CN217207360U - Sliding support structure and wind power generation equipment transmission device - Google Patents
Sliding support structure and wind power generation equipment transmission device Download PDFInfo
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- CN217207360U CN217207360U CN202221225727.6U CN202221225727U CN217207360U CN 217207360 U CN217207360 U CN 217207360U CN 202221225727 U CN202221225727 U CN 202221225727U CN 217207360 U CN217207360 U CN 217207360U
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Abstract
The present disclosure relates to a sliding support structure and a wind power plant transmission, the sliding support structure (10) having a metal base body (11), the surface of the metal base body (11) being structured with a metal layer (12), wherein the sliding support structure (10) further has a polymer material layer (13) covering the metal layer (12), wherein the metal layer (12) has a thickness of 0.3-5.5mm, a roughness Ra of at least 0.8 μm, and the polymer material layer (13) has a thickness of at least 0.01 mm.
Description
Technical Field
The present disclosure relates to a sliding support structure for a wind power plant transmission, a method for manufacturing the sliding support structure and a wind power plant transmission.
Background
Clean and environment-friendly wind power is characterized in that wind energy is utilized to rotate large blades, so that a main shaft of a wind driven generator rotates, and the generator is driven to convert kinetic energy into electric energy. A step-up gear, such as a gearbox, is usually required to increase the rotational speed between the blades and the generator, so bearings are required between the planet wheels and planet shafts of each stage moving relative to each other in the gearbox to support, reduce friction and reduce wear, thereby ensuring long-term operation of the gearbox.
The existing wind driven generator mostly adopts a rolling bearing between a planet wheel and a planet shaft. However, since the blades of the wind driven generator are subjected to the action of wind with variable sizes and directions, the sliding bearings are subjected to loads with variable sizes and directions, and in order to permanently and reliably ensure the normal operation of the wind driven generator, the rolling bearings are generally high in manufacturing cost, and subsequent maintenance and replacement costs are high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a slip bearing structure for wind power equipment transmission, can overcome the shortcoming among the prior art at least partially through this kind of slip bearing structure. Furthermore, the present invention also aims to provide a method for manufacturing the sliding support structure and a transmission of a wind power plant having the sliding support structure.
According to the utility model discloses a sliding support structure for wind power generation equipment transmission realizes from this that sliding support structure has the metal matrix, and this metal matrix's surface is constructed with the metal level, and wherein, sliding support structure still has the macromolecular material layer that covers the metal level, and wherein, the thickness of metal level is 0.3-5.5mm, and roughness Ra is 0.8 mu m at least to the thickness of macromolecular material layer is 0.01mm at least.
Through the scheme, the good bonding strength of the metal layer and the high polymer material layer of the sliding support structure can be ensured, and the good wear resistance and the long service life of the sliding support structure are realized. If necessary, the metal layer may be made porous or have grooves or projections and depressions. For forming the metal layer, for example, sintering, cladding, sand blasting, lathing, or the like may be used. For forming the polymer material layer, spraying, blade coating, or the like can be used. Of course, the metal layer and the polymer material layer may be formed in any other suitable manner.
According to an embodiment of the present invention, the metal matrix is made of a steel material, preferably 45# steel, 20CrMnMo, 20CrMnTi, 40Cr, 42CrMoA, 18CrNiMo7-6 or 34CrNiMo6, and the metal layer is an alloy layer made of a material different from the steel material, wherein the alloy layer is a copper-based alloy, an aluminum-based alloy or a tin-based alloy, preferably the metal layer is a copper-tin alloy, a copper-aluminum alloy, an aluminum-tin alloy, an aluminum-silicon alloy, an aluminum-zinc alloy, and one or more of tin, lead, bismuth, aluminum, graphite, molybdenum disulfide, tungsten disulfide, zinc sulfide, calcium fluoride, boron nitride are added in the metal layer.
Illustratively, when the metal layer is copper-tin alloy, the hardness is controlled to be 80-150 HB; when the metal layer is copper-aluminum alloy, the hardness is controlled to be 150-200 HB; when the metal layer is a heat-treated copper-nickel-tin alloy, the hardness is controlled to be 200HB and 240 HB; when the metal layer is an aluminum-based alloy or a tin-based alloy, the hardness is controlled to be 30 to 80 HB.
According to the utility model discloses an embodiment, the macromolecular material that forms macromolecular material layer includes resin and additive, wherein, the resin is at least one in polyamide, polyurethane, polyester, polyphenylene sulfide, fluorine-containing polymer, polyether ether ketone, polyimide resin, alkyd, polyacrylate, epoxy, phenolic resin, silicone, the additive is graphite, carbon nanotube, polytetrafluoroethylene, ultra high molecular weight polyethylene, molybdenum disulfide, tungsten disulfide, zinc sulfide, calcium fluoride, boron nitride, metallic lead, metallic silver and metallic bismuth, the additive accounts for 5 wt% -50 wt% of macromolecular material layer. For example, the additive constitutes 10 wt%, 15 wt%, 20 wt%, 25 wt%, 30 wt%, 35 wt%, 40 wt%, 45 wt% of the polymer material layer.
According to an embodiment of the present invention, the thickness of the metal layer is 0.5-2.5 mm. For example, the metal layer may have a thickness of 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4 mm.
According to an embodiment of the present invention, the roughness Ra of the metal layer is 1.6 to 25 μm. For example, the roughness of the metal layer is 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, 20 μm, 21 μm, 22 μm, 23 μm, 24 μm.
According to the utility model discloses an embodiment, the thickness of macromolecular material layer is 0.01mm-0.1 mm. For example, the thickness of the polymer material layer may be 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09 mm.
According to an embodiment of the invention, the metal matrix is plate-shaped.
According to an embodiment of the invention, the metal matrix has a cylindrical axial section.
According to the utility model discloses an embodiment, axial district section is cylindricly, perhaps axial district section is made by tubular product and is cylindricly, tubular product is the whole tubular structure of non-book system, no opening seam, no welding seam, and the metal level setting is on at least one side in the circumference inboard and the outside of cylindric axial district section.
According to the utility model discloses an embodiment, be provided with radial district section in at least one axial terminal side in the diaxon of axial district section is provided with the macromolecular material layer of metal level and cover metal level in radial district section department.
According to the utility model discloses an embodiment, the sliding support structure is equipped with lubricating medium transport structure in its one side that has metal level and macromolecular material layer, and lubricating medium transport structure is hole or groove.
According to an embodiment of the invention, the material hardness of the metal layer does not exceed 240 HB.
According to an embodiment of the present invention, the sliding support structure is a gear for a transmission of a wind power generation device, wherein the metal layer and the polymer material layer are configured at an inner circumferential side of the gear, or the sliding support structure is a transmission shaft for a transmission of a wind power generation device, wherein the metal layer and the polymer material layer are configured at an outer circumferential side of the transmission shaft, or the sliding support structure is a sliding bearing for a transmission of a wind power generation device, wherein the metal layer and the polymer material layer are configured at least one side in an inner circumferential side or an outer circumferential side of the sliding bearing.
A wind power plant transmission is also proposed, which has the above-mentioned sliding support structure.
The above embodiments may be combined arbitrarily, in accordance with common general knowledge in the art.
The utility model has the advantages of: compared with a wind power generation equipment transmission device supported by a rolling bearing, the sliding support structure has the advantages of light weight and integration. Particularly, when the sliding assembly is frequently started, the friction and wear performance of the sliding assembly is improved by using the arranged high polymer layer as initial lubrication, and the service life of the sliding assembly can be prolonged. Furthermore, the sliding support structure according to the present invention is simple to manufacture. Through the metal layer that sets up for proposed sliding support structure has better compliance and corrosion resistance, through the macromolecular material layer that sets up, can provide good lubrication, in order to reduce the friction between the contact pair.
Drawings
The invention is further elucidated below with the aid of the accompanying drawing. Wherein the content of the first and second substances,
fig. 1 to 6 schematically show cross-sectional illustrations of a sliding support structure metal layer, respectively a polymer layer, according to different embodiments of the present invention;
fig. 7 to 9 respectively schematically show longitudinal sectional illustrations of a sliding support structure form according to different embodiments of the invention;
fig. 10 shows a cross-sectional illustration of a sliding support structure provided with a lubricating medium conveying structure according to an embodiment of the invention;
fig. 11 to 13 respectively schematically show an expanded illustration of a sliding support structure provided with a lubricating medium conveying structure according to different embodiments of the present invention;
fig. 14 to 16 each schematically show a gear transmission having a sliding support structure according to the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention have been illustrated in the accompanying drawings, it is to be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In the following description, for the purposes of illustrating various utility embodiments, certain specific details are set forth in order to provide a thorough understanding of the various utility embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with the disclosure may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.
Reference throughout the specification to "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiments is included in at least one embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the terms first, second and the like used in the description and the claims are used for distinguishing objects for clarity, and do not limit the size, other order and the like of the described objects.
Fig. 1 to 6 each schematically show a sectional illustration of a sliding support structure 10 according to different embodiments of the present invention. As can be seen from the figures, the sliding support 10 has a base body 11, the surface of which 11 is structured with a metal layer 12, wherein the metal layer has a material hardness of not more than 240HB, a thickness of 0.3 to 5.5mm and a roughness Ra of at least 0.8 μm. Alternatively, the metal layer 12 may be porous. Preferably, the thickness is 0.5-2.5mm, and the roughness Ra is 1.6-25 μm.
It is noted here that the sliding support structure 10 is suitable for use where the relative movement with the mating member to be mated is sliding. Furthermore, the substrate 11 is only schematically shown in the figures, and the substrate 11, in particular the surface of the substrate to which the metal layer 12 is to be applied, may have any suitable shape, e.g. plate-like, cylindrical, etc., as required.
The base body 11 may be made of a steel material, preferably 45# steel, 20CrMnMo, 20CrMnTi, 40Cr, 42CrMoA, 18CrNiMo7-6 or 34CrNiMo 6.
The metal layer 12 is an alloy layer made of a material different from a steel material, wherein the alloy layer is a copper-based alloy, an aluminum-based alloy, or a tin-based alloy, and preferably, the alloy layer is a copper-tin alloy, a copper-aluminum alloy, an aluminum-tin alloy, an aluminum-silicon alloy, or an aluminum-zinc alloy, and one or more of tin, lead, bismuth, aluminum, graphite, molybdenum disulfide, tungsten disulfide, zinc sulfide, calcium fluoride, and boron nitride are added to the metal layer.
For example, to form the metal layer 12 on the substrate 11, the material forming the metal layer 12 may be applied, for example, by overlaying, sintering, casting, rolling, or other suitable methods.
The polymer material layer 13 may be applied on the metal layer 12, such that the polymer material layer 13 covers the metal layer 12 and fills the concave-convex or the pore of the metal layer 12, wherein the polymer material forming the polymer material layer 13 includes at least one of a resin and an additive, wherein the resin is at least one of polyamide, polyurethane, polyester, polyphenylene sulfide, fluoropolymer, polyether ether ketone, polyimide resin, alkyd resin, polyacrylate, epoxy resin, phenolic resin, and silicone resin, and the additive is at least one of graphite, carbon nanotube, polytetrafluoroethylene, ultra-high molecular weight polyethylene, molybdenum disulfide, tungsten disulfide, zinc sulfide, calcium fluoride, boron nitride, metallic lead, metallic silver, and metallic bismuth.
The thickness of the polymer material layer 13 is at least 0.01mm, preferably 0.01mm to 0.1 mm. For example, the thickness of the polymer material layer may be 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09 mm.
For example, in order to apply the polymer material layer 13, a raw material for forming the polymer material layer 13 may be coated on the metal layer 12, and the raw material may be subjected to a curing process as necessary.
In the polymer material layer 13, the additive accounts for 5 wt% to 50 wt% of the polymer material layer 13, wherein the particle size of the additive may be 5 to 15 μm.
Preferably, the thickness of the polymer material layer 13 is at least 0.01mm, preferably 0.01mm-0.05 mm.
Fig. 1 and 2 show a sliding support 10 which is provided with a metal layer 12 on one side of a base body 11, wherein a polymer material layer 13 has not yet been applied. In fig. 1, the metal layer 12 is shown with holes distributed over the entire layer thickness, wherein the holes can be seen as being distributed in dots over the entire thickness of the metal layer 12. In fig. 2, a metal layer 12 is shown having apertures formed by grooves of a predetermined length extending over part of the thickness of the metal layer.
Unlike fig. 1 and 2, the sliding support structure 10 shown in fig. 3 and 4 has a polymer material layer 13 that may be applied on a metal layer 12, wherein a material forming the polymer material layer fills pores or irregularities in the metal layer 12.
In the embodiment shown in fig. 5 and 6, a layer structure is provided on both sides of the base body 11. Fig. 5 shows a sliding support structure 10 having a metal layer 12 and a polymer material layer 13 applied to one side of a base 11 and having no polymer material layer 13 applied to the metal layer 12 on the opposite side. Fig. 6 shows a sliding support structure 10 having a metal layer 12 and a polymer material layer 13 applied to both sides of a base 11.
As shown in fig. 7, the sliding support structure 10 or its base body 11 may be cylindrical. At this time, the base 11 forming the sliding support structure 10 is preferably formed of a pipe material. In other words, the sliding support structure 10 of fig. 7 has only the axial section 10 a. The axial sections 10a may have the same or different thicknesses in their axial direction.
In an example not shown, the sliding support structure may have a structure substantially similar to that of the sliding support structure 10 of fig. 7, however, with the difference that a flange is provided on at least one axial end side of the base body.
In the embodiment shown in fig. 8, the sliding support structure 10 also has a cylindrical axial section 10a, radial sections 10b are provided on both axial end sides of the axial section 10a, and the above-described layer structure, that is, a composite structure of a metal layer and a polymer material layer is provided on at least one of the circumferential inner side and the circumferential outer side of the axial section 10a and the radial sections (for example, on the surfaces of the two radial sections 10b facing away from each other). The radial section 10b may be provided separately and then integrally connected with the axial section.
In the embodiment shown in fig. 9, one end side of the axial section 10a of the sliding support structure 10 is provided with a flange, the sliding support structure 10 has a radial section 10b at the opposite other end side of the axial section 10a, and the axial section 10a and the radial section 10b may be provided with the above-described layer structure on a suitable surface, for example, a composite structure including a metal layer and a polymer material layer.
In order to further improve the lubrication effect of the sliding support structure 10, the sliding support structure 10 is provided with a lubrication medium conveying structure on the layer structure side thereof, and the lubrication medium conveying structure is a hole or a groove. Fig. 10 to 12 each show an exemplary embodiment of a different type of lubricant conveying structure provided at a cylindrical axial section of the sliding bearing structure 10, wherein the lubricant conveying structure may extend over only a part of the length of the axial section, i.e. the lubricant conveying structure does not open out to the free end side of the axial section. The lubricating medium is, for example, lubricating oil or grease.
Fig. 10 and 11 show an embodiment of a lubrication delivery structure having holes 10c and grooves 10 d. The bore 10c may be arranged centrally in the axial section 10a in the axial direction, the groove 10d comprising a communicating first groove 10d1 and a second groove 10d2, the first groove 10d1 being inclined with respect to the centre axis a of the axial section, the second groove 10d2 being perpendicular to the centre axis a, a free end of the bore 10c opening into the second groove 10d2, whereby the bore 10c, the first groove 10d1 and the second groove 10d2 communicate with each other, so that a lubricating medium may be guided through the bore 10c into the respective groove, whereby lubrication is achieved at the layer structure.
Fig. 11 shows an expanded view of fig. 10, and the first groove 10d1 is approximately shaped like a letter "8". The second groove 10d2 extends linearly in a line shape. Preferably, the groove is provided in the range of 80% of the axial length of the axial section, and the two axial tips of the groove are spaced apart from the free end face of the axial section.
Fig. 12 shows the lubricating medium groove 10d3 extending in the axial direction of the axial section of the sliding support structure 10, the longitudinal extension direction of which is parallel to the center axis a of the axial section. The groove 10d3 is also preferably provided in the range of 80% of the axial length of the axial section, with the two axial tips of the groove spaced from the free end face of the axial section.
Fig. 13 differs from fig. 12 in that the longitudinal extension of the groove 10d3 is not parallel to the central axis a of the axial section.
The sliding support structure 10 described above may be used in a wind power plant transmission. For example, referring to fig. 14, the sliding support structure 10 is a gear for a transmission of a wind power plant, wherein at least the metal layer 12 is configured on an inner peripheral side of the gear; referring to fig. 15, the sliding support structure 10 is a propeller shaft 30 for a wind power plant transmission, wherein at least the metal layer 12 is configured on the outer circumferential side of the propeller shaft; referring to fig. 16, the sliding support structure 10 is a sliding bearing for a transmission of a wind power plant, wherein at least the metal layer 12 is configured on at least one of an inner circumferential side or an outer circumferential side of the sliding bearing, whereby a working surface is formed by a surface provided with a layer structure to form a friction pair with a mating surface of the mating member 20.
Particularly for the case shown in fig. 16, i.e., where sliding support structure 10 is provided separately, sliding support structure 10 may be fixed (e.g., an interference fit, such as a shrink fit or cold sleeve, or by a bayonet connection, pinned connection, welded connection, etc.) in any suitable manner relative to forming gear 30 or drive shaft 40 to ensure that sliding support structure 10 is not rotatable relative to gear 30 or drive shaft 40. Alternatively, both the inner and outer circumferential surfaces of the separately provided sliding support structure 10 form working surfaces to form friction pairs with the respective surfaces of the gear 30 and the transmission shaft 40.
Through according to the utility model discloses a sliding support structure 10, especially when it is used for wind power generation equipment transmission, metal level 12 thickness is steerable to be 0.3-5.5mm, and the processing allowance is steerable within 5mm, has practiced thrift the use of alloy layer material, has greatly reduced slide bearing in the process of manufacturing the process time and the material cost of alloy layer material.
Particularly when the sliding support structure 10 is provided with a metal layer and a polymer material layer, the base 11 supports the sliding support structure, the metal layer increases the compliance and corrosion resistance of the sliding support structure, and the polymer material layer 13 provides at least part of the lubricating effect to reduce friction. Additionally, by the provided lubrication medium transport structure, the lubrication is further improved.
The technical result is explained in more detail below with reference to different exemplary embodiments when the plain bearing arrangement 10 according to the invention is embodied as a plain bearing. The polymer material mentioned in the following examples is composed of a matrix resin and an additive, wherein the matrix resin is a phenolic resin, and the proportion of the phenolic resin is 70 wt%; the additive is prepared from graphite and polytetrafluoroethylene, wherein the size of graphite particles is 10 mu m and accounts for 20%, and the size of polytetrafluoroethylene particles is 10 mu m and accounts for 10%. The thickness of the polymer layer is 0.04 mm.
Comparative example 1
The bearing is made of CuSn8Ni, the hardness is 90-120HB, the comparative example bearing is fixed on a gear shaft, a friction pair is formed by an outer ring of the bearing and an inner ring of the gear in the working process, an oil hole of a splayed oil groove is processed on the outer diameter cylindrical surface of the radial sliding bearing, and lubricating oil is conveyed to the surface of the friction pair by a lubricating oil conveying system in the gear shaft in the working process to provide external lubrication for the sliding bearing.
Example 1
The sliding bearing is a bearing structure with a sliding function processed on a gear shaft, a friction pair is formed by the radial sliding bearing and a gear inner ring in the working process, an alloy layer is prepared on the outer cylindrical surface of the gear shaft by adopting a cladding technology, the material of the gear shaft is 42CrMoA, the material of the alloy layer is CuSn8Ni, the hardness of the alloy layer is 90-120HB, the thickness of the alloy layer is 3.0mm, the alloy layer has a porous structure, the surface roughness Ra2 mu m, a high polymer material layer is applied to the surface of the alloy layer, then a splayed oil groove is processed on the surface of the gear shaft, and lubricating oil is delivered to the surface of the friction pair by a lubricating oil delivery system in the gear shaft in the working process to provide external lubrication for the sliding bearing.
Example 2
The sliding bearing is in an integral cylinder shape, the supporting layer is 34CrNiMo6, an alloy layer is prepared by cladding on the outer diameter cylindrical surface of the supporting layer of the sliding bearing, the alloy layer is made of CuAl10Fe5Ni5, the hardness of the alloy layer is 140-190HB, the thickness of the alloy layer is 0.5mm, the alloy layer has a porous structure, the surface roughness Ra13 mu m, and a high polymer material layer is applied to the surface. The sliding bearing is fixed on a gear shaft, a friction pair is formed by the sliding bearing and the inner ring of the gear in the working process, then a linear oil groove and an oil hole are processed on the alloy surface of the sliding bearing, and lubricating oil is delivered to the surface of the friction pair by a lubricating oil delivery system in the gear shaft in the working process to provide external lubrication for the sliding bearing.
Example 3
The sliding bearing comprises an integral cylindrical radial sliding bearing and an axial sliding bearing, wherein a supporting layer of the sliding bearing is made of 45# steel, the thickness of an alloy layer is 0.5mm, a friction pair is formed by the radial sliding bearing and an inner ring of a gear in the working process, an alloy layer is prepared on the outer diameter cylindrical surface of the supporting layer of the radial sliding bearing by adopting a cladding technology, the material is CuSn8Ni, the hardness of the alloy layer is 90-120HB, the alloy layer has a groove structure, the surface roughness Ra2 mu m, and a high polymer material layer is applied to the surface. Meanwhile, an alloy layer is cladded on the surface of the axial sliding bearing, the material is AlSn20Cu, and the hardness of the alloy layer is 30-45 HB. And finally, processing splayed oil grooves and oil holes on the outer diameter cylindrical surface of the radial sliding bearing, wherein lubricating oil is delivered to the surface of the friction pair by a conveying system in the gear shaft in the working process, so that external lubrication is provided for the sliding bearing.
Example 4
The sliding bearing comprises an integral cylindrical radial sliding bearing and an axial sliding bearing, wherein the material of a supporting layer of the radial sliding bearing and the axial sliding bearing is 42CrMoA, the thickness of an alloy layer is 0.5mm, a friction pair is formed by the radial sliding bearing and an inner ring of a gear in the working process, an alloy layer is prepared on the outer diameter cylindrical surface of the supporting layer of the radial sliding bearing by adopting a cladding technology, the material is CuSn12Ni2, the hardness of the alloy layer is 100-150HB, and meanwhile, the alloy layer is clad on the surface of the supporting layer of the axial sliding bearing, the material is AlSn10Si4Cu, and the hardness of the alloy layer is 30-60 HB. The alloy layer has a porous structure, the roughness of the surface of the alloy layer is Ra3.2 mu m, and a polymer material layer is applied to the surface of the radial sliding bearing. And finally, processing a linear oil groove and an oil hole on the outer diameter cylindrical surface of the radial sliding bearing, and conveying lubricating oil to the surface of the friction pair by a conveying system in the gear shaft in the working process to provide external lubrication for the sliding bearing.
Example 5
The sliding bearing is in an integral cylinder shape, the supporting layer is 20CrMnMo, friction pairs are respectively formed with a gear shaft and a gear inner ring in the working process, an alloy layer is prepared on an inner diameter cylindrical surface and an outer diameter cylindrical surface of the supporting layer by adopting a cladding technology, the alloy layer is made of CuNi9Sn6, the hardness of the alloy layer is 240HB, the radial sliding bearing has different wall thicknesses along the axial direction, the thickness of the middle position is 0.5mm, the alloy layer on the inner diameter cylindrical surface has a porous structure, the surface roughness of the alloy layer is Ra6.4 mu m, and a high polymer material layer is applied to the surface.
According to the working environment of the wind power gear box, an abrasion test is carried out, the test load is 15MPa, the linear speed is 0.1m/s, the lubricating oil is Mobil XMP320 gear oil, and the running time is 100 h. The results of the relevant tests are shown in table 1. Compared with the traditional single metal bearing, the bearing structure with the sliding function processed on the gear shaft has better frictional wear performance, and the applied high polymer layer can effectively improve the working state of the assembly and further reduce the wear of the supporting structure; when the blades are affected by wind power and wind with changeable wind directions, in the embodiments 2, 3, 4 and 5, the overall cylindrical radial sliding bearing and the axial sliding bearing are matched for use, so that the influence of acting force with alternating magnitude and direction can be borne, and the abrasion of the components in the working process is greatly reduced. The utility model discloses a slide bearing has good frictional wear performance and lower running temperature, prolongs slide bearing assembly's life, can further reduce wind power generation set's manufacturing and maintenance cost.
TABLE 1 the utility model discloses a slide bearing and bearing performance index of the same type
It is to be noted that the features or feature combinations of the devices according to the invention described above and the features and feature combinations mentioned in the figures and/or shown in the figures only can be used not only in the respectively given combination but also in other combinations or alone without departing from the scope of the invention.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the present invention to the scope of the embodiments described. It will be appreciated by those skilled in the art that many more modifications and variations are possible in light of the above teaching and are within the scope of the invention.
Claims (12)
1. Sliding support structure (10) for a wind power plant transmission, the sliding support structure (10) having a metal base body (11), the surface of the metal base body (11) being structured with a metal layer (12), characterized in that the sliding support structure (10) further has a polymer material layer (13) covering the metal layer (12), wherein the metal layer (12) has a thickness of 0.3-5.5mm, a roughness Ra of at least 0.8 μm, and the polymer material layer (13) has a thickness of at least 0.01 mm.
2. The sliding support structure (10) of claim 1 wherein the metal layer (12) has a thickness of 0.5-2.5 mm.
3. The sliding support structure (10) according to claim 1, wherein the roughness Ra of the metal layer (12) is between 1.6 μ ι η and 25 μ ι η.
4. The sliding support structure (10) according to claim 1, wherein the thickness of the layer of polymer material (13) is 0.01mm-0.1 mm.
5. The sliding support structure (10) according to any one of claims 1 to 4, characterized in that the metal base body (11) is plate-shaped.
6. The sliding support (10) according to any one of claims 1 to 4, wherein the metal base (11) has a cylindrical axial section.
7. The sliding support structure (10) of claim 6,
the axial section is cylindrical, or
The axial section is a non-rolled, seamless, and seamless, unitary tubular structure, is made of a tube material and is cylindrical, and the metal layer (12) is provided on at least one of a circumferential inner side and an outer side of the cylindrical axial section.
8. The sliding support structure (10) according to claim 7, wherein a radial section is provided at least one of both axial end sides of the axial section, at which the metal layer (12) and a polymer material layer (13) covering the metal layer (12) are provided.
9. The sliding support structure (10) according to any one of claims 1 to 4, wherein the sliding support structure (10) is provided with a lubrication medium transport structure, which is a hole or a groove, at its side having the metal layer (12) and the polymer material layer (13).
10. The sliding support structure (10) according to any one of claims 1 to 4, wherein the sliding support structure (10) is a gear for a wind power plant transmission, wherein the metal layer (12) and the polymer material layer (13) are configured on the inner circumferential side of the gear, or
The sliding support structure (10) is a transmission shaft for a transmission of a wind power plant, wherein the metal layer (12) and the polymer material layer (13) are formed on the outer circumferential side of the transmission shaft, or
The sliding support structure (10) is a sliding bearing for a transmission of a wind power plant, wherein the metal layer (12) and the polymer material layer (13) are formed on at least one of an inner circumferential side or an outer circumferential side of the sliding bearing.
11. The sliding support structure (10) according to any one of claims 1 to 4, wherein the material hardness of the metal layer (12) does not exceed 240 HB.
12. A wind power plant transmission, characterized in that it has a sliding support structure (10) according to any of the previous claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221225727.6U CN217207360U (en) | 2022-05-19 | 2022-05-19 | Sliding support structure and wind power generation equipment transmission device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4357606A1 (en) * | 2022-10-19 | 2024-04-24 | LM Wind Power A/S | Methods for manufacturing protective elements |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4357606A1 (en) * | 2022-10-19 | 2024-04-24 | LM Wind Power A/S | Methods for manufacturing protective elements |
| WO2024084005A1 (en) * | 2022-10-19 | 2024-04-25 | Lm Wind Power A/S | Methods for manufacturing protective elements |
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