CN220522699U

CN220522699U - Wind power equipment rear frame and wind power equipment

Info

Publication number: CN220522699U
Application number: CN202321888868.0U
Authority: CN
Inventors: 高超; 李中林; 杨文栋; 秦龙; 吴文雯; 刘继涛
Original assignee: Shanghai Electric Wind Power Group Co Ltd
Current assignee: Shanghai Electric Wind Power Group Co Ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2024-02-23
Anticipated expiration: 2033-07-17

Abstract

The application provides a wind power equipment rear frame and wind power equipment. The wind power equipment rear rack is used for assembling at least one power transformation device. The wind power equipment rear frame comprises a rear frame main body and a power transformation equipment bracket. The rear frame body comprises a first main beam and a second main beam which are oppositely arranged and connected with each other. The power transformation equipment bracket comprises a pair of fixing frames and a pair of hanging frames; the pair of fixing frames are fixed between the first main beam and the second main beam and are used for fixing at least one power transformation device; the pair of hanging frames are fixed at the bottoms of the pair of fixing frames and are positioned between the first main beam and the second main beam, and the pair of hanging frames are used for hanging at least one power transformation device. Different power transformation equipment can be flexibly assembled or selected, and the installation distance of the power transformation equipment is shortened through the hanging frame, so that the cost of the wind power equipment is reduced, and the market competitiveness of the wind power equipment is improved.

Description

Wind power equipment rear frame and wind power equipment

Technical Field

The application relates to the technical field of wind power equipment, in particular to a rear rack of wind power equipment and the wind power equipment.

Background

With the continuous progress of technology, the wind power generation cost is reduced year by year, and the technical efficiency is continuously improved. The rear frame of the wind power equipment is usually used for fixing important power transformation equipment such as a transformer, a converter and the like of a wind power generator set, is a structure bearing a large load, and needs to have enough stability and durability to ensure that the wind power equipment can stably operate under the condition of continuously changing wind power conditions. The design of the rear frame of the wind power equipment generally needs to consider various factors such as the height, the weight, the safety factors and the like of the wind power generation set so as to meet the design requirements and improve the operation efficiency and the safety of the wind power generation equipment to the greatest extent. With the increase of the appearance of the wind power equipment, the distance between the two beams of the rear frame of the wind power equipment is increased, so that the power transformation equipment is also increased, the cost of the power transformation equipment is increased, and the market competitiveness of the wind power equipment is reduced.

Disclosure of Invention

The application provides a wind power equipment rear frame and wind power equipment that adaptation degree is higher.

The application provides a wind power equipment rear frame for at least one transformer equipment of equipment, wind power equipment rear frame includes:

the rear frame body comprises a first main beam and a second main beam which are oppositely arranged and connected with each other; and

The power transformation equipment bracket is assembled on the rear rack main body and comprises a pair of fixing frames and a pair of hanging frames; the pair of fixing frames are fixed between the first main beam and the second main beam and are used for fixing at least one power transformation device; the pair of hanging frames are fixed at the bottoms of the pair of fixing frames and are positioned between the first main beam and the second main beam, and the pair of hanging frames are used for hanging at least one power transformation device.

Optionally, the fixing frame includes connecting portion and locates the fixed part of the bottom of connecting portion, connecting portion pass through fixed part is fixed in the top of first girder and second girder.

Optionally, the suspension bracket includes a hanging portion, and is fixed in the bottom of connecting portion, and a pair of hanging portion is located between the first girder and the second girder, the transformation equipment is fixed in the bottom of hanging portion.

Optionally, the suspension bracket includes a supporting portion, and is convexly disposed between the hooking portion and the first main beam or the second main beam; the bottom of first girder with the second girder is equipped with the boss, supporting part with boss fixed connection.

Optionally, the power transformation device includes a transformer; the bottom of the connecting part is provided with at least two pairs of first mounting holes, the number of each pair of first mounting holes is at least two, the at least two first mounting holes in each pair are respectively close to two ends of the connecting part, the at least two first mounting holes in one pair are positioned on the outer side or the inner side of the at least two first mounting holes in the other pair, and the hanging part is assembled with the at least two first mounting holes in one pair through a fastener and is fixed at the bottom of the connecting part; the transformer is hung at the bottom of the hanging part and is positioned between the first main beam and the second main beam.

Optionally, the power transformation device at least comprises a current transformer; the top of connecting portion is equipped with many pairs of second mounting holes, and every pair the quantity of second mounting hole sets up to two at least, the converter passes through the fastener with two at least second mounting holes equipment of a pair of wherein, is fixed in the top of connecting portion.

Optionally, the rear frame body includes a rear frame front end and a rear frame rear end; the dimensions of the first main beam and the second main beam in the vertical direction gradually decrease along the direction from the front end of the rear frame to the rear end of the rear frame.

Optionally, the first main beam and the second main beam are provided with a plurality of lightening holes, and the sizes of the lightening holes are the same or different.

Optionally, the rear frame body includes a rear frame front end and a rear frame rear end; the rear frame body further comprises a connecting main beam connected between the first main beam and the second main beam.

Optionally, the connecting girder is located at a side close to the rear end of the rear frame with respect to the front end of the rear frame.

Optionally, the power transformation equipment support is located at one side of the connecting main beam, which faces the rear end of the rear frame.

Optionally, the rear frame body further includes a main reinforcement beam connected between the first main beam and the second main beam.

Optionally, the rear frame body further includes a plurality of first support rods connected between the inner wall of the first main beam and the main reinforcement beam, and connected between the inner wall of the second main beam and the main reinforcement beam; the plurality of first support rods are located above the main reinforcement beams and form included angles with the main reinforcement beams.

Optionally, the rear frame body further includes a plurality of second support rods connected between the bottom wall of the first main beam and the main reinforcement beam, and connected between the bottom wall of the second main beam and the main reinforcement beam; the plurality of second support rods are located below the main reinforcement beams and form included angles with the main reinforcement beams.

The application also provides a wind power plant comprising:

at least one power transformation device; and

A wind power plant rear bay as in any of the previous embodiments, the at least one power transformation device being assembled to a rear bay body of the wind power plant rear bay by a power transformation device cradle of the wind power plant rear bay.

Optionally, the power transformation device includes at least one of a transformer and a converter.

Wind power equipment rear frame and wind power equipment of this application embodiment. The wind power equipment rear rack is provided with the power transformation equipment support, at least one power transformation equipment is fixed by the aid of the pair of fixing frames, at least one power transformation equipment is hung by the aid of the pair of hanging frames, different power transformation equipment can be flexibly assembled or selected, the installation distance of the power transformation equipment is shortened by hanging the hanging frames, cost of the wind power equipment is reduced, and market competitiveness of the wind power equipment is improved.

Drawings

FIG. 1 is a schematic diagram illustrating one embodiment of a wind power plant rear rack of the present application.

FIG. 2 is a schematic side view of a rear frame of the wind power plant of FIG. 1 from one perspective.

FIG. 3 is a schematic side view of the wind power plant rear frame of FIG. 1 from another perspective.

Fig. 4 is a schematic structural view of an embodiment of a power transformation equipment support of the wind power equipment rear rack shown in fig. 1.

Fig. 5 is a schematic side view of a power transformation equipment support of the wind power equipment rear frame shown in fig. 4.

Fig. 6 is a schematic side view of another view of the power transformation equipment support of the wind power equipment rear frame shown in fig. 4.

Fig. 7 is a schematic structural view of another embodiment of a power transformation equipment support of the wind power equipment rear rack shown in fig. 1.

Fig. 8 is a schematic side view of a power transformation equipment support of the wind power equipment rear frame shown in fig. 7.

Fig. 9 is a schematic side view of another view of the power transformation equipment support of the wind power equipment rear frame shown in fig. 7.

FIG. 10 is a schematic structural view of an embodiment of a rear housing body of the wind power plant rear housing of FIG. 1.

FIG. 11 is a schematic top view of a rear housing body of the wind power plant rear housing of FIG. 10.

FIG. 12 is a schematic side view of a rear housing body of the wind power plant rear housing of FIG. 10.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.

The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "several" means at least two. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

The application provides a wind power equipment rear frame and wind power equipment. The wind power equipment rear rack is used for assembling at least one power transformation device. The wind power equipment rear frame comprises a rear frame main body and a power transformation equipment bracket. The rear frame body comprises a first main beam and a second main beam which are oppositely arranged and connected with each other. The power transformation equipment bracket comprises a pair of fixing frames and a pair of hanging frames; the pair of fixing frames are fixed between the first main beam and the second main beam and are used for fixing at least one power transformation device; the pair of hanging frames are fixed at the bottoms of the pair of fixing frames and are positioned between the first main beam and the second main beam, and the pair of hanging frames are used for hanging at least one power transformation device.

The wind power equipment rear rack and the wind power equipment are described in detail below with reference to the accompanying drawings. The features of the examples and embodiments described below may be combined with each other without conflict.

Wind power plants refer to various mechanical and electrical devices for wind power generation. The wind power equipment mainly comprises various components such as a wind generating set, wind turbine blades, a fan tower, a large-scale bearing, a converter/transformer and the like, and the equipment relates to the overall performance and efficiency of a wind power system. With the continuous progress and application of the technology, the performance and reliability of wind power equipment can be gradually improved, and the health and sustainable development of the wind power generation industry is promoted. In this embodiment, the wind power plant includes at least one power transformation plant and a wind power plant rear rack. The wind power equipment rear rack is used for assembling at least one power transformation device. In this embodiment, the power transformation device includes at least one of a transformer and a converter. In this embodiment, the power transformation device includes a transformer. The assembled transformer will be described as an example, with particular reference to the examples shown in fig. 1 to 12 below.

Fig. 1 shows a schematic structural diagram of an embodiment of a wind power installation rear frame 1 of the present application. Fig. 2 shows a schematic side view of the rear frame 1 of the wind power installation shown in fig. 1 from one perspective. Fig. 3 shows a schematic side view of a further view of the rear frame 1 of the wind power installation shown in fig. 1. As shown in fig. 1 to 3, the wind power equipment rear frame 1 includes a rear frame body 10 and a power transformation equipment bracket 20, and the power transformation equipment bracket 20 is assembled to the rear frame body 10. At least one power transformation device is assembled to the rear frame body 10 of the wind power equipment rear frame 1 through the power transformation device bracket 20 of the wind power equipment rear frame 1. In this embodiment, the power transformation device may be a converter and a transformer.

In the embodiment shown in fig. 1 to 3, the rear frame body 10 includes a first girder 101 and a second girder 102 that are disposed opposite to and connected to each other. In the present embodiment, the first main beam 101 and the second main beam 102 each extend in the first direction X1. The first main beam 101 and the second main beam 102 are disposed opposite to each other in the second direction X2 and are connected to each other. The first direction X1 and the X2 are positioned in the same plane and are mutually intersected and vertically arranged. In this embodiment, the first main beam 101 and the second main beam 102 are connected by a fastener such as a bolt, and the rear frame body 10 is formed in a cantilever structure. The front end of the rear frame body 10 is fixedly connected with the front frame by fasteners such as bolts, and the rest of the structure is suspended.

In the embodiment shown in fig. 1 to 3, the substation equipment rack 20 includes a pair of fixing frames 201 and a pair of suspension frames 202. A pair of holders 201 are fixed between the first girder 101 and the second girder 102. In the present embodiment, a pair of fixing frames 201 extend in the second direction X2, and are fixed between the first main beam 101 and the second main beam 102 in the second direction X2. The fixing frame 201 is located on top of the first girder 101 and the second girder 102. A pair of holders 201 is used to hold at least one power transformation device. For example, the power transformation device may be a current transformer, and the pair of holders 201 are used to hold one or more current transformers. A pair of hanging frames 202 are fixed to the bottoms of a pair of fixing frames 201. In the present embodiment, a pair of suspension frames 202 are disposed at intervals in the second direction X2 and located between the first main beam 101 and the second main beam 102. Each hanger 202 extends along a first direction X1. A pair of hanger frames 202 are fixed to the first main beam 101 and the second main beam 102 by a pair of fixing frames 201. A pair of hangers 202 are used to hang at least one power transformation device. As shown in fig. 1 to 3, the power transformation device may be a transformer 3, and a pair of hanging frames 202 are used to hang the transformer 3.

In the above-described aspect, the wind power plant rear frame 1 fixes at least one power transformation device (for example, a current transformer) by a pair of fixing frames 201 by providing the power transformation device brackets 20, and hangs at least one power transformation device (for example, a transformer) by a pair of hanging frames 202. So can assemble in a flexible way or select different substation equipment to through the mount frame 202 articulates, make substation equipment's installation distance shorten, reduce wind power equipment's cost, improve wind power equipment's market competition.

Fig. 4 is a schematic structural view of an embodiment of a power transformation equipment support 20 of the wind power equipment rear frame 1 shown in fig. 1. Fig. 5 is a schematic side view of a view of the power transformation equipment support 20 of the wind power equipment rear frame 1 shown in fig. 4. Fig. 6 is a schematic diagram of a side view of another view of the power transformation equipment support 20 of the wind power equipment rear frame 1 shown in fig. 4. As shown in fig. 1 to 6, the fixing frame 201 includes a connection portion 203 and a fixing portion 204 provided at the bottom of the connection portion 203, and the connection portion 203 is fixed to the top of the first main beam 101 and the second main beam 102 by the fixing portion 204. In this embodiment, the connection portion 203 extends along the second direction X2, and the fixing portion 204 extends from the bottom of the connection portion 203 to the top, and is connected to the surfaces of the first main beam 101 and the second main beam 102 by fasteners.

In the embodiment shown in fig. 4 to 5, the hanger 202 includes a hanging portion 205 fixed to the bottom of the connection portion 203, and a pair of hanging portions 205 are located between the first main beam 101 and the second main beam 102, and a power transformation device (as shown in fig. 1, the power transformation device may be a transformer 3) is fixed to the bottom of the hanging portion 205. In the present embodiment, a pair of the hitching sections 205 are provided inside the first main beam 101 and the second main beam 102 with respect to a pair of the fixing sections 204. The hanging portion 205 is connected to the connecting portion 203 by a fastener, and extends from the bottom of the connecting portion 203 to the top. The hanging portion 205 can be fixed at different positions of the connecting portion 203 according to different power transformation devices, so that the installation distance of the power transformation device can be adjusted, and the power transformation device can be adapted to different specifications. Through setting up the portion of hanging 205, can make the installation distance of substation equipment shorten, avoid increasing substation equipment because of the appearance increase of wind power equipment, reduce wind power equipment's cost, improve wind power equipment's market competition.

In the embodiment shown in fig. 1, 4 to 5, the hanger 202 includes a supporting portion 206 protruding between the hanging portion 205 and the first main beam 101 or the second main beam 102. In the present embodiment, the supporting portion 206 is disposed between the hooking portion 205 and the first main beam 101 or between the hooking portion 205 and the second main beam 102 in the second direction X2. The bottoms of the first main beam 101 and the second main beam 102 are provided with a boss 103 (as shown in fig. 1), and when the hanging portion 205 is fixed to the connecting portion 203, the supporting portion 206 is fixedly connected to the boss 103. Through with supporting part 206 fixed connection in boss 103, can play auxiliary stay's effect, play dual fixed action on the one hand, on the other hand plays the effect of supplementary preventing rocking, so make fixed stability better.

In the embodiment shown in fig. 4, the bottom of the connection portion 203 is provided with at least two pairs of first mounting holes 207, and the number of the first mounting holes 207 of each pair is at least two. At least two first mounting holes 207 of each pair are provided near both ends of the connection portion, respectively. At least two first mounting holes of at least two pairs are spaced apart by different distances. At least two of the first mounting holes 207 of one pair are located outside or inside at least two of the first mounting holes 207 of the other pair. The hooking portion 205 is assembled with at least two first mounting holes 207 of one pair by a fastener, and is fixed to the bottom of the connection portion 203. The transformer 3 is hung at the bottom of the hanging portion 205 and is located between the first main beam 101 and the second main beam 102. In the present embodiment, the first mounting holes 207 may be provided in two or more pairs. Each pair includes two or more first mounting holes 207. The present embodiment may be arranged according to different transformer specifications. Through setting up the first mounting hole 207 in different positions, the installation distance of adjustable transformer, but flexible adaptation different specification's substation equipment avoids increasing substation equipment because of wind power equipment's appearance increases, reduces wind power equipment's cost.

In the embodiment shown in fig. 4, the top of the connection portion 203 is provided with a plurality of pairs of second mounting holes 208, and the number of the second mounting holes 208 of each pair is at least two. The current transformer is assembled with at least two second mounting holes 208 of one pair by fasteners and fixed to the top of the connection part 203. In the present embodiment, the plurality of second mounting holes 208 may be provided in two or more pairs. Each pair includes two or more second mounting holes 208. The plurality of second mounting holes 208 are spaced apart. The embodiment can be arranged according to different specifications of the current transformers. The converter has a relatively heavy weight and a rectangular parallelepiped shape, and is arranged and mounted on top of the pair of connection portions 203. By providing the second mounting holes 208 in different positions, one or more current transformers may be mounted. By this arrangement, the upper space of the fixing frame 201 is effectively utilized, and the layout structure is compact.

Fig. 7 is a schematic structural view of another embodiment of the power transformation equipment support 20 of the wind power equipment rear frame 1 shown in fig. 1. Fig. 8 is a schematic diagram showing a side view of a view angle of the power transformation equipment support 20 of the wind power equipment rear frame 1 shown in fig. 7. Fig. 9 is a schematic side view of another view of the power transformation equipment support 20 of the wind power equipment rear frame 1 shown in fig. 7. The embodiment shown in fig. 7 to 9 is similar to the embodiment shown in fig. 4 to 6 in that two sets of first mounting holes 207 are provided at both ends of the connection portion 203. The main difference is that the positions where the hooking portions 205 are fixed to the connecting portions 203 are different. In the embodiment shown in fig. 4 to 6, one pair of the first mounting holes 207 is provided at a distance of L1, and the two hitching sections 205 are spaced apart from each other by L1. In the embodiment shown in fig. 7 to 9, the other pair of first mounting holes 207 are provided closely, the two hitching sections 205 are spaced apart by a distance L2, and the transformer is mounted to form a distance L2, L2 being smaller than L1. The pair of first mounting holes 207 shown in the embodiment of fig. 7 to 9 are located inside the pair of first mounting holes 207 shown in the embodiment of fig. 4 to 6. The pair of first mounting holes 207 shown in the embodiment of fig. 4 to 6 are located outside the pair of first mounting holes 207 shown in the embodiment of fig. 7 to 9. So set up, make the installation distance of substation equipment adjustable, but the substation equipment of different specifications of adaptation improves the commonality of frame 1 behind the wind-powered electricity generation equipment, reduces wind-powered electricity generation equipment's cost, improves wind-powered electricity generation equipment's market competition.

Fig. 10 is a schematic diagram showing the structure of an embodiment of the rear frame body 10 of the wind power plant rear frame 1 shown in fig. 1. Fig. 11 is a schematic plan view of the rear frame body 10 of the wind power plant rear frame 1 shown in fig. 10. Fig. 12 is a schematic side view of the rear frame body 10 of the wind power plant rear frame 1 shown in fig. 10. As shown in conjunction with fig. 1-6 and 10-11, the rear housing body 10 includes a rear housing front end 104 and a rear housing rear end 105. The rear rack front end 104 is configured to connect with a wind power plant front rack. The rear housing rear end 105 is a floating arrangement for assembling at least one power transformation device (e.g., including a transformer or a converter). In the present embodiment, the first main beam 101 and the second main beam 102 extend in a direction in which the rear frame front end 104 extends toward the rear frame rear end 105. The direction in which the rear chassis front end 104 extends toward the rear chassis rear end 105 may be the first direction X1. The rear frame rear end 105 is tapered in vertical dimension relative to the rear frame front end 104. The dimensions of the first main beam 101 and the second main beam 102 in the vertical direction gradually decrease in the direction in which the rear frame front end 104 extends toward the rear frame rear end 105. The vertical dimension refers to a top-down vertical dimension or a bottom-up vertical dimension. This arrangement allows the rear housing rear end 105 to be reduced in weight. In this embodiment, the sections of the first main beam 101 and the second main beam 102 are gradually changed from front to back in the first direction X1 according to the stress change, and the weight is reduced.

In the embodiment shown in fig. 1, 10 and 12, the first main beam 101 and the second main beam 102 are provided with a plurality of weight-reducing holes 106, and the sizes of the plurality of weight-reducing holes 106 are the same or different. By providing the plurality of weight-reducing holes 106 on the first and second girders 101 and 102, the weight of the first and second girders 101 and 102 is reduced on the basis of satisfying the load supporting force, thereby reducing the weight of the rear frame body 10.

In the embodiment of fig. 1, 10-11, the rear frame body 10 further includes a connecting girder 107 connected between the first girder 101 and the second girder 102. In this embodiment, the connecting girders 107 extend in the second direction X2. The first girder 101 and the second girder 102 are connected by a connecting girder 107. Since the rear frame rear end 105 mainly carries one or more power transformation devices (transformers and/or converters), the connecting girder 107 is located at a side close to the rear frame rear end 105 with respect to the rear frame front end 104, and the fixing strength of the rear frame rear ends 105 of the first girder 101 and the second girder 102 of the rear frame body 10 is reinforced. The connecting girder 107 is further provided with a plurality of weight-reducing holes 106 for reducing the weight of the connecting girder 107. In this embodiment, the power transformation equipment support 20 is located on the side of the connecting main beam 107 that faces the rear frame rear end 105. By the arrangement, the space of one side of the connecting main beam 107 facing the rear end 105 of the rear frame is effectively utilized, and the transformer equipment is supported or hung.

In the embodiment shown in fig. 10 and 11, the rear frame body 10 further includes a main reinforcement beam 108 connected between the first main beam 101 and the second main beam 102. In the present embodiment, the main reinforcement beam 108 extends in the second direction X2. By providing the main reinforcement beams 108, the load bearing strength of the first main beam 101 and the second main beam 102 is reinforced.

In the embodiment shown in fig. 10 and 11, the rear frame body 10 further includes a plurality of first support bars 109 connected between the inner wall of the first main beam 101 and the main reinforcement beam 108, and between the inner wall of the second main beam 102 and the main reinforcement beam 108. In the present embodiment, the plurality of first support rods 109 extend in the second direction X2. The plurality of first support bars 109 are provided to strengthen the load bearing strength between the first main beam 101 and the main reinforcement beam 108 and between the second main beam 102 and the main reinforcement beam 108. In this embodiment, the plurality of first support rods 109 are located above the main reinforcement beam 108 and form an included angle with the main reinforcement beam 108. By forming the included angles between the plurality of first support bars 109 and the main reinforcement beam 108 to form a triangle, the bearing strength is enhanced and the stability is improved.

In the embodiment shown in fig. 10 and 11, the rear frame body 10 further includes a plurality of second support bars 110 connected between the bottom wall of the first main beam 101 and the main reinforcement beam 108, and between the bottom wall of the second main beam 102 and the main reinforcement beam 108. In the present embodiment, the plurality of second support bars 110 extend in the second direction X2. The plurality of second support bars 110 are provided to strengthen the load bearing strength between the first main beam 101 and the main reinforcement beam 108 and between the second main beam 102 and the main reinforcement beam 108. In the present embodiment, the plurality of second support rods 110 are located below the main reinforcement beam 108 and form an included angle with the main reinforcement beam 108. By forming the included angles between the plurality of second support bars 110 and the bottom wall of the main reinforcement beam 108 to form a triangle, the bearing strength is enhanced and the stability is improved.

The fastener in this embodiment may be a fastener such as a bolt or a latch. Other fasteners are also possible. Certain rigidity or strength requirements need to be met, and the fixing stability is good, so that the assembly is convenient.

In the embodiments shown in fig. 1 to 6 and 10 to 12, the assembly process of the wind power installation rear frame 1 comprises: first, the first main beam 101 and the second main beam 102 of the rear frame body 10 are installed. And the first main beam 101 and the second main beam 102 are connected and fixed at the tool equipment of the installation station through the holes of the heads by using fasteners. The two ends of the connecting girder 107 and the main reinforcing girder 108 are then connected to the first girder 101 and the second girder 102, respectively, by fasteners. The two first support bars 109 are arranged symmetrically left and right and are respectively connected with the main reinforcement beam 108, the first main beam 101 and the second main beam 102. The four second support bars 110 are arranged symmetrically left and right with respect to the main reinforcement beam 108, and connect the main reinforcement beam 108, the first main beam 101, and the second main beam 102. Four connecting seats 111 are provided, and the four connecting seats are identical in structure and are connected between two ends of the connecting main beam 107 and the first main beam 101 and the second main beam 102. The above-mentioned all connect through fasteners such as bolt, convenient dismantlement and transportation. And then a pair of fixing frames 201 are sequentially installed, and two ends of the fixing frames 201 are connected with the upper surfaces of the first main beam 101 and the second main beam 102 through fasteners. Then, the upper parts of the two suspension brackets 202 are respectively mounted on both sides of the connection part 203 of the pair of fixing brackets 201 by fasteners, and corresponding mounting holes are selected according to the specifications of the transformer used. The four support portions 206 are then secured between the hitching section 205 and the first and second main beams 101, 102, respectively, by fasteners. Finally, the transformer is mounted to the bottom of the transformer hooking portion 205 by fasteners. The assembly mode is simple and convenient to disassemble or assemble.

In other embodiments, the assembly process of the wind power plant rear frame 1 may further include: first, the first main beam 101 and the second main beam 102 of the rear frame body 10 are installed. And the first main beam 101 and the second main beam 102 are connected and fixed at the tool equipment of the installation station through the holes of the heads by using fasteners. The two ends of the connecting girder 107 and the main reinforcing girder 108 are then connected to the first girder 101 and the second girder 102, respectively, by fasteners. The two first support bars 109 are arranged symmetrically left and right and are respectively connected with the main reinforcement beam 108, the first main beam 101 and the second main beam 102. The four second support bars 110 are arranged symmetrically left and right with respect to the main reinforcement beam 108, and connect the main reinforcement beam 108, the first main beam 101, and the second main beam 102. Four connecting seats 111 are provided, and the four connecting seats are identical in structure and are connected between two ends of the connecting main beam 107 and the first main beam 101 and the second main beam 102. The above-mentioned all connect through fasteners such as bolt, convenient dismantlement and transportation. And then a pair of fixing frames 201 are sequentially installed, and two ends of the fixing frames 201 are connected with the upper surfaces of the first main beam 101 and the second main beam 102 through fasteners. The bottoms of the two hitches 205 are then attached to the left and right sides of the transformer, respectively, by fasteners. Then, the transformer and the hooking portions 205 are integrally mounted to both sides of the connection portion 203. Finally, the four support portions 206 are respectively fixed between the hitching section 205 and the first and second main beams 101 and 102 by fasteners. The assembly mode is simple and convenient to disassemble or assemble.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the utility model to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.

Claims

1. A wind power plant rear rack for assembling at least one power transformation device, the wind power plant rear rack comprising:

2. The wind power plant rear frame of claim 1, wherein the fixing frame comprises a connecting portion and a fixing portion provided at a bottom of the connecting portion, and the connecting portion is fixed to tops of the first main beam and the second main beam through the fixing portion.

3. A wind power plant rear frame as claimed in claim 2, wherein the hanger comprises a hooking portion fixed to the bottom of the connection portion, and a pair of hooking portions are located between the first main beam and the second main beam, and the power transformation device is fixed to the bottom of the hooking portion.

4. A wind power plant rear frame according to claim 3, wherein the suspension bracket comprises a support part protruding between the hitching part and the first main beam or the second main beam; the bottom of first girder with the second girder is equipped with the boss, supporting part with boss fixed connection.

5. A wind power plant aft frame according to claim 3, wherein the power transformation plant comprises a transformer; the bottom of the connecting part is provided with at least two pairs of first mounting holes, the number of each pair of first mounting holes is at least two, the at least two first mounting holes in each pair are respectively close to two ends of the connecting part, the at least two first mounting holes in one pair are positioned on the outer side or the inner side of the at least two first mounting holes in the other pair, and the hanging part is assembled with the at least two first mounting holes in one pair through a fastener and is fixed at the bottom of the connecting part; the transformer is hung at the bottom of the hanging part and is positioned between the first main beam and the second main beam; and/or

The power transformation equipment at least comprises a current transformer; the top of connecting portion is equipped with many pairs of second mounting holes, and every pair the quantity of second mounting hole sets up to two at least, the converter passes through the fastener with two at least second mounting holes equipment of a pair of wherein, is fixed in the top of connecting portion.

6. The wind power plant aft frame of claim 1, wherein the aft frame body includes an aft frame front end and an aft frame rear end; the dimensions of the first main beam and the second main beam in the vertical direction gradually decrease along the direction from the front end of the rear frame to the rear end of the rear frame; and/or

The first main beam and the second main beam are provided with a plurality of lightening holes, and the sizes of the lightening holes are the same or different.

7. The wind power plant aft frame of claim 1, wherein the aft frame body includes an aft frame front end and an aft frame rear end; the rear frame main body further comprises a connecting main beam which is connected between the first main beam and the second main beam;

the connecting girder is positioned at one side close to the rear end of the rear frame relative to the front end of the rear frame; and/or

The power transformation equipment support is located on one side of the connecting main beam, which faces the rear end of the rear frame.

8. The wind power plant aft frame of claim 1, wherein the aft frame body further includes a main reinforcement beam connected between the first main beam and the second main beam;

the rear frame main body further comprises a plurality of first support rods connected between the inner wall of the first main beam and the main reinforcement beam and between the inner wall of the second main beam and the main reinforcement beam; the plurality of first support rods are positioned above the main reinforcement beam, and an included angle is formed between the plurality of first support rods and the main reinforcement beam; and/or

The rear frame body further comprises a plurality of second support rods connected between the bottom wall of the first main beam and the main reinforcement beam and between the bottom wall of the second main beam and the main reinforcement beam; the plurality of second support rods are positioned below the main reinforcement beam, and an included angle is formed between the plurality of second support rods and the main reinforcement beam.

9. A wind power plant, comprising:

at least one power transformation device; and

A wind power plant rear bay as claimed in any one of claims 1 to 8, the at least one power transformation device being assembled to a rear bay body of the wind power plant rear bay by a power transformation device cradle of the wind power plant rear bay.

10. Wind power plant according to claim 9, characterized in that the power transformation plant comprises at least one of a transformer, a converter.