Vibration reduction mounting seat and wind power generation equipment

Abstract

The utility model discloses a vibration reduction mounting seat and wind power generation equipment, and the vibration reduction mounting seat comprises a base which is provided with a mounting hole for the bottom end of a tower drum to be embedded; the mounting plate is connected with the tower drum, and the mounting plate is arranged above the base; an elastic piece is arranged between the base and the mounting plate; the locking structures are arranged around the circumference at intervals; the locking structure is used for connecting the base and the mounting plate; the first fixing structure comprises a first clamp and a reinforcing rod, the first clamp is mounted on the tower drum, and the reinforcing rod is connected with the first clamp and the mounting plate; the first hoop is arranged above the mounting plate, and the reinforcing rod is obliquely arranged; and the buffering assembly is arranged on the tower drum in a sleeving mode, the periphery of the tower drum is sleeved with the buffering assembly, and the buffering assembly is installed in the first clamping hoop. The vibration reduction mounting seat can effectively reduce tower drum vibration, improve the reliability of a unit and prolong the service life of equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation equipment technical field, especially a kind of damping mounting seat and wind power generation equipment. BACKGROUND

[0002] During the operation of wind turbine, periodic aerodynamic load is generated under the action of turbulent wind or shear wind, and rotation imbalance is caused by uneven mass distribution of wind wheel or blade installation deviation, which will lead to front and rear or lateral vibration of tower drum. Tower drum vibration will trigger a series of chain reactions, which will have a serious impact on the overall operation of the unit. For example, vibration will be transmitted to the cabin interior, causing the core components such as gear box and generator to bear additional dynamic load, accelerating the wear of gear meshing surface and the fatigue damage of bearing; vibration will reduce the alignment accuracy of coupling, affecting the stability of transmission system; at the same time, continuous mechanical vibration may also cause problems such as loose generator winding and poor electrical connection. In terms of structure, vibration will cause micro-cracks in the tower drum weld and flange connection due to long-term alternating stress, and gradually expand; the connection between blade root and hub will also appear bolt pre-tightening force due to vibration, which may cause structural failure in severe cases. In addition, vibration will also affect the control accuracy of the unit, causing the yaw system and variable pitch system to respond slowly, further exacerbating the instability of operation. These mechanical damage and performance degradation caused by vibration will significantly reduce the reliability of the unit and greatly shorten the design service life of the equipment. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art. To this end, the utility model provides a damping mounting seat, which can effectively reduce the vibration of tower drum, thereby improving the reliability of the unit and prolonging the service life of the equipment.

[0004] The utility model further provides a wind power generation equipment with the above damping mounting seat.

[0005] According to the damping mounting seat of the first aspect embodiment of the utility model, comprising:

[0006] The base is provided with a mounting hole for embedding the bottom end of the tower drum;

[0007] The mounting plate is connected with the tower drum, and the mounting plate is arranged above the base; an elastic member is arranged between the base and the mounting plate;

[0008] A plurality of locking structures are arranged at intervals around the circumference; the locking structure is used for connecting the base and the mounting plate;

[0009] The first fixing structure comprises a first clamp and a reinforcing rod, the first clamp is installed on the tower drum, and the reinforcing rod connects the first clamp and the mounting plate; the first clamp is arranged above the mounting plate, and the reinforcing rod is arranged in an inclined manner.

[0010] The buffer assembly is sleeved on the tower drum and is installed in the first clamp.

[0011] According to the damping mounting seat provided by the first aspect of the present application, at least the following beneficial effects are achieved:

[0012] By installing the bottom of the tower drum in the mounting hole of the base and arranging the elastic member between the base and the mounting plate, the front-back or lateral vibration of the tower drum can be effectively reduced; by installing the buffer assembly in the first clamp, the hard contact between the tower drum and the first clamp can be avoided, and the service life of the equipment can be prolonged; the buffer assembly is installed above the mounting plate, and the first fixing structure is connected with the mounting plate, so that the tower drum can be damped at different heights, and the damping effect is further improved.

[0013] According to some embodiments of the present application, the inner diameter of the mounting hole increases in sequence along the vertical direction.

[0014] A first buffer gasket is installed in the mounting hole, the outer peripheral wall of the first buffer gasket is attached to the inner side wall of the mounting hole, and the bottom end of the tower drum is installed at the center of the first buffer gasket.

[0015] According to some embodiments of the present application, the locking structure comprises a locking screw rod and a locking nut, the locking screw rod passes through the mounting plate and the base to be connected with the locking nut.

[0016] The elastic member is sleeved on the locking screw rod.

[0017] According to some embodiments of the present application, the inner side wall of the first clamp is provided with a clamping groove, and the buffer assembly is installed in the clamping groove.

[0018] The first clamp is provided with a first joint, the buffer assembly comprises a second buffer gasket, the second buffer gasket is provided with a second joint, and the first joint and the second joint are arranged in a staggered manner.

[0019] According to some embodiments of the present application, the side wall of the clamping groove is provided with a first positioning structure protruding from the surface thereof, the buffer assembly is provided with a second positioning structure, and the first positioning structure and the second positioning structure are matched to limit the rotation of the buffer assembly relative to the first clamp.

[0020] According to some embodiments of the present invention, the buffer assembly further includes a third buffer washer, which is installed inside the second buffer washer;

[0021] The third buffer gasket has a third joint, which is offset from the first joint and the second joint.

[0022] According to some embodiments of the present invention, the outer peripheral wall of the third buffer washer is provided with an annular groove, and the inner side wall of the second buffer washer is provided with a retaining strip. The retaining strip is embedded in the annular groove to restrict the relative sliding of the second buffer washer and the third buffer washer in the vertical direction.

[0023] According to some embodiments of the present invention, the vibration damping mounting base further includes a second fixing structure, the second fixing structure including a second clamp and a cable, the second clamp being installed on the tower and positioned above the mounting plate, and the cable connecting the second clamp and the mounting plate.

[0024] According to some embodiments of the present invention, the second fixing structure includes multiple cables, which are arranged at intervals around the circumference;

[0025] And / or, the first fixing structure includes multiple reinforcing rods, which are spaced apart around the circumference.

[0026] The wind power generation equipment according to a second aspect embodiment of the present invention includes the aforementioned vibration damping mounting base. Since the wind power generation equipment includes the aforementioned vibration damping mounting base, it possesses at least all the beneficial effects of the vibration damping mounting base.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 This is a front view of the vibration damping mounting base according to the first aspect of this application;

[0030] Figure 2 for Figure 1 Assembly diagram of the first clamp and buffer assembly;

[0031] Figure 3 for Figure 2 A schematic diagram of the structure inside the first clamp.

[0032] Icon labels:

[0033] Base 100, mounting hole 110, first buffer washer 111;

[0034] Mounting plate 200, elastic element 210;

[0035] Locking structure 300, locking screw 310, locking nut 320;

[0036] First fixing structure 400, first clamp 410, clamp groove 411, first joint 412, first positioning structure 413, mounting groove 414, cover plate 415, reinforcing rod 420;

[0037] Buffer assembly 500, second buffer washer 510, second joint 511, second positioning structure 512, retaining strip 513, third buffer washer 520, third joint 521, third positioning structure 522, annular groove 523;

[0038] Second fixing structure 600, second clamp 610, cable 620;

[0039] Tower 700. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0043] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0044] Reference Figures 1 to 3The vibration damping mounting base according to a first aspect of this utility model includes a base 100, a mounting plate 200, and a locking structure 300. The base 100 is mounted on the ground and has mounting holes 110 for the bottom end of a tower 700 to be inserted into. The mounting plate 200 is connected to the tower 700, for example, by welding. The mounting plate 200 is positioned above the base 100, and an elastic element 210 is provided between the base 100 and the mounting plate 200. The base 100 and the mounting plate 200 are connected by the locking structure 300. Multiple locking structures 300 are provided, spaced apart around the circumference. The locking structure 300 is used to connect the base 100 and the mounting plate 200 to reduce the vibration of the tower 700 in all directions. (See reference...) Figure 1 As shown, the locking structure 300 includes a locking screw 310 and a locking nut 320. The locking screw 310 passes through the mounting plate 200 and the base 100 to connect with the locking nut 320. An elastic element 210 is sleeved on the locking screw 310. The elastic element 210 can be a spring or other structure.

[0045] To improve the fixing effect on the tower 700, refer to Figure 1 As shown, the inner diameter of the mounting hole 110 increases sequentially along the vertical direction, meaning the cross-sectional shape of the mounting hole 110 about a vertical plane is trapezoidal. A first buffer washer 111 is installed inside the mounting hole 110, with its outer peripheral wall fitting against the inner wall of the mounting hole 110. The bottom end of the tower 700 is installed at the center of the first buffer washer 111. The first buffer washer 111 is preferably made of rubber or similar material and is fitted onto the bottom of the tower 700. Through the first buffer washer 111 and mounting hole 110 in this embodiment, when the tower 700 experiences lateral vibration, the outer peripheral wall of the first buffer washer 111 abuts against the inner wall of the mounting hole 110. Furthermore, since the inner wall of the mounting hole 110 is inclined, the force exerted by the mounting hole 110 on the tower 700 will generate a large vertical component, thereby reducing damage to the tower 700 and extending the service life of the equipment.

[0046] Reference Figure 1As shown, the vibration damping mounting base in this embodiment also includes a first fixing structure 400, which includes a first clamp 410 and a reinforcing rod 420. The first clamp 410 is installed on the tower 700, and the reinforcing rod 420 connects the first clamp 410 and the mounting plate 200. The first clamp 410 is positioned above the mounting plate 200, and the reinforcing rod 420 is inclined. A buffer assembly 500 is installed inside the first clamp 410 and is fitted around the outer periphery of the tower 700. The buffer assembly 500 can be made of materials such as rubber. By installing the buffer assembly 500 inside the first clamp 410, hard contact between the tower 700 and the first clamp 410 can be avoided, which would affect the service life of the equipment. The buffer assembly 500 is installed above the mounting plate 200, and the first fixing structure 400 is connected to the mounting plate 200, enabling vibration damping of the tower 700 at different heights and further improving the vibration damping effect. The reinforcing rod 420 is preferably made of a rigid material, such as an alloy. The reinforcing rod 420 can be a telescopic rod to adjust the installation height of the first clamp 410, thus adapting to different heights and types of tower 700 structures. (Refer to...) Figure 2 , Figure 3 As shown, the first clamp 410 has mounting grooves 414 on its outer periphery for the insertion of reinforcing rods 420. Multiple mounting grooves 414 are provided, spaced apart around the circumference. Multiple reinforcing rods 420 are provided corresponding to the mounting grooves 414, with the top end of each reinforcing rod 420 inserted into one groove. These reinforcing rods are detachably connected to the first clamp 410 via fasteners, such as bolts. The detachable connection between the reinforcing rods 420 and the first clamp 410 facilitates the removal of the first clamp 410 and, consequently, the replacement of the buffer assembly 500 installed within it.

[0047] Reference Figure 1 As shown, the size of the first clamp 410 is smaller than that of the mounting plate 200. Therefore, the top of the reinforcing rod 420 extends towards the tower 700 to form an inclined state. The inclined setting of the reinforcing rod 420 can improve its shear resistance and extend its service life. The bottom end of the reinforcing rod 420 can be hinged to the mounting plate 200 or connected by fasteners.

[0048] In an embodiment of this utility model, the inner sidewall of the first clamp 410 is provided with a groove 411, and the buffer assembly 500 is installed in the groove 411; the buffer assembly 500 includes a second buffer washer 510 and a third buffer washer 520, the second buffer washer 510 is installed in the groove 411, and the third buffer washer 520 is installed in the second buffer washer 510. (See reference...) Figure 2 , Figure 3As shown, the first clamp 410 is composed of multiple clamp units spliced ​​together. Correspondingly, the second buffer washer 510 is composed of multiple second washer units spliced ​​together, and the third buffer washer 520 is composed of multiple third washer units spliced ​​together, to facilitate the installation of the first fixing structure 400 and the buffer assembly 500. The connection between adjacent clamp units forms a first joint 412, the connection between adjacent second washer units forms a second joint 511, and the connection between adjacent third washer units forms a third joint 521. Preferably, the first joint 412, the second joint 511, and the third joint 521 are staggered to ensure the consistency of the vibration reduction effect on the tower 700 in all directions.

[0049] It is conceivable that the buffer assembly 500 may only include the second buffer washer 510. However, it is preferable that the second buffer washer 510 is composed of multiple individual second washers spliced ​​together. The presence of the second joint 511 will cause the buffering effect of the second buffer washer 510 to deteriorate when the tower 700 comes into contact with the second joint 511. This problem can be effectively solved by adding a third buffer washer 520, thereby improving the consistency of the vibration reduction effect of the first fixed structure 400 on the tower 700 in all directions.

[0050] In an embodiment of this utility model, the sidewall of the slot 411 is provided with a first positioning structure 413 protruding from its surface, and the second buffer washer 510 of the buffer assembly 500 is provided with a second positioning structure 512. The first positioning structure 413 cooperates with the second positioning structure 512 to restrict the rotation of the second buffer washer 510 relative to the first clamp 410. Correspondingly, the third buffer washer 520 is provided with a third positioning structure 522, and the second positioning structure 512 cooperates with the third positioning structure 522 to restrict the rotation of the third buffer washer 520 relative to the second buffer washer 510. (Refer to...) Figure 2 As shown, the first positioning structure 413 is a first positioning block protruding from the inner wall of the slot 411, the third positioning structure 522 is a second positioning block protruding from the outer surface of the third buffer washer 520, and the second positioning structure 512 is a positioning groove disposed on the end face of the second buffer washer 510. Both the first positioning block and the second positioning block can be embedded in the positioning groove. The first positioning structure 413 and the second positioning structure 512 cooperate to also play the role of installing and positioning the second buffer washer 510, and the second positioning structure 512 and the third positioning structure 522 cooperate to also play the role of installing and positioning the third buffer washer 520.

[0051] Reference Figure 2As shown, to prevent the second buffer washer 510 and the third buffer washer 520 from sliding relative to each other in the vertical direction, the outer peripheral wall of the third buffer washer 520 in this embodiment is provided with an annular groove 523, and the inner side wall of the second buffer washer 510 is provided with a retaining strip 513, which is embedded in the annular groove 523. It is conceivable that the outer peripheral wall of the third buffer washer 520 could also be provided with a retaining strip 513, and the inner side wall of the second buffer washer 510 could be provided with an annular groove 523. The shape and size of the retaining strip 513 and the annular groove 523 are not limited and can be specifically set according to the actual situation.

[0052] In the embodiments of this utility model, reference is made to Figure 3 As shown, both ends of the first clamp 410 are equipped with a cover plate 415. The two cover plates 415 form opposite side walls of the groove 411. The cover plates 415 are made of flexible materials, such as plastic or rubber. The cover plates 415 are used to shield the buffer assembly 500 to prevent the buffer assembly 500 from being affected by rain, sun exposure, etc. The cover plates 415 are made of flexible materials to avoid hard contact with the outer surface of the tower 700.

[0053] Reference Figure 1 As shown, the vibration damping mounting base in this embodiment also includes a second fixing structure 600. The second fixing structure 600 includes a second clamp 610 and a cable 620. The second clamp 610 is installed on the tower 700 and positioned above the mounting plate 200. The cable 620 connects the second clamp 610 and the mounting plate 200. Specifically, the second fixing structure 600 includes multiple cables 620, which are spaced apart around the circumference. The second clamp 610 is positioned between the mounting plate 200 and the first clamp 410. The second fixing structure 600 further enhances the vibration damping capability of the tower 700. The second clamp 610 can be fixedly connected to the tower 700 or connected via fasteners, such as welding or bolts. The cable 620 is preferably connected to the locking structure 300, for example, the cable 620 can be connected to the locking screw 310, in order to simplify the equipment structure and reduce manufacturing costs.

[0054] The wind power generation equipment according to a second aspect of this utility model includes the aforementioned vibration damping mounting base. Since the wind power generation equipment includes the aforementioned vibration damping mounting base, it possesses at least all the beneficial effects of the vibration damping mounting base.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine the different embodiments or examples described in this specification.

[0056] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A vibration damping mounting base, characterized in that, include: The base is provided with mounting holes for the bottom end of the tower to be inserted; An installation plate is connected to the tower, and the installation plate is disposed above the base; an elastic element is provided between the base and the installation plate; Multiple locking structures are arranged at intervals around the circumference; the locking structures are used to connect the base and the mounting plate; The first fixing structure includes a first clamp and a reinforcing rod. The first clamp is installed on the tower, and the reinforcing rod connects the first clamp and the mounting plate. The first clamp is disposed above the mounting plate, and the reinforcing rod is disposed at an angle. A buffer assembly is fitted onto the outer periphery of the tower and installed inside the first clamp.

2. The vibration damping mounting base according to claim 1, characterized in that: Along the vertical direction, the inner diameter of the mounting holes increases sequentially; A first buffer washer is installed in the mounting hole, and the outer peripheral wall of the first buffer washer fits against the inner side wall of the mounting hole. The bottom end of the tower is installed at the center of the first buffer washer.

3. The vibration damping mounting base according to claim 1, characterized in that: The locking structure includes a locking screw and a locking nut, the locking screw passing through the mounting plate and the base to connect with the locking nut; The elastic element is sleeved on the locking screw.

4. The vibration damping mounting base according to claim 1, characterized in that: The inner wall of the first clamp is provided with a slot, and the buffer assembly is installed in the slot; The first clamp has a first joint, and the buffer assembly includes a second buffer washer, which has a second joint. The first joint and the second joint are staggered.

5. The vibration damping mounting base according to claim 4, characterized in that: The sidewall of the slot is provided with a first positioning structure protruding from its surface, and the buffer assembly is provided with a second positioning structure. The first positioning structure cooperates with the second positioning structure to restrict the buffer assembly from rotating relative to the first clamp.

6. The vibration damping mounting base according to claim 4, characterized in that: The buffer assembly further includes a third buffer washer, which is installed inside the second buffer washer; The third buffer washer has a third seam, which is offset from the first seam and the second seam.

7. The vibration damping mounting base according to claim 6, characterized in that: The outer peripheral wall of the third buffer washer is provided with an annular groove, and the inner side wall of the second buffer washer is provided with a retaining strip. The retaining strip is embedded in the annular groove to restrict the relative sliding of the second buffer washer and the third buffer washer in the vertical direction.

8. The vibration damping mounting base according to claim 1, characterized in that: The vibration damping mounting base also includes a second fixing structure, which includes a second clamp and a cable. The second clamp is installed on the tower and positioned above the mounting plate, and the cable connects the second clamp and the mounting plate.

9. The vibration damping mounting base according to claim 8, characterized in that: The second fixing structure includes multiple cables, which are arranged at intervals around the circumference; And / or, the first fixing structure includes a plurality of reinforcing rods, which are spaced apart around the circumference.

10. A wind power generation device, characterized in that: Includes the vibration damping mounting base as described in any one of claims 1 to 9.

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