Damping device of wind driven generator base

Abstract

The utility model discloses a wind driven generator base damping device which comprises an installation plate, an outer cylinder shell and an inner cylinder shell, an outer damper is fixedly installed on the upper surface of the installation plate, the outer cylinder shell is fixedly installed at the floating end of the outer damper, and the inner cylinder shell is installed in the outer cylinder shell in a sliding mode. An inner damper is fixedly installed on the inner top face of the outer barrel shell, the floating end of the inner damper abuts against the outer edge of the lower end of the inner barrel, the inner damper is sleeved with a spring, the upper end of the spring is attached to the inner top face of the outer barrel, and the lower end of the spring is attached to the outer edge of the lower end of the inner barrel shell. The outer barrel shell and the outer damper are combined to absorb and digest torsion of the downward pressing part, the inner damper is matched with the spring to absorb and digest torsion of the upward pulling part, the inner damper and the spring are matched with each other, torque and vibration in the base swinging process are effectively eliminated and relieved, and therefore the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine generators, in particular to a wind turbine generator seat damping device. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. A wind turbine generally consists of components such as a wind wheel, a generator, a direction regulator, a tower, a speed limit safety mechanism and an energy storage device.

[0003] Wind turbines require a base for installation support, but the current wind turbine base has poor compressive resistance and is difficult to effectively reduce vibrations at the bottom of the wind turbine. As a result, vibrations during operation can easily cause damage to wind turbine components.

[0004] Therefore, it is necessary to design a wind turbine generator base shock absorbing device. Utility Model Content

[0005] The utility model aims to provide a wind turbine generator base shock absorbing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a wind turbine base shock absorbing device, comprising a mounting plate, an outer cylinder shell and an inner cylinder shell, an outer damper is fixedly mounted on the upper surface of the mounting plate, the outer cylinder shell is fixedly mounted on the floating end of the outer damper, the inner cylinder shell is slidably mounted in the outer cylinder shell, an inner damper is fixedly mounted on the inner top surface of the outer cylinder shell, the floating end of the inner damper is pressed against the outer edge of the lower end of the inner cylinder, the inner damper is sleeved with a spring, the upper end of the spring is in contact with the inner top surface of the outer cylinder, and the lower end of the spring is in contact with the outer edge of the lower end of the inner cylinder shell.

[0007] According to the above technical solution, the mounting plate includes a base plate, the outer circumference of the base plate is provided with evenly distributed anchor holes, the inner side of the base plate is provided with circumferentially evenly distributed damper mounting holes, the damper mounting holes are through holes, and the center of the circle where the damper mounting holes are located is located on the axis of the outer cylinder shell.

[0008] According to the above technical solution, the inner cylinder shell includes a combination cylinder, an upper limit ring shell is fixedly installed on the middle outer periphery of the combination cylinder, a lower limit ring shell is fixedly installed on the lower end outer periphery of the combination cylinder, and the upper surface of the lower limit ring shell is welded with circumferentially distributed limit pins, the lower end of the spring is fitted with the limit pin, and the floating end of the internal damper presses against the upper end surface of the limit pin.

[0009] According to the above technical solution, a combination screw is threaded into the damper mounting hole, and the combination screw fixes the lower end of the external damper.

[0010] According to the above technical solution, the outer circumference of the outer cylinder shell is integrally formed with evenly distributed buckle caps, the number of which is the same as the number of the external dampers, and they are assembled and buckled one by one.

[0011] According to the above technical solution, a plurality of groups of circumferentially distributed beam and plate holes are provided on the top surface of the combined tube.

[0012] According to the above technical solution, the bottom plate is provided with a slide rod mounting hole, a limit slide rod is fixedly installed in the slide rod mounting hole, a slide cylinder is welded on the inner wall of the outer cylinder shell, the upper end of the limit slide rod cooperates with the slide cylinder, and the upper end of the limit slide rod is limited by a nut combination.

[0013] Compared with the prior art, the beneficial effect achieved by the utility model is that the downward pressing part of the torque is absorbed and eliminated by the combination of the outer cylinder shell and the external damper, and the internal damper cooperates with the spring to absorb and eliminate the upward pulling part of the torque. The two cooperate with each other to effectively eliminate and reduce the torque and vibration during the swinging process of the base, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the utility model from one viewing angle;

[0016] Figure 2 It is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 3 This is a three-dimensional structural schematic diagram of the mounting plate of the utility model from one viewing angle;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the inner cylinder shell of the utility model from one viewing angle.

[0019] In the figure: 1, mounting plate, 101, bottom plate, 102, damper mounting hole, 103, anchor hole, 104, slide rod mounting hole, 2, outer cylinder shell, 3, inner cylinder shell, 301, combination cylinder, 302, lower limit ring shell, 303, upper limit ring shell, 304, limit pin, 4, outer damper, 5, inner damper, 6, spring, 7, buckle cap, 8, combination screw, 9, limit slide rod, 10, slide cylinder. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a wind turbine base shock absorbing device, comprising a mounting plate 1, an outer cylinder shell 2 and an inner cylinder shell 3, an outer damper 4 is fixedly mounted on the upper surface of the mounting plate 1, the outer cylinder shell 2 is fixedly mounted on the floating end of the outer damper 4, the inner cylinder shell 3 is slidably mounted in the outer cylinder shell 2, an inner damper 5 is fixedly mounted on the inner top surface of the outer cylinder shell 2, the floating end of the inner damper 5 is pressed against the outer edge of the lower end of the inner cylinder, the inner damper 5 is sleeved with a spring 6, the upper end of the spring 6 is in contact with the inner top surface of the outer cylinder, and the lower end of the spring 6 is in contact with the outer edge of the lower end of the inner cylinder shell 3.

[0022] The mounting plate 1 is a combined mounting structure of the device and the foundation, and also provides a mounting base for the upper structure. The outer cylinder shell 2 and the inner cylinder shell 3 are slidably combined with each other to form an adjustable structure. The outer damper 4 absorbs and eliminates the downward pressure of the outer cylinder shell 2. The inner damper 5 and the spring 6 cooperate with each other to absorb and eliminate the upward pulling force of the inner cylinder shell 3. The upper end of the inner cylinder shell 3 is combined and installed with the generator base.

[0023] Specifically, the mounting plate 1 includes a base plate 101, the outer circumference of the base plate 101 is provided with evenly distributed anchor holes 103, the inner side of the base plate 101 is provided with circumferentially evenly distributed damper mounting holes 102, the damper mounting holes 102 are through holes, and the center of the circle where the damper mounting holes 102 are located is located on the axis of the outer cylinder shell 2.

[0024] The bottom plate 101 is effectively fixed and installed by providing the anchoring holes 103, while the damper installation holes 102 effectively limit the external damper 4 to avoid the generation of lateral torque to cause displacement deflection, which would reduce or even make the subsequent shock absorption effect ineffective.

[0025] Specifically, the inner cylinder shell 3 includes a combination cylinder 301, an upper limit ring shell 303 is fixedly installed on the middle outer periphery of the combination cylinder 301, a lower limit ring shell 302 is fixedly installed on the lower end outer periphery of the combination cylinder 301, and the upper surface of the lower limit ring shell 302 is welded with circumferentially distributed limit pins 304, the lower end of the spring 6 is fitted with the limit pin 304, and the floating end of the internal damper 5 presses against the upper end surface of the limit pin 304.

[0026] The combination tube 301 is the basic structure of the inner tube shell 3, the upper limit ring shell 303 limits the downward movement of the combination tube 301, and the lower limit ring shell 302 limits the upward movement of the combination tube 301. At the same time, it provides an installation basis for the inner damper 5, that is, the spring 6. The setting of the limit pin 304 stabilizes the lower end of the spring 6 to avoid deviation.

[0027] Specifically, a combination screw 8 is threadedly installed in the damper mounting hole 102 , and the combination screw 8 fixes the lower end of the external damper 4 .

[0028] The combined screws 8 are used to effectively assist in fixing the installation of the external damper 4 , thereby ensuring the working stability of the external damper 4 .

[0029] Specifically, the outer circumference of the outer cylinder shell 2 is integrally formed with evenly distributed buckle caps 7, the number of the buckle caps 7 is the same as the number of the outer dampers 4, and they are assembled and buckled one by one.

[0030] The buckle cap 7 can better combine the outer cylinder shell 2 and the damper to ensure stability in use.

[0031] Specifically, the top surface of the combined tube 301 is provided with a plurality of groups of beam and plate holes distributed circumferentially.

[0032] By opening beam and plate holes on the upper surface of the combined tube 301, the wind turbine generator base can be better assembled and installed.

[0033] Specifically, the bottom plate 101 is provided with a slide rod mounting hole 104, in which a limiting slide rod 9 is fixedly installed, a slide cylinder 10 is welded to the inner wall of the outer cylinder shell 2, the upper end of the limiting slide rod 9 cooperates with the slide cylinder 10, and the upper end of the limiting slide rod 9 is limited by a nut combination.

[0034] By opening a slide rod installation hole 104 on the bottom plate 101, the limit slide rod 9 is effectively fixed and installed, and the limit slide rod 9 cooperates with the slide cylinder 10 and the nut to realize the upward limit of the outer cylinder shell 2, avoiding synchronous upward movement and causing pulling damage to the external damper 4.

[0035] Working principle: When in use, after the device is effectively assembled and installed, the swing torque generated by the wind turbine base during operation causes it to stretch or press down the inner cylinder shell 3. During the pressing process, the load is transmitted to the outer cylinder shell 2 through the inner cylinder shell 3 and the upper limit ring shell 303 thereon, and then dissipated and absorbed by the external damper 4. During the pulling process, the load is transmitted to the inner damper 5 and the spring 6 through the inner cylinder shell 3 and the lower limit ring shell 302 thereon, and is dissipated and absorbed by the inner damper 5 and the spring 6, thereby reducing the shock of the wind turbine base.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wind turbine generator base vibration reduction device, comprising a mounting plate (1), an outer cylinder shell (2) and an inner cylinder shell (3), characterized in that: An external damper (4) is fixedly mounted on the upper surface of the mounting plate (1); the outer cylinder shell (2) is fixedly mounted on the floating end of the external damper (4); the inner cylinder shell (3) is slidably mounted in the outer cylinder shell (2); an internal damper (5) is fixedly mounted on the inner top surface of the outer cylinder shell (2); the floating end of the internal damper (5) is in contact with the outer edge of the lower end of the inner cylinder; the internal damper (5) is provided with a spring (6); the upper end of the spring (6) is in contact with the inner top surface of the outer cylinder; and the lower end of the spring (6) is in contact with the outer edge of the lower end of the inner cylinder shell (3).

2. A wind turbine generator base shock absorbing device according to claim 1, characterized in that: The mounting plate (1) comprises a bottom plate (101), the outer circumference of the bottom plate (101) is provided with evenly distributed anchor holes (103), the inner side of the bottom plate (101) is provided with evenly distributed damper mounting holes (102) on the circumference, the damper mounting holes (102) are through holes, and the center of the circle where the damper mounting holes (102) are located is located on the axis of the outer cylindrical shell (2).

3. A wind turbine generator base shock absorbing device according to claim 1, characterized in that: The inner cylinder shell (3) comprises a combined cylinder (301), an upper limit ring shell (303) is fixedly installed on the outer periphery of the middle part of the combined cylinder (301), a lower limit ring shell (302) is fixedly installed on the outer periphery of the lower end of the combined cylinder (301), and the upper surface of the lower limit ring shell (302) is welded with circumferentially distributed limit pins (304), the lower end of the spring (6) is sleeved with the limit pin (304), and the floating end of the inner damper (5) is pressed against the upper end surface of the limit pin (304).

4. A wind turbine generator base vibration reduction device according to claim 2, characterized in that: The damper mounting hole (102) is internally threaded with a combination screw (8), and the combination screw (8) fixes the lower end of the external damper (4).

5. A wind turbine generator base vibration reduction device according to claim 1, characterized in that: The outer circumference of the outer cylindrical shell (2) is integrally formed with evenly distributed buckle caps (7), the number of which is the same as the number of the outer dampers (4), and they are assembled and buckled one by one.

6. A wind turbine generator base vibration reduction device according to claim 3, characterized in that: The top surface of the combined cylinder (301) is provided with a plurality of groups of beam and plate holes distributed circumferentially.

7. A wind turbine generator base vibration reduction device according to claim 2, characterized in that: The bottom plate (101) is provided with a slide rod mounting hole (104), a limit slide rod (9) is fixedly mounted in the slide rod mounting hole (104), a slide cylinder (10) is welded to the inner wall of the outer cylinder shell (2), the upper end of the limit slide rod (9) cooperates with the slide cylinder (10), and the upper end of the limit slide rod (9) is limited by a nut assembly.

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