CN202848326U - Root end support for long-distance transportation of large wind-driven generating blades - Google Patents

Abstract

A root end support for long-distance transportation of large wind-driven generating blades is mainly composed of a blade root end support base (1), blade bearing bars (2 and 3), a hydraulic jack mechanism (4), bolt holes (5), a random support plate (6) and a rubber cushion (7). An upper group of arc large gap bolt holes (5) and a lower group of arc large gap bolt holes (5) are processed in the blade bearing bars (2 and 3), the two types of arc large gap bolt holes (5) with different specifications and quantities are distributed at different heights and positions, can correspond to root bolts of wind-power blades of different specifications, and can meet the requirement for the same circumference diameter. Therefore, gaps exist on the peripheries of the root bolts of the wind-power blades and the corresponding bolt holes (5), and deformation and plugging crack caused by large concentrating stress exerted on the bolts in the transportation process are reduced. The root end support for long-distance transportation of large wind-driven generating blades can meet the requirements for installation, fixing and transportation of more then two types of wind-power blades, one type is that the root end face diameter of the wind-power blades is 2110mm, 64 bolts are evenly distributed on root ends, and the other type is that the 64 bolts are evenly distributed on root ends. The root end support solves the problem that an existing root end support for transportation can only meet the requirement for transportation of the wind-power blades of one specification at one time, improves replacing efficiency of the support for transportation, and reduces capital investment.

Description

A root end bracket for long-distance transportation of large wind power blades

technical field

The utility model belongs to the technical field of wind power generation blade transportation, and mainly relates to a root end bracket for long-distance transportation of large wind power generation blades.

Background technique

At present, most of the root-end load-bearing transport brackets used in the long-distance transportation of wind power blades adopt steel riveted weldment structures, and the bolts at the root of wind power blades are fixed and limited through hole shafts. During transportation, the load-bearing transport bracket at the root end is fixed together with the wind turbine blades to form a stable whole. The hole axis fit is to make the distribution of the bolt holes on the root-end load-bearing transport bracket have a fixed corresponding relationship with the diameter of the root of the wind turbine blade and the uniform number of bolts. The bolt holes of the root-end load-bearing transport bracket used in the prior art The hole position is mainly a single correspondence. That is to say, a transport bracket with distributed bolt holes can only transport one type of wind turbine blade at a time. Due to the demand for wind power blades of different specifications in the wind power market, a single bolt hole design cannot meet the transportation needs of various types of wind power blades. In addition, the transportation period and construction period of wind power blades from the manufacturer to the wind farm are relatively long. The transport bracket with a single bolt hole position cannot be used for the transportation of other types of wind turbine blades after returning from the wind farm, so a large number of transport brackets are left idle because they cannot be recycled. In addition, during the long-distance transportation of wind turbine blades, affected by the bumpy road surface of the wind farm, individual bolts at the root end of wind turbine blades are susceptible to large concentrated stress, resulting in local deformation or cracking of inner and outer nuts. The published application number is: 200920068307.X "Bracket for Large-Scale Wind Turbine Blade Sea Transportation" The technical features recorded in the patent literature, although it also involves the root end bracket, also includes bolt holes corresponding to the wind turbine blade root bolts. It does not solve the general problem of the number of bolts of different types and distribution of wind turbine blades and the problem of local concentrated stress on the bolts, and the composition of the transportation bracket is too expensive for long-distance transportation on land.

Contents of the invention

Aiming at the problems existing in the prior art, the utility model proposes a simple structure, which can meet the strength requirements in the long-distance transportation of large-scale wind power blades, and can solve the problem of local deformation of bolts caused by concentrated stress or sealing of inner and outer nuts during the transportation of wind power blades. It can solve the problem of cracking, especially the transport bracket that can transport two or more types of wind turbine blades at the same time.

In order to achieve the purpose of the above invention, the specific technical solution adopted by the utility model is: a root end support for long-distance transportation of large-scale wind power generation blades, which is mainly composed of a blade root end support base, a blade load-bearing rod, a bolt hole, a hydraulic jack, and a It is composed of a supporting plate and a rubber pad; the two ends and the center of the base of the blade root end bracket are respectively equipped with a blade load-bearing rod, and the blade load-bearing rod is divided into two groups of upper and lower groups. The number and distribution of bolt holes can correspond to the root bolts of different types of wind power blades one by one; two or more wind power blades are fixed on the blade load-bearing rods by cooperating with the hole shafts of the bolt holes; The root bracket for long-distance transportation of power generation blades, in which a group of bolt holes on the blade load-bearing rod can meet the installation and fixation of wind power blades with a root end surface diameter of 2110mm and 60 bolts evenly distributed, and the next set of bolt holes can meet the root end surface diameter of 2110mm. The wind power blades with 64 bolts are installed and fixed; the root end support for the long-distance transportation of large wind power generation blades is described, wherein a hydraulic pressure device that plays a load-bearing role and can use the root end of the wind power blades to rise is installed at the center of the base of the blade root end support. Jack, the hydraulic jack is equipped with a supporting plate, and the supporting plate is a rubber pad; the root end bracket for the long-distance transportation of large-scale wind power generation blades, wherein the bolts on the blade load-bearing rod corresponding to the bolts at the root of the wind power blade The hole is an arc-shaped bolt hole with a large gap, so that there is a gap around the bolt hole of the wind turbine blade root and the corresponding root end bracket, so as to reduce the problem that the bolt is subjected to large concentrated stress during transportation.

The utility model has a simple structure, can meet the transportation problems of different types of wind power blades and the turnover and utilization of different types of wind power blade brackets, reduces capital investment, improves the replacement efficiency of the transport bracket, and avoids the bolts on the wind power blades being subjected to concentrated stress during transportation. Deformation and plugging cracking and other issues.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the utility model hydraulic jack device.

In the figure: 1. Blade root support base; 2. Blade load-bearing rod; 3. Blade load-bearing rod; 4. Hydraulic jack; 5. Bolt holes;

Detailed ways

As shown in Fig. 1 and Fig. 2, a root end bracket for long-distance transportation of a large-scale wind power generation blade described in the utility model is mainly composed of a blade root end bracket base 1, a blade load-bearing rod 2, a blade load-bearing rod 3, a hydraulic jack 4. Bolt holes 5, supporting plates 6, and rubber pads 7; the two ends and the center of the blade root support base 1 are respectively provided with blade load-bearing rods (2, 3), and the blade load-bearing rods (2, 3) are Divided into upper and lower groups, there are two different specifications, quantities, and distributions that can meet the same circumference diameter, height, and location. Bolt holes 5 that can correspond to bolts at the root of different types of wind turbine blades; The bolt holes 5 on the top are used to fix the wind power blades on the blade bearing rods (2, 3) through the cooperation of the hole shafts. The hydraulic jack 4 is installed at the center of the base 1 of the blade root end bracket, and plays the role of bearing and raising the root end of the wind power blade. The hydraulic jack mechanism 4 is equipped with a supporting plate 6, and a rubber pad 7 is placed on the supporting plate 6 . When the wind power blade is in the hoisting state, the bolt holes 5 on the root end bracket are fixed on the corresponding bolts, and the rubber pad 7 cut to a certain thickness is placed on the supporting plate 6. The rubber pad 7 can After the wind turbine blade is completely put down, the thickness of the rubber pad 7 after being compressed and deformed by the weight of the wind turbine blade root can still make a certain gap between the bolt hole (5) and the hole wall. After the wind turbine blade and the root end bracket are relatively fixed, the wind turbine blade is raised to a position where there is a gap between the bolt and the bolt hole (5) on the corresponding root end bracket by using a hydraulic jack. At this time, the blade load-bearing rod (2, 3) It only plays the role of restricting the forward and backward movement and flipping of the wind power blades, and the weight of the root of the wind power blades is concentrated on the supporting plate 6 on the hydraulic jack 4 . Therefore, while solving the problem that the root end support can simultaneously transport more than two types of wind turbine blades, the problem of concentrated stress on the bolts during the transportation process is also solved.

Claims (5)

1. A root-end bracket for long-distance transportation of large-scale wind power generation blades, characterized in that: the root-end bracket is mainly composed of a blade root-end bracket base (1), a blade load-bearing rod (2), and a blade load-bearing rod (3) , a hydraulic jack mechanism (4), a bolt hole (5), a supporting plate (6), and a rubber pad (7); the two ends and the center of the blade root support base (1) are respectively provided with blade load-bearing rods (2,3), the blade load-bearing rods (2,3) are divided into upper and lower groups and processed with two bolt holes (5) that can meet the same circumference diameter but have different heights and positions. 2. A root bracket for long-distance transportation of large wind power blades according to claim 1, characterized in that: the bolt holes (5) can correspond to the root bolts of wind power blades of different types and with different root bolt numbers, It is fixed on the blade load-bearing rods (2, 3) by cooperating with the hole shafts of the bolt holes (5). 3. A root end bracket for long-distance transportation of large wind power generation blades according to claim 1, characterized in that: the last group of bolt holes (5) on the blade load-bearing rods (2, 3) can meet the diameter of the root end surface of For the installation and fixation of wind power blades with 60 bolts evenly distributed in 2110mm, the next set of bolt holes (5) can meet the installation and fixation of wind power blades with root end face diameter of 2110mm and 64 bolts evenly distributed. 4. A root end bracket for long-distance transportation of large wind power generation blades according to claim 1, characterized in that: the bolt holes (5) on the blade load-bearing rods (2, 3) corresponding to the bolts at the root of wind power blades are arc-shaped Large clearance bolt holes. 5. A root-end bracket for long-distance transportation of large-scale wind power generation blades according to claim 1, characterized in that: a hydraulic jack mechanism (4) is installed at the center of the blade root-end bracket base (1), and the hydraulic jack mechanism ( 4) Place the attached supporting plate (6) and rubber pad (7) on it.

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