Cylindrical roller bearing with fixed pressing plate for wind power jacket

Abstract

The utility model relates to a wind power jacket cylindrical roller bearing with a fixed pressing plate, which comprises an outer ring, a loose rib, an inner ring, a pressing plate component and a retainer, the retainer comprises a retainer seat and a retainer cover, the retainer cover is arranged on the retainer seat, and the retainer seat and the retainer cover form a complete retainer; bolt holes are uniformly formed in the retainer cover corresponding to the position of each retainer beam; a pressing plate assembly is arranged at any bolt hole position of the outer end face of the retainer cover, the edge of one end of the pressing plate assembly covers the retainer cover area, and the edge of the other end of the pressing plate assembly extends towards the loose rib and at least covers the inner diameter edge of the loose rib. The pressing plate assembly is additionally arranged and is matched with the bearing assembly and the bearing seat, so that the effect that one plate has two purposes is achieved; different functions of limiting and fixing under two working conditions of packaging and transportation and on-machine use are realized, so that the problem that the bearing axially moves in the bearing seat due to loose sleeve in the loading and transportation process and loose sealing cover in the on-machine use process is effectively solved.

Description

Technical Field

[0001] The utility model relates to a large-scale wind power bearing structure, in particular to a cylindrical roller bearing with a fixed pressure plate on a wind power outer jacket and a mounting and dismounting method thereof, belonging to the technical field of bearings. Background Art

[0002] Wind power cylindrical roller bearings are a type of rolling bearings with the advantages of high rotation accuracy and ease of use.

[0003] Due to the split single-sided flat ring structure, the flat ring of the bearing is not fixed when the bearing product is packaged and sent to the user. When the user disassembles and assembles the bearing, the flat ring is separated from the bearing, which is very likely to become loose. The flat ring may even hit people or fall to the ground and break into pieces, becoming waste. Therefore, the bearing is inconvenient during the installation and transportation process, posing a safety hazard or increasing the scrap rate.

[0004] At the same time, after the traditional large-scale FD wind power cylindrical roller bearing is installed, the bearing outer sleeve plane is in contact with the bearing seat sealing cover plane. However, the sealing cover fixing screws will loosen after a period of time after the bearing is installed and used. At this time, the axial clearance of the bearing in the bearing seat is directly increased, and indirectly the bearing inner sleeve plane and the outer sleeve plane are not on the same plane, which directly leads to uneven force during operation of the bearing and shortens the bearing service life. The shorter the bearing is used, the more frequent the wind turbine damage will be, causing great losses to both the bearing manufacturer and the wind turbine company. Summary of the Invention

[0005] In order to solve the problem that when the service life of the wind turbine reaches a predetermined period or even exceeds the predetermined period, the sealing cover is loosened, causing the bearing to move axially in the bearing seat and become unable to operate normally, the purpose of the utility model is to provide a cylindrical roller bearing with a fixed pressure plate on a wind turbine jacket and a method for loading and unloading the same. By improving the structure of the original single-row cylindrical roller bearing series, it can solve the problems of loosening of the bearing during installation and transportation and axial movement of the bearing in the bearing seat due to loose sealing cover when the bearing is used on the machine, thereby extending the service life of the bearing.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket, comprising: an outer ring, a flat retaining ring, an inner ring, a pressure plate assembly, a plurality of cylindrical rollers and a cage, the cage comprising a cage seat and a cage cover, a plurality of cage beams are evenly arranged on one side of the cage seat, and pockets corresponding to a plurality of rollers are provided between each two adjacent cage beams, a cage cover is provided on the cage seat and forms a complete cage with the cage cover; a cage cover corresponding to the position of each cage beam is evenly arranged on the cage cover Bolt holes are arranged, and the cage cover is connected to the cage seat by a number of bolts; the outer ring is a single rib structure, and a flat rib is provided on the outer ring end face opposite to the single rib position, and a roller shoulder is formed on the inner diameter end of the flat rib, and the surface where the outer diameter is located is flush with the outer circumferential surface of the outer ring; the plurality of cylindrical rollers are all rollingly arranged between the outer ring raceway and the inner ring raceway; a pressure plate assembly is provided at any bolt hole position on the outer end face of the cage cover, and one end edge of the pressure plate assembly covers the cage cover area, and the other end edge extends toward the flat rib and at least covers the inner diameter edge of the flat rib;

[0007] Furthermore, the number of the pressure plate assemblies is set to 3-4, which are evenly distributed on the retaining frame cover along the circumference of the bearing; the number of pressure plate assemblies can be increased according to the stress conditions of the entire bearing to ensure balanced stress.

[0008] Furthermore, the pressure plate assembly includes: a pressure plate and a matching fixing bolt; the pressure plate is provided with a pressure plate bolt hole that is the same as the bolt hole of the retainer cover, and the pressure plate is passed through the pressure plate bolt hole from the outside of the pressure plate and screwed into the bolt hole on the retainer cover by the fixing bolt, thereby fixing the pressure plate to the retainer cover;

[0009] Furthermore, the pressure plate is an isosceles trapezoidal structure that is narrow at the top and wide at the bottom, with the lower wide side facing the inner ring and the edge covering the inner diameter edge of the retaining cover, and the upper narrow side facing the flat retaining ring, and the narrow side edge extending beyond the inner diameter edge of the flat retaining ring and close to half the width of the flat retaining ring end face; in this way, the flat retaining ring is blocked and limited by the upper narrow side area of the pressure plate;

[0010] Furthermore, the bolt holes on the pressing plate are positioned toward the lower wide side area of the pressing plate.

[0011] In the above structure of this scheme, after the bearing is assembled, 3-4 bolt hole positions are selected along the circumference of the retaining frame cover to install the pressure plate assembly in sequence, so that the pressure plate of the pressure plate assembly extends to the outer diameter of the outer end surface of the flat retaining ring, thereby blocking the flat retaining ring to achieve position limiting; the bearing with the pressure plate assembly installed is packed in a box for transportation to prevent the bearing parts from falling apart during the transportation process of the bearing and when the user disassembles it.

[0012] Furthermore, the design of the bearing of the present invention is not only based on the consideration of solving the problem that the bearings are prone to loosening during transportation, but also on the problem that when the bearing seat sealing cover is loose during the use of the bearing on the machine, an axial gap is generated in the bearing seat. By converting the installation position of the pressure plate and fixing it to the bearing seat, the flat retaining ring is positioned, thereby preventing the bearing from having an axial gap in the bearing seat during operation and causing the outer ring plane and the inner ring plane of the bearing to be not on the same plane; the "one plate for two uses" is achieved through the conversion of the pressure plate.

[0013] Furthermore, a bearing seat is provided outside the outer ring of the bearing, the bearing is embedded and installed in the bearing seat so that the outer end surface of the bearing flat retaining ring is flush with the end surface of the bearing seat, and a sealing cover is provided at the outer end of the bearing seat, which is connected to the bearing flat retaining ring by screws;

[0014] When the above-mentioned bearing is used on a machine, the inner ring is fixed to the equipment shaft, and the outer ring is placed in the bearing seat. The pressure plate of the pressure plate assembly arranged on the bearing retainer cover is flipped forward or backward to achieve mirror symmetry with the original pressure plate position, so that the wide side area of the pressure plate corresponds to the end face of the bearing seat. The end face of the bearing seat is provided with bolt holes matching the fixing screws in the pressure plate assembly, and the pressure plate is fixed to the bearing seat by the fixing bolts of the pressure plate assembly, and the narrow side area of the pressure plate corresponds to the outer end face of the bearing flat retaining ring to achieve the positioning of the bearing; with this design, even if the sealing cover is loose, the pressure plate can be used to control the bearing to prevent axial movement in the bearing seat, thereby extending the service life of the bearing.

[0015] The method of loading and unloading a cylindrical roller bearing with a fixed pressure plate in a wind turbine jacket as above is:

[0016] When the finished bearing needs to be packaged and transported, select any 3-4 bolt holes on the cage cover and fix each pressure plate to the cage cover in sequence with the fixing screws so that the pressure plate forms a limit on the flat retaining ring, thus completing the pressure plate installation;

[0017] The state of the pressure plate on the bearing retainer cover after the pressure plate is installed is that the narrow side area of the pressure plate is pressed on the flat retaining ring toward the outer diameter direction of the bearing;

[0018] When the bearing needs to be used on the machine, the bearing with the pressure plate installed is fixed on the equipment shaft and embedded in the bearing seat; at this time, loosen the fixing bolts of the first pressure plate assembly, then rotate the pressure plate 180 degrees clockwise or counterclockwise, and then tighten the fixing bolts to fix the pressure plate on the end face of the bearing seat to achieve the positioning of the pressure plate on the bearing; after completing the position conversion of the first pressure plate, follow the above operation to convert the position of the second pressure plate, and so on, and finally complete the disassembly and conversion of all pressure plate assemblies step by step;

[0019] After the position of each of the above-mentioned pressure plates is changed, the narrow side area of the pressure plate is pressed on the flat retaining ring toward the inner diameter direction of the bearing.

[0020] The beneficial effects of the solution of a cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket of the utility model are:

[0021] The bearing of the utility model achieves the effect of "one plate for two purposes" by adding a pressure plate assembly and cooperating with the bearing assembly and the bearing seat respectively; it realizes different limiting and fixing functions under the two working conditions of packaging and transportation and machine use, thereby effectively solving the problems of loosening of the sleeve during installation and transportation and axial movement of the bearing in the bearing seat due to loose sealing cover when used on the machine, ensuring the normal use and operation of the bearing, thereby extending the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket according to the present invention.

[0023] Figure 2 for Figure 1 Partial side view of .

[0024] Figure 3 for Figure 1 Medium voltage board structure diagram.

[0025] Figure 4 This is a diagram of the fixing bolt structure in the pressure plate assembly.

[0026] Figure 5 This is the assembly drawing of the bearing of this utility model for use on a machine.

[0027] Figure 6 for Figure 5 Partial side view of .

[0028] In the figure, 1, outer ring, 2, flat retaining ring, 3, inner ring, 4, cylindrical roller, 5, cage cover, 6, cage cover bolt hole, 7, pressure plate, 8, fixing bolt, 7.1, pressure plate bolt hole, 7.2, lower wide side, 7.3, upper narrow side, 9, bearing seat. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] like Figure 1 、 2 The cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket shown in the figure comprises: an outer ring 1, a flat retaining ring 2, an inner ring 3, a pressure plate assembly, a plurality of cylindrical rollers 4 and a cage, wherein the cage comprises a cage seat and a cage cover 5. A plurality of cage beams are evenly arranged around one side of the cage seat, and pockets corresponding to the plurality of rollers 4 are provided between each two adjacent cage beams. A cage cover 5 is provided on the cage seat and forms a complete cage with the cage cover 5; bolt holes 6 are evenly arranged on the cage cover 5 corresponding to the position of each cage beam, and the cage cover 5 is fixed to the cage seat. A plurality of bolts are connected to the cage seat; the outer ring 1 is a single-rib structure, and a flat rib 2 is provided on the end face of the outer ring 1 opposite to the single rib. The inner diameter end of the flat rib 2 forms a roller 4 shoulder, and the outer diameter surface is flush with the outer circumferential surface of the outer ring 1; the plurality of cylindrical rollers 4 are all rolled between the outer ring raceway and the inner ring raceway; a pressure plate assembly is provided at any bolt hole 6 position on the outer end face of the cage cover 5, with one end edge of the pressure plate assembly covering the cage cover 5 area, and the other end edge extending toward the flat rib 2 and at least covering the inner diameter edge of the flat rib 2;

[0031] In this embodiment, the number of the pressure plate assemblies is set to 4, which are evenly distributed on the cage cover 5 along the circumference of the bearing;

[0032] like Figure 3-4 As shown, the pressure plate assembly includes: a pressure plate 7 and a matching fixing bolt 8; the pressure plate 7 is provided with a pressure plate bolt hole 7.1 that is identical to the retainer cover bolt hole 6, and the pressure plate 7 is fixed to the retainer cover 5 by the fixing bolt 8 passing through the pressure plate bolt 7.1 hole from the outside of the pressure plate 7 and screwing into the bolt hole 6 on the retainer cover 5, thereby fixing the pressure plate 7 to the retainer cover 5;

[0033] Furthermore, the pressure plate 7 is an isosceles trapezoidal structure that is narrow at the top and wide at the bottom. The lower wide side 7.2 faces the inner ring 3 and its edge covers the inner diameter edge of the retaining cover 5. The upper narrow side 7.3 faces the flat retaining ring and extends beyond the inner diameter edge of the flat retaining ring 2 and close to half the width of the end face of the flat retaining ring 2. In this way, the flat retaining ring 2 is blocked and limited by the upper narrow side 7.3 of the pressure plate 7.

[0034] Furthermore, the bolt holes 7 . 1 on the pressing plate 7 are located toward the lower wide side 7 . 2 of the pressing plate 7 .

[0035] In the above structure of this solution, after the bearing is assembled, four bolt holes 6 are selected from the retaining cover 5 along the circumferential direction to install the pressure plate assembly in sequence, so that the pressure plate 7 of the pressure plate assembly extends to the outer diameter of the outer end surface of the flat retaining ring 2, thereby blocking the flat retaining ring 2 to achieve position limiting; the bearing with the pressure plate assembly installed is packed in a box for transportation to prevent the bearing parts from loosening during the transportation process and when the user disassembles the bearing.

[0036] The design of the bearing of the present invention is not only based on the consideration of solving the problem that the bearings are prone to loosening during transportation, but also on the problem that when the bearing seat sealing cover is loose during the use of the bearing on the machine, an axial gap is generated in the bearing seat. By converting the installation position of the pressure plate 7 and fixing it to the bearing seat 9, the flat retaining ring 2 is positioned, thereby preventing the axial gap from occurring in the bearing seat 9 during operation and causing the outer ring plane and the inner ring plane of the bearing to be not in the same plane; the conversion of the pressure plate 7 realizes "one plate for two uses".

[0037] like Figure 5-6 As shown, a bearing seat 9 is provided outside the bearing outer ring 1, and the bearing is embedded in the bearing seat 9 so that the outer end surface of the bearing flat retaining ring 2 is flush with the end surface of the bearing seat 9. A sealing cover is provided at the outer end of the bearing seat 9, and the sealing cover is connected to the bearing flat retaining ring by screws;

[0038] When the above-mentioned bearing is used on the machine, the inner ring 3 is fixed to the equipment shaft, and the outer ring 1 is placed in the bearing seat 9. The pressure plate 7 of the pressure plate assembly arranged on the bearing retainer cover 5 is flipped forward or backward to achieve mirror symmetry with the original pressure plate position, so that the wide side 7.2 area of the pressure plate corresponds to the end face of the bearing seat 9. The end face of the bearing seat 9 is provided with bolt holes matching the fixing screws 8 in the pressure plate assembly, and the pressure plate 7 is fixed to the bearing seat 9 by the fixing bolts 8 of the pressure plate assembly, and the narrow side 7.3 area of the pressure plate 7 corresponds to the outer end face of the bearing flat retaining ring 2 to achieve the positioning of the bearing; with this design, even if the sealing cover is loose, the pressure plate 7 can be used to control the bearing to prevent axial movement in the bearing seat 9, thereby extending the service life of the bearing.

[0039] It should be noted in this solution that the bolt holes 7.1 on the pressure plate 7 are located towards the lower wide side 7.2 of the pressure plate 7. The purpose is to ensure that the bolt holes 7.1 are located on the end faces of the retaining cover 5 and the bearing seat 9 before and after the pressure plate 7 is flipped over.

[0040] It should also be noted that the pressure plate assembly of this solution needs to be assembled with the bearing when the bearing product is packaged, transported and sent to the user. The pressure plate assembly does not need to be disassembled after transportation and packaging are completed.

[0041] The method of loading and unloading a cylindrical roller bearing with a fixed pressure plate in a wind turbine jacket as above is:

[0042] When the finished bearing needs to be packaged and transported, select any four bolt holes 6 on the cage cover 5 and fix each pressure plate 7 to the cage cover 5 in sequence with the fixing bolts 8, so that the pressure plate 7 limits the flat retaining ring 2, thereby completing the installation of the pressure plate 7;

[0043] The state of the pressure plate 7 on the bearing retainer cover 5 after the pressure plate 7 is installed is that the narrow side 7.3 of the pressure plate is pressed on the flat retaining ring 2 in the direction of the outer diameter of the bearing;

[0044] When the bearing needs to be used on the machine, the bearing with the pressure plate 7 installed is fixedly mounted on the equipment shaft and embedded in the bearing seat 9; at this time, the fixing bolts 8 of the first pressure plate assembly are loosened, and then the pressure plate 7 is rotated 180° clockwise or counterclockwise, and then the fixing bolts 8 are tightened to fix the pressure plate 7 on the end face of the bearing seat 9 to achieve the positioning of the pressure plate 7 on the bearing; after completing the position conversion of the first pressure plate 7, the position conversion of the second pressure plate 7 is carried out according to the above operation, and so on, and finally the disassembly and conversion of the four pressure plate assemblies are gradually completed;

[0045] After the position of each pressure plate 7 is converted, the narrow side 7.3 area of the pressure plate is pressed on the flat retaining ring 2 toward the inner diameter direction of the bearing; the conversion of each pressure plate 7 is carried out one by one in a gradual relay, because after the position of the first pressure plate 7 is converted, the pressure plate 7 is separated from the fixation of the retaining frame cover 5 and the position restriction of the flat retaining ring 2 is separated here, but the bearing can still be fixed by the remaining pressure plates 7 still fixed on the retaining frame cover 5; when the conversion and fixation of the previous pressure plate 7 is completed, the next conversion is carried out, that is, the bearing is always kept fixed on the bearing seat 9 to prevent the gap between the bearing and the bearing seat 9 from causing uneven force on the bearing.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0048] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0049] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0050] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

Claims

1. A cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket, characterized in that: include: The outer ring, the flat retaining ring, the inner ring, the pressure plate assembly, a number of cylindrical rollers and a cage, the cage comprising a cage seat and a cage cover, a number of cage beams are evenly arranged on one side of the cage seat, and pockets corresponding to a number of rollers are provided between each two adjacent cage beams, a cage cover is provided on the cage seat and forms a complete cage with the cage cover; bolt holes are evenly arranged on the cage cover corresponding to each cage beam position, and the cage cover is connected to the cage seat through a number of bolts; the outer ring is a single rib structure, and a flat retaining ring is provided on the outer ring end face opposite to the single rib position, and a roller shoulder is formed at the inner diameter end of the flat retaining ring, and the surface where the outer diameter is located is flush with the outer circumferential surface of the outer ring; the several cylindrical rollers are all rolled between the outer ring raceway and the inner ring raceway; a pressure plate assembly is provided at any bolt hole position on the outer end face of the cage cover, one end edge of the pressure plate assembly covers the cage cover area, and the other end edge extends toward the flat retaining ring and at least covers the inner diameter edge of the flat retaining ring.

2. A cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket according to claim 1, characterized in that: The number of the pressure plate assemblies is set to 3-4, and they are evenly distributed on the retaining frame cover along the circumference of the bearing.

3. The cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket according to claim 1, characterized in that: The pressure plate assembly includes: a pressure plate and a matching fixing bolt; a pressure plate bolt hole identical to the retaining frame cover bolt hole is opened on the pressure plate, and the pressure plate passes through the pressure plate bolt hole from the outside of the pressure plate and is screwed into the bolt hole on the retaining frame cover through the fixing bolt, thereby fixing the pressure plate to the retaining frame cover.

4. The cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket according to claim 3, characterized in that: The pressure plate is an isosceles trapezoidal structure that is narrow at the top and wide at the bottom. The lower wide side faces the inner ring and the edge covers the inner diameter edge of the retaining frame cover. The upper narrow side faces the flat retaining ring and the narrow edge extends beyond the inner diameter edge of the flat retaining ring and is close to half the width of the end face of the flat retaining ring; in this way, the flat retaining ring is blocked and limited by the upper narrow side area of the pressure plate.

5. The cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket according to claim 4, characterized in that: The bolt holes on the pressure plate are located towards the lower wide side area of the pressure plate.

6. The cylindrical roller bearing with a fixed pressure plate for a wind turbine jacket according to claim 3, characterized in that: The flat retaining ring is positioned by converting the installation position of the pressure plate and fixing it to the bearing seat.

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