machine-translation by Google Translate, not legally binding)
    公开号:ES2613851A1
    申请号:ES201500844
    申请日:2015-11-26
    公开日:2017-05-26
    发明作者:David DIAZ BERRADE
    申请人:Gamesa Innovation and Technology SL；
    IPC主号:
    专利说明:

     5 TORQUE ABSORPTION DEVICE FOR AIRPLANE MULTIPLIER BOXES DESCRIPTION TECHNICAL FIELD OF THE INVENTION The present invention relates to a torque absorption device for boxes 10 wind turbine multipliers, which is located within the renewable energy sector of type wind power, as well as in the periodic maintenance and repair operations of said wind turbines. The main purpose of the invention is to absorb, to the greatest extent possible, the reaction torque generated in the multiplier box towards a wind turbine frame; so that there is a damped joint between the frame and said multiplier box capable of absorbing said reaction torque, and where the union presents a series of simple to install and replace entities, economically competitive, and perfectly adaptable to existing wind turbines 20 in the present. BACKGROUND OF THE INVENTION By way of introduction, the wind turbines used today have a multiplier box 25 of the speed of rotation of the output shaft, which is directly coupled to the rotor shaft of the wind turbine blades. As indicated, said multiplier box has as its main objective to increase the speed of rotation in its output shaft, reducing its torque; in this way, it is possible to reduce the size of the associated electric power generator, and consequently, to reduce its overall cost. 30 Said multiplier box is, in turn, coupled to a frame responsible for supporting the box itself and the rotor of the wind turbine; so that the torque reduced by the multiplier box is transmitted to the frame, and it reacts, due to Newton's third law, giving rise to a reaction torque (Mreacc) directly proportional to the input torque (Mentor) Y to the quotient between the speed of rotation on the output shaft and that ofentry (i). Where, mathematically, the reaction torque can be calculated as: i -1 Mreacc = Mentor '-i-In this context, the application of related physical entities and 5 configured to be able to absorb part of said pair is known of reaction, where such an application employs a pair of torque absorption devices coupled, on the one hand, to the multiplier box, and on the other to the support frame. Where said absorption devices have damping elements capable of absorbing part of said reaction torque, resulting in greater durability of the device multiplying the speed of rotation and, therefore, reducing maintenance or repair costs. See, for example, US patent application publication number US-2012/0056071; in which a pair of torque absorption devices associated with the housing of a multiplier box are described, which serve as an elastic link between said multiplier box and the associated fixed frame. Where in general, said torque absorption devices have the following physical entities: On the one hand, there are square brackets that are screwed to the housing of the multiplier box. On the other hand there are some bridges that are screwed to the frame; and between both 20 entities there are shock absorbers that absorb part of the torque generated in the multiplier box, and prevent said pair from passing to the bridges and, thus, to the corresponding frame. In this way, the main objective of reducing the transmission of the torque generated in the multiplier box to the frame is achieved; but it is necessary to emphasize that said torque absorption devices have a series of drawbacks, associated with: Firstly, the large number of elements necessary to achieve the absorption of the reaction torque generated by the multiplier box is highlighted; since it is necessary to have the squares and the bridges; and among them the damping elements 30 necessary to absorb the generated pairs; but in addition to these physical entities, the torque absorption devices have a series of spacers configured to predefine a working distance or height of the pair itself, on which the damping element works.Secondly, it is necessary to indicate that said torque absorption devices require frequent maintenance, since the dampers wear out or fissure, so that they have to be repaired or replaced as appropriate. But because the location of said damping elements is between each square and bridge, 5 and the distance being surrounded by part of said access, it can be understood that its handling is complex and laborious for a qualified operator, greatly lengthening replacement time due to the need to disassemble a large number of parts belonging to the torque absorption device itself, until the shock absorbers are replaced or repaired. 10 It is also noted that due to the different manufacturing tolerances in each participating part of each torque absorption device, which cause variations in the positioning and correct fixation of each torque absorption device with the multiplier box and the corresponding frame ; It is usual to use gauges designed to ensure the correct support and preload of the Device. Where again, the location of said gauges is made in the vicinity of the damping elements, being equally difficult to access for handling. That is why, in view of the existing drawbacks linked to the large number of elements that make up the current Torque Absorption Devices, as well as their difficulty of installation, maintenance and / or replacement, the appearance of a new Torque absorption device for wind turbine multiplier boxes capable of being installed in any type of wind turbine, which guarantees the absorption of the reaction torque generated in the multiplier box, damping its transmission towards the frame; which is also made up of a very small number of simple and inexpensive parts to manufacture; which also allows access to the damping and height modification elements in a fast and efficient way; and all this with a new torque absorption device, easy installation and maintenance, and economically competitive with respect to the state of the art known to date. DESCRIPTION OF THE INVENTION The present invention relates to a torque absorption device for wind turbine multiplier boxes, comprising a pair of torque absorption devices configured to be coupled on one side to a pair of respective protrusions belonging to a box multiplier, and on the other hand to a fixed frame, sothat: - each torque absorption device comprises at least one pair of projections that externally embrace the respective projection; -where a first damping element is located between both projections and 5 coming into contact with both the torque absorption device, and with said projection of the multiplier box, configuring a damped joint between each projection and the corresponding torque absorption device through said first shock absorber; and -where a second shock absorber is located between both projections and coming into contact with both the torque absorption device and the fixed frame, 10 forming a damped joint between each projection and the fixed frame through said second shock absorber. . It is observed, therefore, that the union between the multiplier box and the frame is made thanks to the fact that each torque absorption device is formed by a single entity, which has a pair of projections that embrace one of the projections of the multiplier box, and where each pair of projections have a first and second damping element that are constituted as a physical and cushioned union between the multiplier box and the fixed frame, in order to guarantee the absorption of torque generated by the multiplier box. It is observed that the position of the damping elements is strategically chosen, since they are located between both projections to obtain a symmetrical configuration device, so that a first damping occurs between the device and the projection of the multiplier box through the first damping element, and a second damping between the projection and the fixed frame through the second damping element. 25 Thus, when vibratory oscillations occur in the multiplier box, they are transmitted to each projection of said box; they pass through each torque absorption device and that is where the first and second damping elements are responsible for absorbing said oscillations through the transformation of motion energy into elastic deformation energy. Compared to the state of the known art, it is observed that there is a substantial simplification of the entities that make up the torque absorption device, since although previously said device has three main entities: 35 brackets, bridges and damping elements. In the torque absorption device formultiplier boxes object of the invention, the main entities are reduced to the torque absorption device itself formed by a single piece with the pair of projections, and the first and second damping elements; which are also perfectly accessible by a qualified operator, since they are located between both projections, leaving it visible for inspections and repairs on site. Likewise, and in order to replace or replace it, only the torque absorption device with respect to each projection of the multiplier box must be decoupled; being a simple task and that requires a minimum time of operation. It is necessary to clarify the terms "first" and "second" shock absorbers, since such nomenclature does not imply the need for the use of a "third" shock absorber, and is only described in that way with the idea of clarifying the optional entities to be incorporated into said basic and essential entities that form the torque absorption device object of the invention. In a preferred embodiment, it is described how the device has an e-shaped geometry, where the wings correspond to the pair of projections; and the soul corresponds to the central part. In this way, its manipulation and installation on each projection of the multiplier box is carried out quickly and efficiently; since the operator 20 only has to position the damping elements, and couple from one side or superiorly each torque absorption device. In this sense, and in relation to how to proceed with the guidance and centering of the torque absorption device with respect to the projection of the multiplier box, this can be carried out thanks to the fact that the second shock absorber comprises at least one centering pin between said second shock absorber and fixed frame ,. On the other hand, the coupling of the torque absorption device on the corresponding frame is carried out through the physical connection between the device itself and said frame; There are multiple options for carrying out said second connection, such as through fixing screws to be screwed into holes 30 made on said fixed frame. So that these screws pass through the pair of projections, and thread on the frame in order to guarantee the mechanical connection between the two elements. Recalling that, in order to increase the absorption capacity of the entire set of entities, the existence of the second buffer element described is described.It is coupled to the projection of the multiplier box, and in contact with both the fixed frame, and said projection of the multiplier box, forming a damped joint between the fixed frame and the corresponding torque absorption device. Giving rise to a sandwich type configuration, in which the projection is trapped between the first and the second buffer element, which is usually made of an elastomeric plastic material. Thus doubling the contact area between the projection and the damping elements and, therefore, increasing the damping response and torque absorption of the entire device. 10 It is necessary to emphasize that, as in the state of the known art, there are errors of dimensional and geometric tolerances of the main entities that make up the torque absorption device, and where these errors are necessary to correct during assembly and commissioning service of said device. For this, the preferred option is described in which the device comprises a plurality of gauges that can be coupled between: The first damping element and the device itself; and / or the second damping element and the fixed frame. In this way, the gauges themselves take advantage of the arrangement of the shock absorbers to be able to engage between the possible free spaces that remain between them and the attached rigid surfaces: the base of the device and the fixed frame. Being again accessible from the outside for viewing by a qualified operator. And greatly simplifying maintenance and repair tasks compared to the state of the art indicated above. Finally, and as an alternative embodiment, the option is described in which each torque absorber device has an E-shaped geometry, where the first projection corresponds to a central projection configured to be housed in a through opening of each outgoing; and where the outer projections are configured to behave as second projections, both being coupled to the fixed frame, and where both second projections externally embrace, on both sides, the respective projection of the multiplier box. It is observed, in view of the alternative embodiment, that the union between the multiplier box and the frame is made thanks to the fact that each torque absorption device is formed bya single entity, which has a first projection that is introduced through the through opening of each projection of the multiplier box; and it also has a second projection that hugs the respective projection of the multiplier box, being coupled to the frame itself, giving rise to a physical union from the multiplier box to said frame that requires a damping element to guarantee the absorption of torque generated by The multiplier box. That is why the existence of a first damping element positioned in a strategic location with respect to the first projection is also described, since said first damping element is externally coupled with respect to said first projection, and has a permanent contact with the base of the first 10 highlight (where the first highlight is born) and with the projection of the multiplier box. In this way, it is visualized how when installing said integrated torque absorption device on the multiplier box, it is only necessary to position each E-shaped torque absorption device on the projection of said box, of so that the central projection of the geometry of E is introduced through the through hole of said projection, and the two ends of the geometry of E remain on the flanks of said projection. Likewise, the first and second damping elements are surrounded by the free surface not embedded by the projection of the multiplier box, guaranteeing the flexible connection between the multiplier box itself and the associated torque absorption device. And then, in order to proceed to the physical connection between the torque absorbing device and the frame, it is described that both end projections of the E have the said fixing means to said frame, being accessible from the top of the geometry of E, on the opposite side referred to the birth of each of the protrusions. Thus, and in view of the preferred embodiment with e-shaped geometry, with the proposed invention a torque absorption device for wind turbine multiplier boxes capable of absorbing the reaction torque generated in the multiplier box towards the wind turbine frame; so that there is always a cushioned joint between the frame and said multiplier box that guarantees said absorption, and 30 thanks to a series of elements of simple configuration, very versatile for commissioning in the different multiplier boxes of current wind turbines, and that greatly facilitate the maintenance, repair and / or replacement of said damping device compared to the current state of the art and associated with said damping solutions of the torque generated in wind turbine multiplier boxes. 35DESCRIPTION OF THE DRAWINGS To complement the description that is being made, and in order to help a better understanding of the features of the invention, according to a preferred example 5 of practical realization thereof, it is accompanied as an integral part of said description, a series of drawings where, for illustrative and non-limiting purposes, the following has been represented: Figure 1.- Shows a three-dimensional view of a torque absorbing device 10 belonging to the current state of the art, visualizing the squares, the bridges , damping elements and associated spacers. Figure 2.- Shows a pair of two-dimensional views of the torque absorption device shown in Figure 1, and also belonging to the state of the art. Figure 3.- Shows a first three-dimensional view of the torque absorption device for multiplier boxes object of the invention, which is coupled to a projection of the multiplier box itself. 20 Figure 4.- Shows a two-dimensional view of the torque absorption device to be coupled in the multiplier box, displaying the connecting elements and centering pins with respect to the frame itself to be coupled. Figure 5 shows a two-dimensional view of the coupled torque absorption device 25 in the multiplier box through its corresponding projection. PREFERRED EMBODIMENT OF THE INVENTION In view of Figures 1 and 2, which correspond to torque absorption devices currently employed and, therefore, belonging to the state of the art, it can be seen how said torque absorption devices they present: A square (13 ') that is screwed, through a plurality of screws (14'), to the housing of a multiplier box. A bridge (1 ') that is screwed to the frame through a series of respective 35 screws (11'), and between both entities there are shock absorbers (7 ', 8') that absorbpart of the torque generated in the multiplier box, and prevent said pair from passing to the bridges (1 ') and, thus, to the corresponding frame. Likewise, the location of a series of front spacers (12 ') 5 responsible for setting a predetermined height of the square (13') with respect to the bridge (1 ') is displayed. But said front spacers (12 ') are not the only pieces responsible for fixing said height, but as can be seen in Figure 2, there are internal spacers (15') whose mission within the Torque Damping Device is the same. 10 To achieve the flexible connection between the multiplier box and the corresponding frame, the position of the dampers (7 ', 8') inside the bridge (1 ') is observed in figure 2, and composed of two pairs of dampers, formed each by an upper shock absorber (1 ') and a lower shock absorber (8'), distributing the load generated by the torque of the multiplier box on the contact surfaces of the shock absorbers (7 '. 8'). 15 Likewise, the existence of gauges (15 ') in correspondence with the lower dampers (8'), and centering pins (12 ') with respect to the corresponding frame is displayed. 20 In this way, you can see in a clearer and more visual way the problem related to the large number of parts used to obtain the aforementioned Damping Device, as well as the extreme difficulty that a qualified operator can access to the dampers (1 ', 8'), and the gauges (12 ') to check their status during routine maintenance operations. 25 To solve this problem, it can be seen in Figures 3 to 5 how the torque absorption device for wind turbine multiplier boxes object of the invention comprises: -In relation to the multiplier box (9), a projection (2) is displayed. ) belonging to the multiplier box 30 (9) ,. -In relation to said torque absorption device (1), it is configured to be coupled on one side to a pair of respective projections (2) belonging to a multiplier box (9), and on the other hand to a fixed frame (6 ). 35 Likewise, it is visualized how each torque absorption device (1) presents aC-shaped geometry, formed by two projections (4, 5) that surround the projection (2) giving rise to an external embrace with respect to the respective projection (2) of the multiplier box (9). 5 The coupling of the torque absorption device (1) with respect to the fixed frame (6) is carried out thanks to a series of fixing screws (11) to be screwed in drills made on said fixed frame (6); wherein said fixing screws (11) pass through the second projections (4, 5) of the torque absorbing device (1). 10 and to ensure the damped joint, each torque absorption device (1) has a first damping element (7) that is located between both projections (4, 5) and coming into contact with both the torque absorption device ( 1), as with said projection (2) of the multiplier box (9), configuring a damped joint between each projection (2) and the corresponding torque absorption device (1) through said first shock absorber (7). Likewise, there is a second damping element (8) that is located between both projections (4, 5) and coming into contact with both the torque absorption device (1) and the fixed frame (6), configuring a joint cushioned between each projection (2) and the fixed frame (6) through said second shock absorber (8). 20 In order to correct geometric errors of the parts involved, the figures show the existence of a plurality of gauges (10) to be coupled between the second damping element (8) and the fixed frame (6); and between the first damping element (7) and the base of the central part (3) of the C-shaped device; being easily accessible and visible from the outside. Finally, and in view of Figure 4, it can be seen how the second shock absorber (8) comprises a pair of centering pins (12) between said second shock absorber (8) and the fixed frame (6); which serve as positioners of the device object of the invention. In view of this description and set of figures, the person skilled in the art will be able to understand that the embodiments of the invention that have been described can be combined in multiple ways within the scope of the invention. The invention has been described according to some preferred embodiments thereof, but it will be apparent to the person skilled in the art that multiple variations can be introduced into said preferred embodiments withoutexceed the object of the claimed invention. 
    权利要求:
    Claims (1)
    [1]
    CLAIMS 1.- Torque absorption device for wind turbine multiplier boxes, comprising a pair of torque absorption devices (1), configured to couple 5 on one side to a pair of respective projections (2) belonging to a multiplier box (9), and on the other hand to a fixed frame (6), the device being characterized in that: - each torque absorption device (1) comprises at least one pair of projections (4, 5), which externally embrace the respective projection (2); 10 -where a first damping element (7) is located between both projections (4, 5) and coming into contact with both the torque absorption device (1), and with said projection (2) of the multiplier box (9 ), configuring a damped connection between each projection (2) and the corresponding torque absorption device (1) through said first damper (7); and 15 -where a second damper (8) is located between both projections (4, 5) and coming into contact with both the torque absorption device (1) and the fixed frame (6), configuring a damped joint between each projection (2) and the fixed frame (6) through said second damper (8). 2.-Torque absorption device, according to claim 1, characterized in that it has an e-shaped geometry, where the wings correspond to the pair of projections (4, 5); And the soul corresponds to the central part (3). 3. Torque absorption device, according to claim 2, characterized in that the second damper (8) comprises at least one centering pin (12) between said second damper (8) and the fixed frame (6). 4.-Torque absorption device, according to any of the preceding claims, characterized in that it comprises a plurality of gauges (10) to be coupled between the second damping element (8) and the fixed frame (6). 5.-Torque absorption device, according to any of the preceding claims, characterized in that it comprises a plurality of gauges (10) to be coupled between the first damping element (7) and the device itself.5.-Torque absorption device, according to any of the previous claims, characterized in that the coupling of the pair of projections (4, 5) with respect to the fixed frame (6) is carried out through fixing screws (11 ) to be screwed into holes made on said fixed frame (6). 7.-Torque absorption device, according to any of the preceding claims, characterized in that each torque absorption device (1) has an E-shaped geometry, where the first projection (3) corresponds to a configured central projection to be housed in a through opening (2a) of each projection (2); and where the outer projections 10 are configured to behave as second projections (4, 5), both being coupled to the fixed frame (6), and where both second projections (4, 5) externally hug, on both sides, the respective projection ( 2) of the multiplier box (9).
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    优先权:
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    ES201500844A|ES2613851B1|2015-11-26|2015-11-26|Torque absorption device for wind turbine gearboxes|ES201500844A| ES2613851B1|2015-11-26|2015-11-26|Torque absorption device for wind turbine gearboxes|
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