Transportation trolley for dispatching multi-specification semi-direct-drive wind driven generators

Abstract

The utility model belongs to the technical field of auxiliary transportation of wind driven generators, and particularly discloses a transportation trolley for dispatching multi-specification semi-direct-drive wind driven generators, which comprises a square rack main body, and four sets of mounting components are respectively arranged on the square rack main body. A plurality of through holes matched with threaded holes in the bottom of a semi-direct-drive wind driven generator base of the corresponding specification in number and position are formed in each set of installation assembly, the corresponding through holes in each set of installation assembly form virtual circles, the virtual circles formed by the through holes corresponding to the four sets of installation assemblies are concentric, and the diameters of the virtual circles are sequentially arranged from small to large. The first installation assembly is used for fixedly installing and transporting the semi-direct-drive wind driven generators with the corresponding specifications and sizes of connectors, and the first installation assembly is detachably connected with the body and can be replaced according to the actual situation. The transport trolley provided by the utility model can meet the transport and use requirements of semi-direct-drive wind driven generators with different specifications corresponding to generators with different interface sizes, the transport input cost is reduced, and the universality of the transport trolley is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary transportation of wind turbines, and particularly relates to a transportation trolley for shipping multi-specification semi-direct-drive wind turbines. Background Art

[0002] Energy is an indispensable foundation for the development of human society and production and life. However, due to the rapid consumption of traditional energy and environmental pollution, countries around the world have paid increasing attention to the development of renewable energy. Renewable energy such as solar energy, wind energy, hydrogen energy, and biomass energy has developed rapidly in recent years. Among them, wind energy, as a clean renewable energy, can be collected and utilized through wind turbines and is currently being applied more and more widely.

[0003] Wind turbines are classified into doubly-fed, direct-drive, and semi-direct-drive according to the main drive chain structure. Among them, semi-direct-drive means that the wind blades drive the gearbox to drive the permanent magnet motor to generate electricity. It is between direct-drive and doubly-fed. The speed regulation of the gearbox is not as high as that of the doubly-fed, and the generator has also changed from the wound type of the doubly-fed to the permanent magnet synchronous type, avoiding many defects of the direct-drive type drive scheme and the high-speed gearbox drive scheme, integrating the advantages of both direct-drive and doubly-fed wind turbines, having the advantages of compact structure, high power generation efficiency, small occupied space, etc., and being suitable for large-scale wind power. Therefore, the related technologies around semi-direct-drive wind turbines have become the main research objects for domestic and foreign wind power enterprises to reduce costs, increase efficiency, and improve competitiveness.

[0004] Among them, after the semi-direct-drive wind turbine is assembled, it needs to be shipped to the next process destination (such as a wind farm, etc.). However, due to the irregular shape of the semi-direct-drive wind turbine, in order to cooperate with the transportation of vehicles, a special transportation trolley needs to be configured. The transportation trolley is required to match the threaded holes at the bottom of the wind turbine pedestal and ensure relative stability during transportation. However, in recent years, with the development of semi-direct-drive wind turbine technology, the wind turbine has developed towards super compactness, its structure has changed greatly, the generator cooler has an end cover installation type and a pedestal external hanging type, and the size range of the lower end face of the pedestal is relatively large. At present, the transportation trolley is customized according to the specifications of a single semi-direct-drive wind turbine, which results in a variety of transportation trolley structures and sizes, difficult management of transportation trolleys, and backlogs of transportation trolleys for the delivered motors, which is not conducive to the cost control of the company's transportation trolleys. Therefore, it is urgent to develop a transportation trolley suitable for different specifications of semi-direct-drive wind turbines to meet the transportation use requirements of the generators of four different interface sizes (the diameter range of the virtual circles where the four different interfaces are located is 1656 mm to 3400 mm) corresponding to different specifications of semi-direct-drive wind turbines mainly produced by our company.

[0005] In view of this, this utility model is specifically proposed. Content of the Utility Model

[0006] The purpose of the present utility model is to overcome the disadvantages of the above-mentioned prior art, and provide a transportation trolley for shipping multi-specification semi-direct drive wind turbines. By providing four installation components with different specifications on the square frame body, this transportation trolley can meet the transportation requirements of different specification semi-direct drive wind turbines corresponding to four different interface sizes currently mainly produced by our company, solve various problems of the existing semi-direct drive wind turbines that require customized transportation trolleys one by one, greatly reduce the transportation input cost, and improve the versatility of the transportation trolley.

[0007] The purpose of the present utility model is solved by the following technical solutions:

[0008] A transportation trolley for shipping multi-specification semi-direct drive wind turbines provided by the present utility model, the transportation trolley includes a square frame body fixedly spliced by two parallel main cross beams and two parallel main longitudinal beams;

[0009] Wherein, a set of first installation component, second installation component, third installation component and fourth installation component are respectively arranged on the square frame body. A plurality of through holes matching the number and position of the threaded holes at the bottom of the machine base of the semi-direct drive wind turbine with the corresponding specification are respectively opened on each installation component, and the corresponding plurality of through holes on each installation component respectively form a virtual circle. The virtual circles formed by the corresponding through holes of the first installation component, second installation component, third installation component and fourth installation component are concentric, and the diameter sizes are successively the first virtual circle, the second virtual circle, the third virtual circle and the fourth virtual circle from small to large, for fixedly installing and transporting the semi-direct drive wind turbine with the corresponding specification interface size.

[0010] Furthermore, the first installation component includes two parallel first support beams arranged along the first direction. The two first support beams are detachably arranged in the square frame body, and four first connecting plates are fixedly arranged at intervals on the upper surfaces of the two first support beams. A first through hole matching the number and position of the threaded holes at the bottom of the machine base of the semi-direct drive wind turbine with the first specification is opened on each first connecting plate, and the plurality of first through holes form a first virtual circle with the geometric center of the square frame body as the center of the circle.

[0011] Furthermore, the first installation component further includes a second support beam detachably arranged in the square frame body and arranged along the second direction, and the second support beam intersects with the two first support beams.

[0012] Further, the second mounting assembly includes four second connecting plates, which are respectively mounted on the outer sides of the middle parts of the two main cross beams and the two main longitudinal beams of the square frame body. Second through holes that match the number and positions of the threaded holes at the bottom of the base of the second-specification semi-direct-drive wind turbine are provided on each of the second connecting plates. A plurality of the second through holes form a second virtual circle with the geometric center of the square frame body as the center of the circle.

[0013] Further, the third mounting assembly includes four third connecting plates, which are respectively mounted on the outer sides of the two main cross beams or the two main longitudinal beams of the square frame body. Each main cross beam or main longitudinal beam is provided with two third connecting plates, and the two third connecting plates provided on each main cross beam or main longitudinal beam are located on both sides of the second connecting plate. Third through holes that match the number and positions of the threaded holes at the bottom of the base of the third-specification semi-direct-drive wind turbine are provided on each of the third connecting plates. A plurality of the third through holes form a third virtual circle with the geometric center of the square frame body as the center of the circle.

[0014] Further, the fourth mounting assembly includes a plurality of fourth through holes provided on the main cross beams and the main longitudinal beams. The number and positions of the fourth through holes match the number and positions of the threaded holes at the bottom of the base of the fourth-specification semi-direct-drive wind turbine. A plurality of the fourth through holes form a fourth virtual circle with the geometric center of the square frame body as the center of the circle.

[0015] Further, the transport trolley further includes a plurality of heightening support platforms, which are uniformly distributed on the top of the square frame body and are detachably connected to the square frame body for increasing the height of the transport trolley.

[0016] Further, the transport trolley further includes a plurality of protective pads, and the protective pads are made of elastic materials for protecting the bottom structure of the semi-direct-drive wind turbine.

[0017] Further, both the main cross beams and the main longitudinal beams are made of the same model of hot-rolled I-beams, and a tool box is provided on the outer side of the main cross beam or the main longitudinal beam.

[0018] Further, hoisting holes are provided at the middle positions of the upper parts of each main cross beam and main longitudinal beam for the transfer and hoisting of the transport trolley. At the same time, fixing holes are provided on both sides of each main cross beam for the connection and fixation of the transport trolley to the body of the transport vehicle.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] 1. The transport trolley provided by the present utility model mainly consists of a square frame body, a first mounting component, a second mounting component, a third mounting component, and a fourth mounting component. Among them, each mounting component is provided with through holes that match the number and positions of the threaded holes at the bottom of the semi-direct drive wind turbine pedestal according to the corresponding specification interface dimensions. And the through holes set by each mounting component form a virtual circle of the same size as the threaded holes at the bottom of the corresponding generator. Therefore, it can at least meet the transportation requirements of different specifications of semi-direct drive wind turbines currently mainly produced by our company for generators with four different interface dimensions (1656 mm - 3400 mm). In addition, since the first mounting component is detachably connected to the square frame body, the first mounting component can be adjusted and replaced according to the actual interface dimensions of the transported generator, further expanding the applicable range of the transport trolley and improving the versatility of the transport trolley to a certain extent.

[0021] 2. The transport trolley provided by the present utility model further includes a heightening support platform detachably arranged on the square frame body. In this way, when the cooler of the shipped wind turbine is lower than the lower surface of the pedestal, multiple heightening support platforms are connected to the square frame body to increase the overall height of the transport trolley and prevent the cooler of the generator from contacting the ground and causing bump damage. In addition, a plurality of protective pads (such as rubber pads) made of elastic materials are arranged on the square frame body, thereby protecting the bottom structure of the generator during transportation.

[0022] 3. For the transport trolley provided by the present utility model, both the square frame body and the heightening support platform are made of high-strength, compression-resistant, and wear-resistant hot-rolled I-beams, ensuring the overall strength and reliability of the transport trolley. In addition, the mounting components of the transport trolley are located on the same horizontal plane and will not interfere with each other during use. Specifically, when in use, it is connected to the threaded holes at the bottom of the generator through bolts or extended bolts (when the heightening support platform is needed), and the operation is simple. At the same time, the transport trolley can be reused, has high practical value, and is convenient for popularization and use. Description of the Drawings

[0023] The drawings here are incorporated into the specification and form a part of this specification, and are used together with the specification to explain the principles of the present utility model.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present utility model's transport trolley;

[0026] Figure 2It is a schematic diagram of the overall structure of the utility model without a transport trolley;

[0027] Figure 3 It is a schematic diagram of the main structure of the square frame of the transport trolley of the utility model;

[0028] Figure 4 It is a schematic top view structure diagram of the transport trolley of the utility model;

[0029] Figure 5 It is a schematic diagram of the connection state between the first mounting component (first virtual circle) and the first - specification semi - direct - drive wind turbine in the transport trolley of the utility model;

[0030] Figure 6 It is a schematic diagram of the connection state between the second mounting component (second virtual circle) and the second - specification semi - direct - drive wind turbine in the transport trolley of the utility model;

[0031] Figure 7 It is a schematic diagram of the connection state between the third and fourth mounting components (third and fourth virtual circles) and the third and fourth - specification semi - direct - drive wind turbines in the transport trolley of the utility model.

[0032] Among them:

[0033] 1 is the main body of the square frame; 11 is the main cross - beam; 12 is the main longitudinal beam; 1 - 1 is the lifting hole; 111 is the fixing hole;

[0034] 2 is the first mounting component; 21 is the first support beam; 22 is the first connecting plate; 23 is the second support beam; 221 is the first through - hole; D1 is the first virtual circle; A is the first - specification semi - direct - drive wind turbine;

[0035] 3 is the second mounting component; 31 is the second connecting plate; 311 is the second through - hole; D2 is the second virtual circle; B is the first - specification semi - direct - drive wind turbine;

[0036] 4 is the third mounting component; 41 is the third connecting plate; 411 is the third through - hole; D3 is the third virtual circle; C is the first - specification semi - direct - drive wind turbine;

[0037] 5 is the fourth mounting component; 51 is the fourth through - hole; D4 is the fourth virtual circle; D is the first - specification semi - direct - drive wind turbine;

[0038] 6 is the height - increasing support platform;

[0039] 7 is the protective pad;

[0040] 8 is the tool box. Specific implementation mode

[0041] Here, exemplary embodiments will be described in detail, and their examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present utility model. On the contrary, they are merely examples of devices consistent with some aspects of the present utility model detailed in the appended claims.

[0042] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0043] Please refer to Figures 1 to 7 , a transport trolley for shipping multi-specification semi-direct drive wind turbines provided by an embodiment of the present utility model includes a square frame body 1, which is mainly fixedly spliced by two parallel main cross beams 11 and two parallel main longitudinal beams 12, such as by welding or integrally forming. Among them, four sets of mounting components are respectively provided on the square frame body 1. The four sets of mounting components include a first mounting component 2, a second mounting component 3, a third mounting component 4, and a fourth mounting component 5. Each set of mounting components is respectively provided with a plurality of through holes that match the number and positions of the threaded holes at the bottom of the machine base of the semi-direct drive wind turbine of the corresponding specification. And the centers of the corresponding plurality of through holes on each set of mounting components respectively form a virtual circle. The virtual circles formed by the corresponding through holes of the first mounting component 2, the second mounting component 3, the third mounting component 4, and the fourth mounting component 5 are concentric, and the diameter sizes are successively the first virtual circle D1, the second virtual circle D2, the third virtual circle D3, and the fourth virtual circle D4 from small to large. The four virtual circles respectively correspond to four different interface sizes, that is, from 1656 mm to 3400 mm, and the four sets of mounting components do not interfere with each other. Thus, by using only this one transport trolley of the present utility model, the transportation requirements of the generators of the semi-direct drive wind turbines of different specifications corresponding to four different interface sizes currently mainly produced by our company can be met.

[0044] Since the square frame body 1 is the main load-bearing member for carrying the semi-direct drive wind turbine, and the semi-direct drive wind turbine is generally heavy, in order to ensure the strength and stability of the square frame body 1. In the embodiment of the present utility model, the main cross beams 11 and the main longitudinal beams 12 are both made of the same type of hot-rolled I-beam, and a lifting hole 1-1 is opened at the middle position of the upper part of each main cross beam 11 and main longitudinal beam 12, which is convenient for moving the transport trolley by a lifting device during use; in addition, after splicing, the two sides of the main cross beam 11 in the square frame body 1 protrude relative to the main longitudinal beam 12, and fixing holes 111 are opened at the protruding positions on both sides of the main cross beam 11, which is convenient for connecting and fixing the transport trolley to the vehicle body of the transport vehicle by using a rope tool such as a hinge to ensure the safety and stability of the transportation process.

[0045] Specifically, in the embodiment of the present utility model, the first mounting assembly 2 includes two first support beams 21 that are parallel and arranged along the first direction. The two first support beams 21 are detachably arranged in the square frame body 1, and four first connecting plates 22 are fixedly arranged in a circular array on the upper surfaces of the two first support beams 21. A first through hole 221 that matches the number and position of the threaded holes at the bottom of the base of the first - specification semi - direct - drive wind turbine A is provided on each first connecting plate 22. The centers of the multiple first through holes 221 form a first virtual circle D1 with the geometric center of the square frame body 1 as the center of the circle. The diameter of the first virtual circle D1 is the same as the diameter of the virtual circle where the centers of the threaded holes at the bottom of the first - specification semi - direct - drive wind turbine A are located, both being 1656 mm.

[0046] Furthermore, in order to strengthen the strength of the first support beam 21 in the present utility model, the first mounting assembly 2 further includes a second support beam 23 that is detachably arranged in the square frame body 1 and arranged along the second direction, and the second support beam 23 intersects the two first support beams 21. In the present embodiment, the second support beam 23 intersects the two first support beams 21 orthogonally.

[0047] It should be noted that since the first mounting assembly 2 is detachably connected to the square frame body 1, when the interface size of the transported semi - direct - drive wind turbine is between the first virtual circle D1 and the second virtual circle D2, a virtual circle adapted to it can be formed by replacing the first mounting assembly 2, thereby expanding the applicable range of the transport trolley.

[0048] In the embodiment of the present utility model, the second mounting assembly 3 includes four second connecting plates 31. The four second connecting plates 31 are respectively installed on the outer sides of the middle parts of the two main cross - beams 11 and the two main longitudinal beams 12 of the square frame body 1. A second through hole 311 that matches the number and position of the threaded holes at the bottom of the base of the second - specification semi - direct - drive wind turbine B is provided on each second connecting plate 31. The multiple second through holes 311 form a second virtual circle D2 with the geometric center of the square frame body 1 as the center of the circle. The diameter of the second virtual circle D2 is the same as the diameter of the virtual circle where the centers of the threaded holes at the bottom of the second - specification semi - direct - drive wind turbine B are located, and the diameter of D2 is greater than the diameter of D1.

[0049] In the embodiment of the present utility model, the third mounting assembly 4 includes four third connecting plates 41, and the four third connecting plates 41 are respectively mounted on the outer sides of two main cross beams 11 or two main longitudinal beams 12 of the square frame body 1. Each main cross beam 11 or main longitudinal beam 12 is provided with two third connecting plates 41, and the two third connecting plates 41 provided on each main cross beam 11 or main longitudinal beam 12 are located on both sides of the second connecting plate 31. Each third connecting plate 41 is provided with third through holes 411 that match the number and positions of the threaded holes at the bottom of the base of the third specification semi-direct drive wind turbine C. The multiple third through holes 411 form a third virtual circle D3 with the geometric center of the square frame body 1 as the center of the circle. The diameter of the third virtual circle D3 is the same as the diameter of the virtual circle where the centers of the threaded holes at the bottom of the third specification semi-direct drive wind turbine C are located, and the diameter of D3 is greater than the diameter of D2.

[0050] In the embodiment of the present utility model, the fourth mounting assembly 5 includes multiple fourth through holes 51 opened on the main cross beams 11 and main longitudinal beams 12. The number and positions of the fourth through holes 51 match the number and positions of the threaded holes at the bottom of the base of the fourth specification semi-direct drive wind turbine D. The multiple fourth through holes 51 form a fourth virtual circle D4 with the geometric center of the square frame body 1 as the center of the circle. The diameter of the third virtual circle D4 is the same as the diameter of the virtual circle where the centers of the threaded holes at the bottom of the fourth specification semi-direct drive wind turbine D are located, both being 3400 mm, and the diameter of D4 is greater than the diameter of D3.

[0051] It should be noted that in the embodiment of the present utility model, the diameter dimensions of the four virtual circles are set and matched according to the virtual circle where the threaded holes at the bottom of the semi-direct drive wind turbines actually produced by our company are located. It is only an example and no specific dimension limitations are made. During actual use, the positions of the corresponding connecting plates and the size specifications of the virtual circles can be set according to the threaded holes at the bottom of the transported semi-direct drive wind turbine.

[0052] Preferably, the transport trolley of the present utility model is connected to the semi-direct drive wind turbine to be transported through fasteners (such as bolt assemblies). Therefore, in order to facilitate the storage of fasteners, a tool box 8 can be provided on the outer side of the main cross beam 11 or main longitudinal beam 12 in this embodiment. Preferably, as shown in the appendix Figure 3 As shown, a tool box 8 made of metal material and bent is provided on the side of the main longitudinal beam 12, aiming to store the used fasteners to prevent loss and avoid rain erosion. In addition, the transport trolley further includes multiple protective pads 7, and the protective pads 7 are made of elastic materials and are evenly distributed between the square frame body 1 and the semi-direct drive wind turbine, for protecting the bottom structure of the semi-direct drive wind turbine.

[0053] The transport trolley in the embodiment of the present utility model further includes a plurality of heightening support platforms 6, which are evenly distributed on the top of the square frame body 1 and are detachably connected to the square frame body 1, and are used to increase the height of the transport trolley to prevent the generator cooler of some structures from contacting the ground and causing bumps.

[0054] Take Figure 6 as an example, the conditions for installing the heightening support platform 6 in the embodiment of the present utility model are as follows:

[0055] The height of the square frame body 1 is K;

[0056] The height difference between the bottom of the generator cooler motor and the bottom of the generator base is H;

[0057] The height of the heightening support platform 6 is M;

[0058] When the generator corresponding to the second virtual circle D2, the third virtual circle D3, and the fourth virtual circle D4 satisfies H≥K, it is necessary to install the heightening support platform 6 on the square frame body 1 to achieve K + M>H, so as to avoid the generator cooler directly contacting the ground during transportation and causing bump damage.

[0059] Check the conditions for the cooler of the semi-direct drive wind turbine not to interfere with the square frame body 1:

[0060] The maximum contour length / width dimension N of the square frame body 1;

[0061] The closest distance L between the cooler contour and the central axis of the generator;

[0062] When L>N / 2, the transport trolley of the present utility model can be used for auxiliary transportation.

[0063] To further illustrate the efficacy of the transport trolley of the present utility model, it is described in detail in combination with the wind turbines with D1~D4 interface dimensions (D4>D3>D2>D1):

[0064] Shipping the wind turbine with D1 interface dimension (small virtual circle interface dimension): First, connect the first installation component 2 to the square frame body 1, and place the protective pad 7 above the first connecting plate 22; then hoist the first-specification semi-direct drive wind turbine A above the transport trolley, and align the first through hole 221 on the transport trolley with the threaded hole at the bottom of the generator, and then lower it and connect and tighten the torque with bolts, as Figure 5 shown; finally, hoist the whole to the transport vehicle, place it in the middle, and use the hinge to pass through the fixing hole 111 of the transport trolley and connect it to the vehicle body.

[0065] Wind turbine with shipping D2 interface dimensions (cooler below the bottom surface of the machine base): At this time, it is necessary to increase the height of the transport trolley. Therefore, first connect 8 heightening support platforms 6 to the top of the square frame body 1, and place protective pads 7 on the upper surfaces of each heightening support platform 6; then hoist the second-specification semi-direct-drive wind turbine B above the transport trolley, align the second through-hole 311 on the transport trolley with the threaded hole at the bottom of the generator, and then lower and connect with extended bolts and tighten the torque, as Figure 6 shown; finally, hoist the whole to the transport vehicle, place it in the middle, and connect it to the vehicle body by passing a hinge through the fixing hole 111 of the transport trolley.

[0066] Wind turbine with shipping D3 / D4 interface dimensions: First, use the third through-hole 411 or the fourth through-hole 51 provided on the square frame body 1 to hoist the corresponding third-specification semi-direct-drive wind turbine C or the fourth-specification semi-direct-drive wind turbine D above the transport trolley, align the third through-hole 411 or the fourth through-hole 51 on the transport trolley with the threaded hole at the bottom of the corresponding generator, and then lower and connect with bolts and tighten the torque, as Figure 7 shown; finally, hoist the whole to the transport vehicle, place it in the middle, and connect it to the vehicle body by passing a hinge through the fixing hole 111 of the transport trolley.

[0067] The above are only the specific embodiments of the present invention, which enable those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0068] It should be understood that the present invention is not limited to the above-described content and can be modified and changed without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A transport trolley for shipping semi-direct drive wind turbines of multiple specifications, characterized in that: The transport trolley comprises a square frame body (1) formed by fixedly splicing two parallel main cross beams (11) and two parallel main longitudinal beams (12); Wherein, a first mounting assembly (2), a second mounting assembly (3), a third mounting assembly (4) and a fourth mounting assembly (5) are respectively arranged on the square frame body (1), and each mounting assembly is respectively provided with a plurality of through holes matching the number and position of threaded holes at the bottom of a base of a semi-direct-drive wind turbine generator of corresponding specifications, and the corresponding plurality of through holes on each mounting assembly respectively form a virtual circle, and the virtual circles formed by the corresponding through holes of the first mounting assembly (2), the second mounting assembly (3), the third mounting assembly (4) and the fourth mounting assembly (5) are concentric, and the diameter sizes are, from small to large, the first virtual circle (D1), the second virtual circle (D2), the third virtual circle (D3) and the fourth virtual circle (D4), respectively, for fixing, installing and transporting a semi-direct-drive wind turbine generator of corresponding specifications and interface sizes.

2. The transport trolley for shipping multi-specification semi-direct drive wind turbines according to claim 1, characterized in that: The first mounting assembly (2) comprises two first support beams (21) which are parallel and arranged along a first direction, the two first support beams (21) being detachably arranged in a square frame body (1), and four first connecting plates (22) being fixedly arranged at intervals on the upper surfaces of the two first support beams (21), each of the first connecting plates (22) being provided with a first through hole (221) whose number and position match the threaded holes at the bottom of a base of a first specification semi-direct-drive wind turbine (A), and the plurality of first through holes (221) forming a first virtual circle (D1) with the geometric center of the square frame body (1) as the center.

3. The transport trolley for shipping multi-specification semi-direct drive wind turbines according to claim 2, characterized in that: The first mounting assembly (2) further comprises a second support beam (23) which is detachably arranged in the square frame body (1) and arranged along a second direction, and the second support beam (23) intersects with the two first support beams (21).

4. The transport trolley for shipping multi-specification semi-direct drive wind turbines according to claim 1, characterized in that: The second mounting assembly (3) comprises four second connecting plates (31), the four second connecting plates (31) being respectively mounted on the outer sides of the middle parts of two main cross beams (11) and two main longitudinal beams (12) of the square frame body (1), and each of the second connecting plates (31) is provided with a second through hole (311) matching the number and position of the threaded holes at the bottom of the base of the second specification semi-direct-drive wind turbine (B), and the plurality of second through holes (311) form a second virtual circle (D2) with the geometric center of the square frame body (1) as the center.

5. The transport trolley for shipping multi-specification semi-direct drive wind turbines according to claim 4, characterized in that: The third mounting assembly (4) comprises four third connecting plates (41), the four third connecting plates (41) being respectively mounted on the outside of two main cross beams (11) or two main longitudinal beams (12) of the square frame body (1), each of the main cross beams (11) or main longitudinal beams (12) being provided with two third connecting plates (41), and the two third connecting plates (41) provided on each of the main cross beams (11) or main longitudinal beams (12) are located on both sides of the second connecting plate (31), each of the third connecting plates (41) being provided with a third through hole (411) matching the number and position of the threaded holes at the bottom of the base of a semi-direct-drive wind turbine (C) of a third specification, and the plurality of third through holes (411) forming a third virtual circle (D3) with the geometric center of the square frame body (1) as the center.

6. The transport trolley for shipping multi-specification semi-direct drive wind turbines according to claim 1, characterized in that: The fourth mounting assembly (5) comprises a plurality of fourth through holes (51) formed on the main cross beam (11) and the main longitudinal beam (12); the number and position of the fourth through holes (51) match the number and position of threaded holes at the bottom of a base of a fourth specification semi-direct-drive wind turbine (D); the plurality of fourth through holes (51) form a fourth virtual circle (D4) with the geometric center of the square frame body (1) as the center.

7. The transport trolley for shipping multi-specification semi-direct drive wind turbines according to claim 1, characterized in that: The transport trolley further comprises a plurality of height-increasing support platforms (6), which are evenly arranged on the top of the square frame body (1) and are detachably connected to the square frame body (1) to increase the height of the transport trolley.

8. The transport trolley for shipping multi-specification semi-direct drive wind turbines according to any one of claims 1 to 7, characterized in that: The transport trolley further comprises a plurality of protective pads (7), and the protective pads (7) are made of elastic material and are used to protect the bottom structure of the semi-direct-drive wind turbine.

9. The transport trolley for shipping multi-specification semi-direct drive wind turbines according to claim 8, characterized in that: The main cross beam (11) and the main longitudinal beam (12) are both made of hot-rolled I-beams of the same type, and a tool box (8) is arranged on the outside of the main cross beam (11) or the main longitudinal beam (12).

10. The transport trolley for shipping multi-specification semi-direct drive wind turbines according to claim 8, characterized in that: A lifting hole (1-1) is provided at the middle position of the upper part of each main cross beam (11) and main longitudinal beam (12) for transferring and lifting the transport trolley. At the same time, fixing holes (111) are provided on both sides of each main cross beam (11) for connecting and fixing the transport trolley to the body of the transport vehicle.

Images