Tower drum mounting base of wind generating set

Abstract

The invention relates to the technical field of wind power generation equipment, in particular to a wind generating set tower mounting base which comprises a body, a connecting buffer assembly is arranged at the top of the body, and a pre-stressed anchor bolt assembly is arranged at the bottom of the body; the base body is made of Q345D low-alloy high-strength steel, the structural strength is high, the anti-fatigue performance is good, the multi-stage buffer gasket is arranged between the boss and the tower bottom flange, the upper stainless steel plate, the middle nitrile rubber plate and the lower aluminum alloy plate are formed in a composite mode through the vulcanization technology, and the anti-fatigue performance is good. Vibration of the tower barrel and wind impact force can be effectively absorbed, abrasion of the connecting position is reduced, the problem that an existing base is insufficient in buffering is solved, the service life of equipment is prolonged, and four evenly-distributed bolts are adopted for connecting the boss and a flange at the bottom of the tower barrel to be balanced in stress.

Description

Technical Field

[0001] This invention relates to the field of wind power generation equipment technology, specifically to a wind turbine tower mounting base. Background Technology

[0002] Wind turbine generators are the core equipment that converts wind energy into electrical energy. The tower, as the supporting structure of the wind turbine generator, directly affects the operational safety and service life of the unit due to its installation stability.

[0003] Existing mounting bases mostly use simple flange connection structures, which have poor buffering performance and are difficult to absorb the vibration and impact force generated by the tower under wind. Long-term use can easily lead to wear and loosening at the connection between the base and the tower. At the same time, the connection between the base and the ground foundation is not reliable enough and may be displaced by the external environment, further reducing the operational stability of the wind turbine generator and posing safety hazards. Therefore, a wind turbine generator tower mounting base is needed to improve the above problems. Summary of the Invention

[0004] To address the problems mentioned above, which are often found in existing mounting bases that use simple flange connections with poor buffering performance, making it difficult to absorb the vibrations and impacts generated by the wind turbine tower, and which can lead to wear and loosening at the connection between the base and the tower over long-term use, as well as insufficient reliability in the connection between the base and the ground foundation, which may result in displacement due to external environmental influences, further reducing the operational stability of the wind turbine generator set and posing safety hazards, this invention aims to provide a wind turbine generator set tower mounting base to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A wind turbine generator tower mounting base includes a main body, a connecting buffer assembly is provided on the top of the main body, and a prestressed anchor bolt assembly is provided on the bottom of the main body;

[0007] The main body includes a base body, the top of which is fixedly connected to a boss, and the interior of the base body has a second through hole.

[0008] The connecting buffer assembly includes a tower bottom flange, a third through hole is provided inside the tower bottom flange, a bolt is provided inside the third through hole, and a multi-stage buffer gasket is provided between the boss and the tower bottom flange.

[0009] As a preferred embodiment of the present invention, the base body is a disc-shaped structure, and the material is Q345D low alloy high strength steel.

[0010] As a preferred embodiment of the present invention, the multi-level buffer gasket consists of three layers: the upper layer is a stainless steel plate, the middle layer is nitrile rubber, and the lower layer is an aluminum alloy plate, which are composite molded by a vulcanization process.

[0011] As a preferred embodiment of the present invention, four third through holes are provided, four bolts are provided, and the boss and the bottom flange of the tower are connected by bolts.

[0012] As a preferred embodiment of the present invention, the top of the boss is provided with a first through hole, and there are four first through holes, through which the bolt passes.

[0013] As a preferred embodiment of the present invention, the prestressed anchor bolt assembly includes a concrete slab, the interior of which is provided with a recessed hole, and the second through hole corresponds to the position of the recessed hole.

[0014] As a preferred embodiment of the present invention, an anchor bolt body is provided inside the recessed hole, an anchor plate is provided at the bottom of the anchor bolt body, and an anti-loosening nut is threadedly connected to the bottom of the anchor bolt body.

[0015] As a preferred embodiment of the present invention, four anchor bolt bodies, anchor plates, and anti-loosening nuts are provided.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In this invention, by setting a multi-level buffer gasket with a three-layer composite structure between the boss and the bottom flange of the tower, the tower vibration and wind impact can be effectively absorbed to reduce wear at the connection, solve the problem of insufficient buffering of the existing base, and extend the service life of the equipment. The boss and the bottom flange of the tower are connected by four evenly distributed bolts to balance the force.

[0018] 2. In this invention, the base body is made of Q345D low-alloy high-strength steel, which has high structural strength and good fatigue resistance. The multi-stage buffer gasket between the boss and the bottom flange of the tower is formed by vulcanization of the upper stainless steel plate, the middle nitrile rubber, and the lower aluminum alloy plate. The stainless steel plate and aluminum alloy plate can ensure the structural strength of the gasket and avoid excessive deformation of the gasket. The nitrile rubber has excellent elasticity and wear resistance, which can effectively absorb the vibration and impact generated during the operation of the tower, reduce the wear between the boss and the bottom flange of the tower, achieve flexible buffering, extend the service life of the connection, and ensure structural stability. The whole device is easy to install and has low maintenance cost, and is suitable for tower installation of various wind turbine generator sets. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the boss structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the connection buffer component structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the prestressed anchor bolt assembly of the present invention.

[0023] In the diagram: 1. Main body; 101. Base body; 102. Boss; 103. First through hole; 104. Second through hole; 2. Connecting buffer assembly; 201. Tower bottom flange; 202. Third through hole; 203. Bolt; 204. Multi-stage buffer washer; 3. Prestressed anchor bolt assembly; 301. Concrete slab; 302. Sinking hole; 303. Anchor bolt body; 304. Anchor plate; 305. Anti-loosening nut. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] For examples, please refer to Figures 1-4 The present invention provides a technical solution:

[0026] A wind turbine tower mounting base includes a main body 1, a connecting buffer assembly 2 is provided on the top of the main body 1, and a prestressed anchor bolt assembly 3 is provided on the bottom of the main body 1.

[0027] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the main body 1 includes a base body 101, with a boss 102 fixedly connected to the top of the base body 101. A second through hole 104 is provided inside the base body 101. The connecting buffer assembly 2 includes a tower bottom flange 201, with a third through hole 202 provided inside the tower bottom flange 201. A bolt 203 is installed inside the third through hole 202. A multi-level buffer washer 204 is provided between the boss 102 and the tower bottom flange 201. By providing a three-layer composite structure multi-level buffer washer 204 between the boss 102 and the tower bottom flange 201, tower vibration and wind impact can be effectively absorbed, reducing wear at the connection point, solving the problem of insufficient buffering of the existing base, and extending the service life of the equipment. The boss 102 and the tower bottom flange 201 are connected by four evenly distributed bolts 203, resulting in balanced force distribution.

[0028] The base body 101 has a disc-shaped structure and is made of Q345D low-alloy high-strength steel. The multi-stage buffer gasket 204 consists of three layers: an upper layer of stainless steel plate, a middle layer of nitrile rubber, and a lower layer of aluminum alloy plate, which are composite molded through a vulcanization process. Four third through holes 202 are provided, and four bolts 203 are provided. The boss 102 and the bottom flange 201 of the tower are connected by bolts 203. The top of the boss 102 has a first through hole 103, which has four holes through which the bolts 203 pass. The base body 101 is made of Q345D low-alloy high-strength steel, resulting in high structural strength and resistance. With good fatigue performance, the multi-stage buffer gasket 204 between the boss 102 and the bottom flange 201 of the tower is formed by vulcanization of the upper stainless steel plate, the middle nitrile rubber and the lower aluminum alloy plate. The stainless steel plate and the aluminum alloy plate can ensure the structural strength of the gasket and avoid excessive deformation of the gasket. The nitrile rubber has excellent elasticity and wear resistance, which can effectively absorb the vibration and impact generated during the operation of the tower, reduce the wear between the boss 102 and the bottom flange 201 of the tower, realize flexible buffering, extend the service life of the connection, and have a stable structure. The whole device is easy to install and has low maintenance cost, and is suitable for tower installation of various wind turbine generators.

[0029] In this embodiment, as Figure 1 and Figure 4 As shown, the prestressed anchor bolt assembly 3 includes a concrete slab 301. A recessed hole 302 is formed inside the concrete slab 301. A second through hole 104 corresponds to the recessed hole 302. An anchor bolt body 303 is disposed inside the recessed hole 302. An anchor plate 304 is disposed at the bottom of the anchor bolt body 303. A lock nut 305 is threadedly connected to the bottom of the anchor bolt body 303. Four anchor bolt bodies 303, anchor plates 304, and lock nuts 305 are provided. The anchor bolt body 303 passes through the second through hole 104 and the recessed hole 302, and its bottom is in contact with the anchor plate 304. It is tightened and fixed by the lock nuts 305. The anchor plate 304 increases the contact area between the anchor bolt body 303 and the concrete slab 301, improving stability. The lock nuts 305 effectively prevent the anchor bolt body 303 from loosening under vibration, ensuring a stable connection between the base body 101 and the concrete slab 301, preventing base displacement, and further improving overall installation stability.

[0030] Workflow of this invention: When the wind turbine tower mounting base designed using this scheme is in operation, the base body 101 is made of Q345D low-alloy high-strength steel and machined into a disc shape. A boss 102 is welded and fixed to the top. A first through hole 103 is opened on the top of the boss 102, and a second through hole 104 is opened at the corresponding position on the base body 101. The tower bottom flange 201 of the connecting buffer assembly 2 is fixedly connected to the bottom of the tower. The third through hole 202 of the flange corresponds to the first through hole 103 of the boss 102. Multi-stage buffer washers 204 are placed between the boss 102 and the tower bottom flange 201. Bolts 203 pass through the first through hole 103, the multi-stage buffer washers 204, and the third through hole 202. The two are fixed by tightening nuts. The concrete slab 301 of the prestressed anchor bolt assembly 3... The pre-cast concrete slab 301 has a recessed hole 302 inside. The anchor bolt body 303 passes through the second through hole 104 of the base body 101 and the recessed hole 302 of the concrete slab 301. Anchor plate 304 is placed at the bottom, and anti-loosening nut 305 is tightened to complete the fixed installation of the base and the ground foundation. After installation, the vibration and impact generated during the operation of the tower can be absorbed and buffered by the nitrile rubber middle layer of the multi-stage buffer washer 204. The stainless steel plate and aluminum alloy plate layer ensure that the washer does not deform, avoiding direct friction and wear between the boss 102 and the bottom flange 201 of the tower. The anti-loosening nut 305 of the prestressed anchor bolt assembly 3 prevents the anchor bolt body 303 from loosening. The anchor plate 304 improves the connection stability between the anchor bolt and the concrete slab 301, ensuring that the base as a whole does not shift, and ensuring the safe and stable operation of the wind turbine generator.

[0031] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine generator tower mounting base, comprising a main body (1), characterized in that: The top of the main body (1) is provided with a connecting buffer assembly (2), and the bottom of the main body (1) is provided with a prestressed anchor bolt assembly (3). The main body (1) includes a base body (101), a boss (102) is fixedly connected to the top of the base body (101), and a second through hole (104) is opened inside the base body (101). The connecting buffer assembly (2) includes a tower bottom flange (201), a third through hole (202) is provided inside the tower bottom flange (201), a bolt (203) is provided inside the third through hole (202), and a multi-level buffer gasket (204) is provided between the boss (102) and the tower bottom flange (201).

2. The wind turbine generator tower mounting base according to claim 1, characterized in that, The base body (101) is a disc-shaped structure, and the material is Q345D low alloy high strength steel.

3. The wind turbine tower mounting base according to claim 1, characterized in that, The multi-level buffer gasket (204) consists of three layers: the upper layer is a stainless steel plate, the middle layer is nitrile rubber, and the lower layer is an aluminum alloy plate, which are composite molded by vulcanization process.

4. A wind turbine tower mounting base according to claim 1, characterized in that, The third perforation (202) has four holes, and the bolts (203) are provided. The boss (102) and the bottom flange (201) of the tower are connected by bolts (203).

5. A wind turbine tower mounting base according to claim 1, characterized in that, The top of the boss (102) is provided with a first through hole (103), and there are four first through holes (103). The bolt (203) passes through the first through hole (103).

6. A wind turbine tower mounting base according to claim 1, characterized in that, The prestressed anchor bolt assembly (3) includes a concrete slab (301), and a recessed hole (302) is provided inside the concrete slab (301). The second through hole (104) corresponds to the position of the recessed hole (302).

7. A wind turbine tower mounting base according to claim 6, characterized in that, An anchor body (303) is provided inside the recessed hole (302), an anchor plate (304) is provided at the bottom of the anchor body (303), and an anti-loosening nut (305) is threadedly connected to the bottom of the anchor body (303).

8. A wind turbine tower mounting base according to claim 7, characterized in that, The anchor body (303), anchor plate (304), and anti-loosening nut (305) are provided in four parts.

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