Gear box of wind turbine generator

Abstract

The utility model relates to the technical field of fan equipment, in particular to a wind turbine generator gear box which comprises a base and a gear box body, the gear box body is installed in the center of the base, supporting plates are fixedly connected to the two sides of the gear box body, a damping device is installed on the other sides of the supporting plates, guide plates are fixedly connected to the two sides in a damping frame, and the guide plates are fixedly connected to the two sides in the damping frame. A supporting plate is slidably connected to the center of the guide plate, telescopic sleeves are fixedly connected to the two end faces of the supporting plate, an extrusion plate is fixedly connected to the other ends of the telescopic sleeves, a sliding rod is fixedly connected to the other end of the extrusion plate, and a sliding plate is fixedly connected to the other end of the sliding rod. One end of the gear box is in a suspended state, when the vertical movement of the gear box is caused by nodding of the impeller, one end of the gear box can slightly swing up and down, a gear box shell is not prone to being damaged, and the normal service life of the gear box is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan equipment technical field, concretely is a kind of wind turbine gearbox. BACKGROUND

[0002] The wind turbine of fan will be with aerodynamic action and mechanical friction and other reasons in the operation process, vibration and noise are generated, seriously affect its stable operation, can reduce service life, in order to reduce vibration and noise, need to introduce the device of elastic support between generator set and tower drum, elastic support is generally made of polyurethane rubber elastomer etc., in the power generation process of wind turbine, these elastic supports can absorb part of energy, and the remaining energy is gradually dissipated to the outside through movement, but the traditional elastic support design has certain limitation, the vertical movement of gear box is largely caused by the nodding of impeller, this can generate constraint force to gear box shell, when considering assembly tolerance, these constraint forces can reach thousands of newton, greatly shorten the life of gearbox and can be damaged, therefore, aiming at the above problems, a kind of wind turbine gearbox is provided. SUMMARY

[0003] The utility model aims at providing a kind of wind turbine gearbox to solve the problems raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] As an optional scheme of the utility model, the wind turbine gearbox includes a base and a gear box,

[0006] The central part of the base is provided with the gear box, and the two sides of the gear box are fixedly connected with support plates.

[0007] The damping device includes a damping frame, a guide plate and a hydraulic cavity, the outer side of the damping frame is fixedly connected with the base, the two sides of the damping frame are fixedly connected with guide plates inside, the central part of the guide plate is slidably connected with a support plate, the two end faces of the support plate are fixedly connected with telescopic sleeves, the other end of the telescopic sleeve is fixedly connected with a pressing plate, the other end of the pressing plate is fixedly connected with a sliding rod, the other end of the sliding rod is fixedly connected with a sliding plate, and the outer side of the sliding plate is slidably connected with the inner wall of the hydraulic cavity.

[0008] The outer side of the hydraulic cavity is communicated with a communication pipe.

[0009] As an optional scheme of the utility model, the outer side of the sliding rod is slidably connected with a sealing ring, and the outer side of the sealing ring is fixedly connected with the hydraulic cavity.

[0010] As an optional scheme of the wind turbine gearbox, the other side of the sliding plate is fixedly connected with a sealing plate.

[0011] As an optional scheme of the wind turbine gearbox, the number of the communication pipes is two groups, and the communication pipes are cross-connected with the hydraulic cavities.

[0012] The wind turbine will generate vibration and noise in the running process due to air power action and mechanical friction, which seriously affects the stable operation and reduces the service life. In order to reduce the vibration and noise, an elastic support device needs to be introduced between the generator set and the tower drum. The elastic support is generally made of polyurethane rubber elastomer and the like. In the process of power generation of the wind turbine, the elastic support can absorb part of the energy and gradually dissipate the remaining energy to the outside through movement. However, the traditional elastic support design has certain limitations. The vertical movement of the gearbox is largely caused by the nodding of the impeller, which will generate a constraint force on the gearbox shell. When the assembly tolerance is considered, the constraint force can reach thousands of newtons, which greatly shortens the service life of the gearbox and causes damage. The device is provided with a base on both sides of the gearbox, and one end of the gearbox is in a suspended state. When the vertical movement of the gearbox is caused by the nodding of the impeller, the one end of the gearbox can slightly swing up and down. At this time, the constraint force on the gearbox is greatly weakened, and the gearbox shell is not easily damaged. When the support plate vibrates, the support plate drives the extrusion plate to move under the action of the telescopic sleeve, the spring and the rubber damping block. At this time, the extrusion plate can extrude the sliding rod to move, and under the action of the sliding plate and the sealing plate, the hydraulic oil in the low hydraulic cavity can slowly enter the high hydraulic cavity on the other side. When reset, the hydraulic oil in the high hydraulic cavity can slowly enter the low hydraulic cavity on the other side, achieving the purpose of effective vibration reduction.

[0013] As an optional scheme of the wind turbine gearbox, the inside of the telescopic sleeve is provided with a rubber damping block and a spring. The outside of the rubber damping block is fixedly connected with the extrusion plate. One end of the spring is fixedly connected with the extrusion plate, and the other end of the spring is communicated with the support plate.

[0014] As an optional scheme of the wind turbine gearbox, recesses are formed in the two sides of the extrusion plate, and the extrusion plate is slidably connected with the guide plate through the recesses.

[0015] The grooves of the extrusion plates are in sliding connection with the guide plates, so that the stable sliding of the extrusion plates can be ensured, the guide plates can guide the extrusion plates and the supporting plates, and the setting of the telescopic sleeves can avoid the entry of external impurities into the interior to affect the damping effect.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a gear box's both sides are provided with base, and the gear box one end is in the state of suspension, and the nodding of the impeller causes the vertical motion of the gear box, and the gear box one end can swing slightly up and down, and gear box shell is not easy to cause damage, and when the gear box drives the supporting plate to vibrate, the supporting plate drives the extrusion plate to move under the action of telescopic sleeve, spring and rubber damping block, the extrusion plate can extrude the sliding rod to move under the action of sliding plate and sealing plate, and the hydraulic oil in the low hydraulic cavity can slowly enter the high hydraulic cavity on the other side, and when resetting, the hydraulic oil in the high hydraulic cavity can slowly enter the low hydraulic cavity on the other side, and the purpose of effective damping is realized.

[0018] And the grooves of the extrusion plates are in sliding connection with the guide plates, so that the stable sliding of the extrusion plates can be ensured, the guide plates can guide the extrusion plates and the supporting plates, and the setting of the telescopic sleeves can avoid the entry of external impurities into the interior to affect the damping effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the structure schematic view of the utility model damping device;

[0021] Figure 3 It is the section view of the utility model hydraulic cavity;

[0022] Figure 4 It is the section view of the utility model telescopic sleeve.

[0023] In the drawing: 1, base;2, gear box;3, supporting plate;4, damping device;401, damping frame;402, guide plate;403, hydraulic cavity;404, communication pipe;405, telescopic sleeve;406, extrusion plate;407, sliding rod;408, sealing ring;409, sliding plate;410, sealing plate;411, rubber damping block;412, spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0025] Embodiment 1

[0026] Please refer to Figure 1 、 Figure 2 and Figure 3 , the present application provides a technical solution:

[0027] A wind turbine gearbox, comprising a base 1 and a gearbox 2,

[0028] The central part of the above-mentioned base 1 is provided with the gearbox 2, the two sides of the above-mentioned gearbox 2 are fixedly connected with support plates 3, the other side of the above-mentioned support plate 3 is provided with a damping device 4, the outer side of the above-mentioned damping device 4 is fixedly connected with the base 1;

[0029] The above-mentioned damping device 4 comprises a damping frame 401, a guide plate 402 and a hydraulic cavity 403, the outer side of the above-mentioned damping frame 401 is fixedly connected with the base 1, the two sides of the inside of the above-mentioned damping frame 401 are fixedly connected with the guide plate 402, the central part of the above-mentioned guide plate 402 is slidingly connected with the support plate 3, the two end faces of the above-mentioned support plate 3 are fixedly connected with telescopic sleeves 405, the other end of the above-mentioned telescopic sleeve 405 is fixedly connected with extrusion plates 406, the other end of the above-mentioned extrusion plate 406 is fixedly connected with sliding rods 407, the other end of the above-mentioned sliding rod 407 is fixedly connected with sliding plates 409, the outer side of the above-mentioned sliding plate 409 is slidingly connected with the inner wall of the hydraulic cavity 403;

[0030] The outer side of the above-mentioned hydraulic cavity 403 is communicated with communication pipes 404.

[0031] The outer side of the above-mentioned sliding rod 407 is slidingly connected with a sealing ring 408, the outer side of the above-mentioned sealing ring 408 is fixedly connected with the hydraulic cavity 403.

[0032] The other side of the above-mentioned sliding plate 409 is fixedly connected with a sealing plate 410.

[0033] The number of the above-mentioned communication pipes 404 is two groups, the above-mentioned communication pipes 404 are cross-communicated with the hydraulic cavity 403.

[0034] The wind turbine of the fan will produce vibration and noise in the running process due to the action of air power and mechanical friction and other reasons, which seriously affects its stable operation and can reduce the service life. In order to reduce vibration and noise, an elastic support device needs to be introduced between the generator set and the tower drum. The elastic support is generally made of polyurethane rubber elastomer and other materials. During the power generation process of the wind turbine generator set, these elastic supports will absorb part of the energy and gradually dissipate the remaining energy to the outside through movement. However, the traditional elastic support design has certain limitations. The vertical movement of the gear box is largely caused by the nodding of the impeller, which will generate a constraint force on the gear box shell. When the assembly tolerance is considered, these constraint forces can reach several gigapascals, greatly shortening the life of the gearbox and causing damage. The device is provided with a base 1 on both sides of the gear box 2, and one end of the gear box 2 is in a suspended state. When the vertical movement of the gear box 2 is caused by the nodding of the impeller, the one end of the gear box 2 can slightly swing up and down, which greatly weakens the constraint force on the gear box 2. At this time, it is not easy to cause damage to the gear box 2 shell. When the gear box 2 drives the support plate 3 to vibrate, the support plate 3 drives the extrusion plate 406 to move under the action of the telescopic sleeve pipe 405, the spring 412 and the rubber damping block 411. At this time, the extrusion plate 406 can extrude the sliding rod 407 to move, and under the action of the sliding plate 407 and the sealing plate 410, the hydraulic oil in the lower hydraulic cavity 403 can slowly enter the high hydraulic cavity 403 on the other side. When resetting, the hydraulic oil in the high hydraulic cavity 403 can slowly enter the lower hydraulic cavity 403 on the other side, achieving the purpose of effective damping.

[0035] Example 2

[0036] This embodiment is an improvement on example 1. Please refer to Figure 4 , specifically, the inside of the telescopic sleeve pipe 405 is provided with a rubber damping block 411 and a spring 412. The outside of the rubber damping block 411 is fixedly connected with the extrusion plate 406. One end of the spring 412 is fixedly connected with the extrusion plate 406. The other end of the spring 412 is in communication with the support plate 3.

[0037] The two sides of the extrusion plate 406 are provided with grooves, and the extrusion plate 406 is slidably connected with the guide plate 402 through the grooves.

[0038] The grooves on both sides of the extrusion plate 406 are slidably connected with the guide plate 402, which can ensure the stable sliding of the extrusion plate 406. The guide plate 402 plays a guiding role for the extrusion plate 406 and the support plate 3. At the same time, the telescopic sleeve pipe 405 can avoid the entry of external impurities into the inside to affect the damping effect. The rubber damping block 411 and the spring 412 have double damping effect and good damping effect.

[0039] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0040] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine gearbox, characterized in that: It comprises a base (1) and a gearbox (2), The gearbox (2) is mounted in the center of the base (1), and the support plates (3) are fixedly connected to the two sides of the gearbox (2), the damping devices (4) are mounted on the other side of the support plates (3), and the outer side of the damping devices (4) is fixedly connected with the base (1); The damping device (4) comprises a damping frame (401), a guide plate (402) and a hydraulic cavity (403), the outer side of the damping frame (401) is fixedly connected with the base (1), the guide plates (402) are fixedly connected to the inner sides of the damping frame (401), the support plates (3) are slidingly connected to the center of the guide plates (402), the telescopic sleeves (405) are fixedly connected to the two end faces of the support plates (3), the extrusion plates (406) are fixedly connected to the other ends of the telescopic sleeves (405), the sliding rods (407) are fixedly connected to the other ends of the extrusion plates (406), the sliding plates (409) are fixedly connected to the other ends of the sliding rods (407), and the outer side of the sliding plates (409) is slidingly connected with the inner wall of the hydraulic cavity (403); The outer side of the hydraulic cavity (403) is communicated with the communication pipes (404).

2. A wind turbine gearbox according to claim 1, characterised in that: The outer side of the sliding rod (407) is slidingly connected with the sealing ring (408), and the outer side of the sealing ring (408) is fixedly connected with the hydraulic cavity (403).

3. A wind turbine gearbox according to claim 1, characterized in that: The other side of the sliding plate (409) is fixedly connected with the sealing plate (410).

4. A wind turbine gearbox according to claim 1, characterized in that: The number of the communication pipes (404) is two groups, and the communication pipes (404) are cross-communicated with the hydraulic cavity (403).

5. A wind turbine gearbox according to claim 1, characterized in that: The telescopic sleeves (405) are provided with rubber damping blocks (411) and springs (412) inside, the outer side of the rubber damping blocks (411) is fixedly connected with the extrusion plates (406), one end of the springs (412) is fixedly connected with the extrusion plates (406), and the other end of the springs (412) is communicated with the support plates (3).

6. A wind turbine gearbox according to claim 1, characterized in that: The two sides of the extrusion plates (406) are provided with grooves, and the extrusion plates (406) are slidingly connected with the guide plates (402) through the grooves.

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