• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    Anti-vibration cap (1) for wind installations or the like, composed of metal layers and with intermediate spaces of elastomeric material and the metal layers and layers of elastomeric material are in cross section circle arcs; and that in the insertable arch pack (4) there is at least one pair of mixed metal arches exterior (10) and interior (11), each having respectively a cylindrical external face (10a and 11a) and a frustoconical internal face (10b) and 11b), with a wedged longitudinal section (10c and 11c) with inclinations of opposite and additional longitudinal direction, and existing interposed between the mixed metal arches exterior (10) and interior (11), frustoconical elastomeric arches (5); susceptible each insertable arch box (4) of the antivibration bushing (1) possessing, in its radial stacking, an initial axial deviation (8) corresponding to an initial thickness (6) and an axial alignment of operation (9) with a thickness of operation (7) greater, when compressed axially in the assembly, between an axially displaceable element (13) and an axially fixed element (15). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2689248A1
    申请号:ES201730669
    申请日:2017-05-08
    公开日:2018-11-12
    发明作者:Ignacio Lopetegui Galarraga；Jon IRAZUSTABARRENA MURGUIONDO
    申请人:Maiztarkoetxea S L；MAIZTARKOETXEA SL；
    IPC主号:
    专利说明:

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    Anti-vibration bush for wind or similar installations.
    FIELD OF THE INVENTION
    This invention concerns an anti-vibration bushing for support shafts of employees in wind or similar installations.
    STATE OF THE PREVIOUS TECHNIQUE
    At present and as a reference to the state of the art, there are different types of anti-vibration bushings in the market for different sectors, their most common use in the automobile sector focusing on the use of this invention in anti-vibration bushings of wind installations.
    In this type of wind installations, since they are bulky facilities with difficult access, the manipulation of the anti-vibration bushings is complicated, in addition to being necessary a force for the radial precompression of these of the order of two hundred tons (200 tons) or even greater in some cases, different solutions being known to avoid said problem, with bushes divided into two sectors and of different configurations.
    From German Patent No. OS 1955308, anti-vibration bushings consisting of concentric cylindrical bushings and an inner cylinder are known, coated with elastomeric material used in the automobile sector that can be used in lighter vehicles with a bend angle of the extremely large front wheels for use as elastic elements or as articulated bushings.
    An example of anti-vibration bushings used in wind farms is European Patent Publication Number EP 2231068 that protects the use of anti-vibration bushings that can be radially deformed, composed of a lower and upper cylindrical half, which arranged one above the other form a complete cylindrical bushing with intermediate layers of elastomeric material, and with the outer sub-bushing eccentrically to allow radial deformation prior to the operating position. This configuration has the disadvantage that a force of the order of two hundred tons (200 Tn) or even greater in some cases is necessary for the radial precompression of the anti-vibration bushings, making it necessary to mount an external tool such as a hydraulic lift or similar, which complicates the assembly and disassembly of this type of elements located at high heights and difficult to access, causing problems in its installation and needing additional tools to facilitate such maneuver. This causes an increase in tension in the upper and lower sections of each half of the complete bushing, thus weakening the properties of each layer and consequently the resistance of the anti-vibration bushing itself. In addition, it causes an increase in costs due to the use of additional tools.
    Another example is European Patent Publication Number EP 2516883 that protects anti-vibration bushings of employees in wind installations consisting of an upper half and a lower half and forming together an oval or ellipse shaped configuration, with its horizontal dimension smaller than the vertical dimension, this invention being an alternative to European Patent Publication Number EP 2231068 for small spaces. In addition, each upper and lower sector is eccentric in relation to the axis both in the prestressed state and in the tensioned state. Likewise, it is necessary to use a precompression tooling which complicates the assembly and disassembly of the anti-vibration bushing and thus increasing the
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    tension in the upper and lower middle sections and making its operation less effective as an antivibration.
    It is already known that the elastomeric element to move from its initial position to its operating position, requires an application of force in the assembly that can be of the order of two hundred tons (200 Tn) in radial direction and that in the examples The aforementioned needs the use of external tools for the insertion of the anti-vibration bushings in the support axis.
    Therefore, what is intended to be achieved with the present invention is to avoid the need for external tools and thus facilitate their assembly and disassembly, as well as an adaptability to any type of wind installation.
    EXPLANATION OF THE INVENTION AND ADVANTAGES
    According to the invention, we obtain a bushing with ample possibilities for wind turbines; that can produce up to eight megawatts (8 MW) of electricity per hour in the case of off-shore turbines, being the most usual power today of the order of three megawatts (3 MW). And in addition to the exponential progress that occurs in this technical sector, it is expected that future increases will be considerable, which further enhances the specific design possibilities for each case using the object of our invention. Being the current machines of tower heights that can range from ninety meters (90 m) to one hundred fifty meters (150 m) in the case of the largest turbines. And with a diameter of the rotor of the blades that can reach one hundred thirty-six meters (136 m).
    Against the state of the art, the essential object of this invention is an anti-vibration bushing for support shafts in wind or similar installations, of the anti-vibration bushes used to interpose between a support shaft and a support support anchoring shaft, composed usually in turn by a support half cylinder and another clamping half cylinder; anti-vibration bushing composed of arc-shaped packages of metal layers and with intermediate spaces filled with layers of elastomeric material, of the same longitudinal dimension and in which the metal layers and the layers of elastomeric material are cross-sectioned circle arcs, generating metal arcs and elastomeric arches, and that in the insertable arc-shaped package there is at least one pair of mixed outer and inner metal arches, each having respectively a cylindrical outer face and a truncated conical inner face, with a longitudinal section wedged with inclinations of opposite longitudinal direction and supplementary, and existing interposed between the outer and inner mixed metal arches, truncated conical elastomeric arches; each insertable arcuate package of the anti-vibration bushing is capable of having, in its radial stacking, an initial axial deviation corresponding to an initial thickness and an axial alignment of operation with a greater operating thickness, when compressed axially in the assembly, between an axially element movable and an axially fixed element.
    It is noteworthy that the characteristic of the invention is to allow the installation of the insertable arcuate packages in the axial direction and without the need to disassemble the anchor support. Accordingly, the present invention even allows the realization of the anchoring bracket in single-piece execution (without the usual arrangement of support half-cylinder and clamping half-cylinder), in this way the manufacturing costs of the anchor support are reduced.
    In this way, an anti-vibration bushing is formed with the outer and inner arches concentric with the support shaft, it is not necessary to disassemble the clamping half cylinder of the
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    anchor bracket for assembly or disassembly. The insertable arch-shaped package has an initial thickness before assembly that allows it to be inserted into the anchor support without difficulty. Thanks to the configuration of the coined longitudinal section of the mixed metal arches, in their axial alignment position, the operating thickness is greater than the initial thickness, which translates into a pre-compression of the anti-vibration bushing necessary for its correct operation without the need for using additional tools, just by pressing the axially movable element by means of a compression screw is sufficient. Carrying the insertable arcuate package from its initial deviation to its axial alignment and placing it between said axially movable element and a fixed axial element. On the contrary, in previous solutions, in order to achieve this precompression it is necessary to use additional tools such as a hydraulic lift or similar and even the disassembly of the anchor support and the support axis itself is required.
    In wind installations, the slow axis usually rotates at low revolutions ranging between fifteen and twenty-five revolutions per minute (15-25 rpm), which in case of emergency braking or in more unfavorable situations, produce pairs in the power train which have to be absorbed by the caps objects of our invention. Taking into account that the distance between arms of the larger modern multipliers can exceed two meters, the forces that reach the supports can be in extreme cases of up to three hundred tons (300 Tn). In addition to this extreme force, they must support the weight of the multiplier itself, which in larger machines exceeds fifteen tons (15 tons).
    Consequently, the anti-vibration bushings need a radial precompression that can withstand the mentioned efforts. In the case of our invention to achieve this radial precompression, the axial force to be exerted to introduce the anti-vibration bushing is of the order of between ten and fifteen tons (10-15 Tn), which can only be exerted through the compression screw of the axially displaceable element, the axial forces being much smaller than the radial forces typical of other embodiments that need additional tooling.
    Another advantage is that the mixed metal arcs being concentric with the support axis, allow the precompression of the truncated elastomeric arcs to be homogeneous throughout the section without increasing the tension at certain points, as in other embodiments in which the metal arcs they are eccentric generating tensions in the elastomer and can make their operation less effective. In this way, a simpler assembly and disassembly is achieved by avoiding high tensions and without the need for additional tools, which makes the invention more reliable and durable and less expensive.
    Another feature of the invention is the possible existence in each insertable arc-pack of at least one truncated conical metal arc of similar inclination to the internal frustoconical faces and flanked on both sides with truncated conical elastomeric arches, and located between the mixed exterior and interior metal arches. This configuration facilitates the insertion of the anti-vibration bushing in the anchoring support, generating a radial thrust that in turn generates the necessary compression for its correct operation, and with the possibility of introducing as many metal truncated conical arches according to the desired stiffness.
    Another feature of the invention is that the anti-vibration bushing is constituted by a group of two insertable arcuate packages with arcs close to 180 ° each.
    Thanks to this configuration, greater ease of assembly and handling is achieved. When treating the field of the invention of an anti-vibration bushing designed for wind installations
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    which exist in different sizes, the anti-vibration bushing of this invention, according to the use of the same, can be adapted to any installation and if possible its variation in the number of layers formed by each insertable arcuate package, vary its length and make longitudinal groupings, As well as varying the shape of the axially movable element and the axially fixed element, we can therefore carry out a specific execution for the specific needs of each installation.
    Likewise, a greater manufacturing facility is also obtained when for the same execution that requires specific technical characteristics, we can carry it out in several insertable arc packages that are then grouped in the assembly, which facilitates both the molding of the same and the execution of tests and especially the maneuver of the assembly in situ, by the consequent advantageous conditions of size and weight.
    The replacement is also much simpler, being able to make partial spare parts without the need to disassemble the insertable arcuate packages or remove the support shaft, which results in considerable savings in maintenance costs and, especially, in the times that interruption, because while we are doing this operation the installation is stopped.
    Preferably, the anti-vibration bushing is constituted by an axial meeting of at least two groups of insertable arcuate packages. Thanks to this feature, a simpler assembly is possible with the use of several less heavy insert arc packages.
    Another feature of the invention is that preferably the outer and inner mixed metal arches of the axial clusters of the groups of insertable arc packages have opposite inclinations. This configuration allows the forces generated by the configuration of the minted longitudinal section of the mixed metal arches to be balanced, also contributing to compensate for the possible axial forces generated in the support axis.
    Another alternative of the invention is that the mixed outer and inner metal arches of the axial junction of the insertable arcuate packages have equal inclinations. Therefore, depending on the characteristics of the forces to be damped, one or another embodiment will be chosen.
    In another embodiment of the invention it is provided that the anti-vibration bushing is constituted by a group of three or more insertable arch-shaped packages with arcs that in their sum approximate the complete circle. In this way the tests of the pieces are facilitated, the manufacturing costs are lower and the forces are distributed more evenly at the time of compression.
    Another peculiarity of the invention is that it is provided that in the insertable arc-pack there are accessible means that favor its removal, provided that this is a threaded hole. Thanks to this configuration, at the time of disassembly, if, when removing the axially movable element, the groups of insertable arch-shaped packages do not easily come out by themselves, this solution facilitates the exit for their disassembly.
    In another embodiment of the invention it is envisioned that there are insertable arcuate packages with mixed exterior and interior metal arches and truncated conical metal arcs with opposite direction inclinations, there being in the intermediate layers a metal bow with two inclined faces.
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    Finally, it should be mentioned that preferably the angle of minting is of the order of between two and fifteen degrees, achieving a large radial load capacity of up to three hundred tons (300 tons) with a very low axial pre-compression of between ten and fifteen tons (10 -15 tons). In accordance with the invention, this axial effort is perfectly compensable with the simple use of a screw, for example in accordance with the ISO standards of screws, an M36 metric screw, in quality 8.8 can be screwed up to a pair of one thousand eight hundred and fifty and five Newtons per meter (1855 Nm) generating a tensile force in the screw of forty tons (40 Tn). Therefore, we can tighten an M36 metric screw to produce a force of forty tons (40 tons). Predictably, we will not need more than fifteen tons (15 Tn) of axial force, so an M36 metric screw will suffice to be able to make the necessary pre-compression force.
    In designs with lower coining angle, the necessary precompression force is reduced, both parameters being related, which allows the angle to be designed according to the need for radial preload and axial pre-compression force of each installation.
    DRAWINGS AND REFERENCES
    To better understand the nature of the invention, the attached drawings show an industrial embodiment that is merely illustrative and not limiting in nature.
    Figure 1 represents in the lower right part an isometric view with a middle section showing the anti-vibration bushing (1) mounted on the support shaft (2) in its operating position.
    The division of the anchor support (3) usually constituted by the support half cylinder (3a) and the clamping half cylinder (3b) has been shown with a thicker line.
    In the lower left part of figure 1 an exploded view of the anti-vibration bushing (1) is shown in which the mounting form on the support shaft (2) and the anchor support (3) of the anti-vibration bushing (1) is observed. ) when a force is applied in the axial compression direction (17) on the axially movable element (13) by means of the compression screw (14).
    For a better visualization of the insertable arch-shaped package (4), a detailed view has been made in which the mixed metal arches (10 and 11) are distinguished, shaded in black, the truncated conical elastomeric arches (5) and the metallic arches conical trunks (12) that form the insertable arch-shaped package (4).
    The upper left part of Figure 1 represents a cross-section of the insertable arcuate package (4) in the initial precompression, that is, without applying an axial external force, in which the initial axial deviation (8) is observed bounded. The upper right part of figure 1 represents a cross section of the insertable arc-pack (4) in the operating compression situation, that is, once the axial force is applied by means of the compression screw (14), in which it is observed the axial alignment of operation (9) marked with a thicker line. For a better visualization, the lines of the staggering and alignment of the insertable arcuate package (4) have been marked with a thicker stroke.
    Figure 1A shows an isometric view of the insertable arcuate package (4), in which in an enlarged detailed view the initial axial deviation (8) is observed.
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    Figure 1B shows an isometric view of the group of insertable arcuate packages (4) forming a complete anti-vibration bushing (1).
    Figure 2 represents an exploded view of the anti-vibration bushing (1) in which a preferred embodiment is observed with two groups of insertable arcuate packages (4) at each end of the support shaft (2) and in its position prior to compression of functioning.
    Figure 3 represents a cross section of the preferred embodiment of the anti-vibration bushing (1) of Figure 2 mounted on the support shaft (2) in its uncompressed position.
    Figure 4 represents a cross section of the anti-vibration bushing (1) mounted on the support shaft (2) in its compressed operating position.
    Figures 5, 6, 7 and 8 represent different embodiments of the anti-vibration bushing (1).
    Figure 9 shows a cross section of the anti-vibration bushing (1) in which the threaded hole (16) is shown for the extraction of the anti-vibration bushing (1) by means of an extraction threaded tool (18).
    Figures 10A and 10B are other embodiments for the anti-vibration bushing (1).
    Figure 11 depicts the simplest execution of the insertable arc-shaped package (4) in which a section of the insertable arc-shaped package (4) shown only by mixed metal arcs (10 and 11) and a frustoconical elastomeric arch (5) is shown.
    An isometric view is shown in figure 12 with a mid-section showing the anti-vibration bushing (1) mounted on the support shaft (2) in its operating position and inserted into the monobloc anchor bracket (3) (without the arrangement usual of semi-cylinder of support (3a) and semi-cylinder of tightening (3b)).
    The following references are indicated in these figures:
    1. - Anti-vibration bush
    2. - Support shaft
    3. - Anchor support
    3a.- Support half cylinder
    3b.- Clamping half cylinder
    4. - Inserted arcuate package
    5. - Trunk conical elastomeric arch
    6. - Initial thickness of the insertable arcuate package (4)
    7. - Functional thickness of the insertable arcuate package (4)
    8. - Initial axial deviation
    9. - Operational axial alignment
    10. - Exterior mixed metal arch
    10a.- Cylindrical outer face
    10b.- Internal truncated conical face 10c.- Coined longitudinal section
    11. - Mixed inner metal arch
    11a.- External cylindrical face 5 11b.- Internal truncated conical face
    11c.- Coined longitudinal section
    12. - Trunk conical metal arch
    13. - Axially movable element
    14. - Compression screw
    10 15.- Axially fixed element
    16. - Threaded hole
    17. - Axial compression direction
    18. - Useful extraction thread
    19. - Metallic bow with two inclined faces
    15 20.- Coining angle
    EXHIBITION OF A PREFERRED EMBODIMENT
    With regard to the drawings and references listed above, a preferred embodiment of the object of the invention is illustrated in the attached drawings which concerns an anti-vibration bushing (1) for support shafts (2) in wind or similar installations, of the 20 anti-vibration bushes used to interpose between a support shaft (2) and an anchor support (3) of the support shaft (2), usually in turn composed of a support half cylinder (3a) and another clamping half cylinder ( 3b); anti-vibration bushing (1) composed of arc-shaped packages of metal layers and with intermediate spaces filled with layers of elastomeric material, of the same longitudinal dimension and in which the metal layers and the layers of elastomeric material are cross-sectioned circle arcs , generating metal arcs and elastomeric arcs, and that in the insertable arc-shaped package (4) there is at least one pair of mixed outer (10) and inner (11) metal arches, each having respectively a cylindrical outer face (10a and 11a ) and an internal truncated conical face (10b and 11b), with a coined longitudinal section (10c and 11c) with inclinations of opposite longitudinal direction and 30 supplementary, and existing interposed between the mixed metal arches exterior (10) and interior (11), truncated conical elastomeric arches (5); each insertable arcuate package (4) of the anti-vibration bushing (1) is capable of having, in its radial stack, an initial axial deviation (8) corresponding to an initial thickness (6) and an axial operating alignment (9) with a thickness of greater operation (7), when compressed axially in the assembly, between an axially movable element (13) and an axially fixed element (15).
    In figure 1 we can see the anti-vibration bushing (1) in an exploded view, where said anti-vibration bushing (1) is observed before its assembly on the support shaft (2), which will be the one that supports the vibrations that come from the wind installation. To cushion those
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    vibrations, the anti-vibration bushing (1) is inserted between the anchor support (3) and the support shaft (2) forming a complete bushing from a group of insertable arcuate packages (4). Given the large dimensions of this type of installation and the height at which they are located, and the need to apply a force for radial precompression of these of the order of two hundred tons (200 tons) or even greater in some cases, the assembly is complicated and in previous embodiments it is necessary to use heavy tooling for assembly. In this case, thanks to the configuration of the minted longitudinal section (10c and 11c), said heavy tooling is not required for its assembly, its installation being much easier only by pressing the axially movable element (13), in this way , the wedging angle (20) (indicated in Figure 1) will be of the order of between two and fifteen degrees, this being the angle formed between the internal truncated conical face (10b, 11b) and the cylindrical outer face (10a, 11a) of mixed metal arches (10 and 11). Achieving a large radial load capacity of up to three hundred tons (300 Tn) with a very low axial pre-compression of between ten and fifteen tons (10-15 Tn) perfectly compensable with the simple use of a compression screw (14).
    Thus, in the initial position (figure 3), the insertable arch-shaped packages (4) have an initial thickness (6), while in the operating compression position (figure 4), the insertable arch-shaped packages (4) pass to have an operating thickness (7). This is due to the fact that the anti-vibration bushing (1) will be made by injection molding by introducing the elastomeric material into the intermediate spaces forming pieces in a radial stacking position with an initial axial deviation (8), as shown in the detail above. left of figure 1 and in figure 1A.
    Thus, firstly, the insertable arch-shaped packages (4) are inserted in the anchoring support (3) and the axially movable element (13) presses on the inner mixed metal arch (11) which would be the one that stands out the most, leaving the insertable arch-shaped package ( 4) between the axially movable element (13) and an axially fixed element (15). Which is possible with a simple embodiment of the type shown in Figure 11. It should be mentioned that the axially movable element (13) can be the containment cover itself of this type of installations, or adopt a flange-shaped configuration (Figure 5 ) or any other type of provision that applies; and in turn the axially fixed element (15) can be from a step provided on the shaft itself, a bushing inserted in the support shaft (2) as it appears in figures 3 and 4 or can be two halves generating a flange (figure 5) or any other of the usual solutions in mechanics. In this way, the operating thickness (7) being greater than the initial thickness (6), the necessary compression is produced for the correct absorption of forces in the confrontation with the support half cylinder (3a) and the tightening half cylinder (3b ) or with an eventual anchor bracket (3) single piece, making assembly and disassembly simple with the simple insertion of the anti-vibration bushing (1) without the need to disassemble the anchor bracket (3) or the support shaft (2 ). Accordingly, the present invention also allows the realization of the anchoring support (3) in single-piece execution (without the usual arrangement of support half-cylinder (3a) and clamping half-cylinder (3b)).
    Figure 1A shows the insertable arch-shaped package (4) in which in a detailed view it is distinguished that there is at least one truncated conical metal arch (12) of inclination similar to the internal frustoconical faces (10b and 11b) and flanked to both sides with truncated conical elastomeric arches (5), and located between the mixed exterior (10) and interior (11) metal arches. With this characteristic, the aforementioned axial compression is achieved.
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    Figure 1B shows the insertable arch-shaped package (4) preferably formed by annular arcs close to 180 ° that will be located on both sides of the axis and as can be seen in Figure 2, the anti-vibration bushing (1) is constituted by a meeting axial of at least two groups of insertable arcuate packages (4). Thanks to this configuration, a more homogeneous distribution of the forces supported by the anti-vibration bushing (1) is obtained. It is also provided that the anti-vibration bushing (1) is constituted by a group of three or more insertable arch-shaped packages (4), so that the distribution of forces during compression is more effective. Achieving greater ease of assembly and manufacturing at the same time.
    It is planned that other alternative embodiments be carried out depending on the force to be supported and the place of installation. Thus, in Fig. 5 an embodiment is shown in which the anti-vibration bushing (1) is constituted, consisting of an axial meeting of at least two groups of insertable arcuate packages (4) in which the mixed metal arches exterior (10) and interior (11) of the axial groupings of the groups of insertable arc-packets (4) have opposite inclinations and the one that stands out the most is the outer mixed metal arch (10).
    In Figure 6 another embodiment is observed in which the mixed outer (10) and inner (11) metal arches of the axial junction of the insertable arcuate packages (4) have equal inclinations.
    And in figures 7 and 8 other embodiments are shown in which the anti-vibration bushing (1) is arranged in the winding arm of the multiplier of the wind installation.
    Another possible embodiment of the invention is shown in Figures 10A and 10B, where it is envisaged that there are insertable arch-shaped packages (4) with mixed exterior (10) and interior metal arches (11) and truncated conical metal arches (12) with direction inclinations opposite, there being in the intermediate layers a metallic bow with two inclined faces (19).
    Finally, another feature of the invention is that it is provided that in the insertable arc-pack (4) there are accessible means that favor its extraction and that said extraction means is at least one threaded hole (16), as shown in the figure 9. Thanks to this threaded hole (16), in case the anti-vibration bushing (1) does not come out easily at the time of its disassembly, its extraction is facilitated without making a great effort by for example a useful threaded extraction (18 ) like the one in figure 9.
    Typical elastomers to be used according to the present invention are natural rubbers due to their optimum mechanical characteristics and fatigue behavior, but other synthetic elastomers could be used in case of wanting to improve the behavior at high temperatures, higher damping factors or better behavior at weathering for example, as they are known in the state of the art as well as their manufacture of different hardnesses.
    According to current turbines, anti-vibration bushings (1) of up to five hundred millimeters (500mm) in diameter can be made and the latest simulations performed demonstrate that with the present invention anti-vibration bushings (1) with radial load capacities can be made extreme of four hundred tons (400 tons) with axial efforts of only twenty tons (20 tons). Then it fully meets current needs and is perfectly adapted to the possibility of future extensions that may be necessary.
    Variations in materials, shape, size and arrangement of the component elements, described in a non-limiting manner, do not alter the essentiality of this invention, it being sufficient to proceed to its reproduction by an expert.
    权利要求:
    Claims (1)
    [1]
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    1st.- Anti-vibration bush (1) for support shafts (2) in wind or similar installations, of the anti-vibration bushings used to interpose between a support shaft (2) and an anchor support (3) of the support shaft (2) ), usually consisting of a support half cylinder (3a) and another clamping half cylinder (3b); anti-vibration bushing (1) composed of arc-shaped packages of metal layers and with the intermediate spaces filled with layers of elastomeric material, of the same longitudinal dimension and in which the metal layers and the layers of elastomeric material are cross-sectioned circle arcs, generating metal arcs and elastomeric arcs, characterized in that in the insertable arc pack (4) there is at least one pair of mixed metal arches exterior (10) and interior (11), each having respectively a cylindrical outer face (10a and 11a) and an internal truncated conical face (10b and 11b), with a coined longitudinal section (10c and 11c) with inclinations of opposite longitudinal direction and supplementary, and existing interposed between the mixed metal arches exterior (10) and interior (11), elastomeric arches truncated conical (5); each insertable arcuate package (4) of the anti-vibration bushing (1) is capable of having, in its radial stack, an initial axial deviation (8) corresponding to an initial thickness (6) and an axial operating alignment (9) with a thickness of greater operation (7), when compressed axially in the assembly, between an axially movable element (13) and an axially fixed element (15).
    2a.- Anti-vibration bush (1) according to claim 1, characterized in that in each insertable arcuate package (4) there is at least one truncated conical metal arch (12) of inclination similar to the internal frustoconical faces (10b and 11b) and flanked to both sides with truncated conical elastomeric arches (5), and located between the mixed exterior (10) and interior (11) metal arches.
    3a.- Anti-vibration bushing (1) according to the preceding claims, characterized in that the anti-vibration bushing (1) is constituted by a group of two insertable arcuate packages (4) with arcs close to 180 ° each.
    4a.- Anti-vibration bushing (1) according to the preceding claims, characterized in that the anti-vibration bushing (1) is constituted by an axial assembly of at least two groups of insertable arcuate packages (4).
    5a.- Anti-vibration bush (1) according to the preceding claims, characterized in that preferably the mixed metal arches exterior (10) and interior (11) of the axial groups of the groups of insertable arcuate packages (4) have opposite inclinations.
    6a.- Anti-vibration bushing (1) according to claims 1 to 5, characterized in that the outer (10) and inner mixed metal arches (11) of the axial junction of the insertable arcuate packages (4) have equal inclinations.
    7a.- Anti-vibration bushing (1) according to claims 1 and 2, characterized in that it is provided that the anti-vibration bushing (1) is constituted by a group of three or more insertable arch-shaped packages (4) with arcs that in their sum approximate full circle
    8a.- Anti-vibration bush (1) according to any of the preceding claims, characterized in that it is provided that in the insertable arc-pack (4) there are accessible means that favor its extraction.
    9a.- Anti-vibration bushing (1) according to claim 8a, characterized in that it is provided that the extraction means is at least one threaded hole (16).
    10a.- Anti-vibration bushing (1) according to claims ia to 7a, characterized in that it is provided that there are insertable arch-shaped packages (4) with mixed metal arches 5 exterior (10) and interior (11) and truncated conical metal arches (12) with inclinations of opposite senses.
    11a.- Anti-vibration bushing (1) according to any of the preceding claims, characterized in that preferably the wedging angle (20) is of the order of between two and fifteen degrees.
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    ES2689248B2|2021-04-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1314526A|1969-05-19|1973-04-26|Btr Industries Ltd|Resilient bearing assemblies|
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