Wind power transport vehicle with load bearing device

Abstract

This invention discloses a wind turbine transport vehicle with a load-bearing device, comprising: a chassis system including two track beams positioned on the left and right sides in the transverse direction and a frame connecting the two track beams, with tracks mounted on the two track beams; a transport platform, disposed on the frame and movably arranged relative to the frame in the longitudinal direction; a blade lifting fixture, disposed on the transport platform and configured to install wind turbine blades; a load-bearing device, disposed at the lower rear end of the blade lifting fixture and retractably arranged in the vertical direction, rotatably arranged in the horizontal direction, and movably arranged relative to the blade lifting fixture in the longitudinal direction; and a power system, disposed at the rear end of the frame, for providing power for the movement of the entire vehicle. The load-bearing device of this invention can dynamically adjust the vehicle's center of gravity and grounding angle, greatly ensuring the safety of the wind turbine tracked transport vehicle when transporting ultra-large blade equipment on steep slopes.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery, and more specifically to a wind power transport vehicle with a load-bearing device. Background Technology

[0002] With the daily surge in electricity consumption, wind energy, as a clean and renewable resource, is gradually occupying a place in the composition of power generation energy. Mountainous areas are rich in wind resources, and with the trend of wind power development, more and more wind farms will be built in mountainous environments, generating greater demand and requirements for wind power transportation equipment.

[0003] To maximize the efficiency of wind power generation per unit, the future market will primarily focus on high-power products ranging from 4MW to 6MW, with turbine heights of 171m to 195m and blade lengths of 89m to 100m. Considering the structural characteristics of the blade lifting fixtures used for transporting wind turbine blades, the overall length of the lifting fixtures, exceeding 20 meters, is very long due to the need to balance the center of gravity offset of ultra-large wind turbine blades. This results in a significant difference in the center of gravity of the entire turbine before and after blade removal. Furthermore, the complex mountainous environment, with its steep slopes and poor road conditions, means that existing wind power transportation equipment cannot adapt to the differences in center of gravity under different transportation conditions, posing a significant threat to transportation safety. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wind power transport vehicle with a load-bearing device to solve the problems of existing mountain wind power transport equipment being unable to adapt to differences in center of gravity under different transport conditions and having low transport safety.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following solution:

[0006] This invention provides a wind power transport vehicle with a load-bearing device, comprising:

[0007] The chassis system includes two track beams located on the left and right sides in the lateral direction and a frame connecting the two track beams, with tracks mounted on the two track beams;

[0008] A transport platform is mounted on the vehicle frame and is movably disposed relative to the vehicle frame in the longitudinal direction;

[0009] A blade lifting fixture is mounted on the transport platform and configured to install wind turbine blades;

[0010] The load-bearing device is disposed at the lower end of the tail of the blade lifting fixture and is telescopically disposed in the vertical direction, rotatably disposed in the horizontal direction, and movable relative to the blade lifting fixture in the longitudinal direction.

[0011] The power system, located at the rear of the chassis, provides power for the movement of the entire vehicle.

[0012] Preferably, the load-bearing device includes a slider, a load-bearing bracket, and a load-bearing wheel arranged sequentially from top to bottom; the slider includes a first slider rotatably connected to the load-bearing bracket and a second slider slidably connected to a slide rail located at the lower end of the tail of the blade lifting fixture; a pushing cylinder is installed between the first slider and the blade lifting fixture; two second sliders are provided and fixedly connected to both sides of the first slider.

[0013] Preferably, the load-bearing device further includes a rotary cylinder, and two sets of rotary cylinders are provided. The two ends of the rotary cylinders are respectively rotatably connected to the load-bearing bracket and the second slider. The lower end of the first slider is provided with a first rotating shaft, and the middle part of the load-bearing bracket is provided with a bearing, shaft end cap and copper gasket that are matched and connected to the first rotating shaft.

[0014] Preferably, it also includes a rubber stop fixed to the lower end of the second slider. The rubber stop is fixed between the load-bearing bracket and the connection point between the rotating cylinder and the second slider, and is used to limit the rotation of the load-bearing bracket.

[0015] Preferably, the load-bearing wheels are provided in two sets, which are respectively placed on both sides of the lower end of the load-bearing bracket; the lower end of the load-bearing bracket is provided with a second rotating shaft, and the bracket of the load-bearing wheels is provided with a copper sleeve and shaft end cap that are matched and connected to the second rotating shaft.

[0016] Preferably, the load-bearing wheel is connected to the power system via a hydraulic motor reducer, which is used to traction the blade lifting device.

[0017] Preferably, it also includes a telescopic hydraulic cylinder, with a load-bearing bracket and a mounting plate fixedly connected to both ends of the telescopic hydraulic cylinder, and the mounting plate fixedly connected to the second rotating shaft.

[0018] Preferably, the telescopic cylinder is equipped with guide threaded rods and limit nuts around its perimeter to restrict the rotation of the telescopic cylinder.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The load-bearing device of the present invention, combined with the tracked chassis system, can dynamically adjust the center of gravity of the vehicle according to the rotation angle of the blade lifting fixture and the movement of the transport platform; the wheel-track combination structure is adopted, and a telescopic mechanism is added to the load-bearing device, so that the height of the two load-bearing wheels can be reasonably adjusted when traveling to different road conditions, thereby ensuring the stability of the center of gravity of the vehicle, which greatly ensures the safety of wind power tracked transport vehicles transporting ultra-large blade equipment on steep slopes. At the same time, the load-bearing wheels are connected to the power system, which can actively drive the blade lifting fixture to rotate, saving the central rotating body and reducing costs. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a wind power transport vehicle with a load-bearing device provided in an embodiment of the present invention;

[0021] Figure 2 This is a structural schematic diagram of the chassis system and transportation platform of a wind power transport vehicle with a load-bearing device provided in an embodiment of the present invention;

[0022] Figure 3 This is a top view of the load-bearing device in a wind power transport vehicle with a load-bearing device, provided in an embodiment of the present invention.

[0023] Figure 4 This is a front view structural diagram of the load-bearing device in a wind power transport vehicle with a load-bearing device according to an embodiment of the present invention;

[0024] Figure 5 This is a partial cross-sectional schematic diagram of the load-bearing device in a wind power transport vehicle with a load-bearing device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection structure between the load-bearing wheel and the load-bearing bracket in a wind power transport vehicle with a load-bearing device, provided in an embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the connection structure between the load-bearing device and the blade lifting fixture in a wind power transport vehicle with a load-bearing device, provided in an embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram of the state of the load-bearing device moving under the blade lifting fixture in a wind power transport vehicle with a load-bearing device according to an embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the rotating state of the load-bearing device traction blade lifting fixture in a wind power transport vehicle with a load-bearing device, provided in an embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the vertical extension and retraction of the load-bearing device in a wind power transport vehicle with a load-bearing device, provided in an embodiment of the present invention.

[0030] In the diagram: 1. Load-bearing device; 2. Blade lifting fixture; 3. Chassis system; 4. Power system; 5. Blade; 6. Transport platform; 7. Frame; 8. Right track beam; 9. Left track beam; 10. Slider; 11. Load-bearing bracket; 12. Load-bearing wheel; 13. Telescopic cylinder; 14. Pushing cylinder; 15. Rotating cylinder; 16. Rubber stop; 17. Slide rail; 18. Hydraulic motor reducer; 19. First slider; 20. Guide threaded rod; 21. Mounting plate; 22. First rotating shaft; 23. Second rotating shaft; 24. Bearing; 25. Shaft end cover; 26. Copper gasket; 27. Copper sleeve. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] like Figures 1 to 7 As shown, this embodiment provides a wind turbine transport vehicle with a load-bearing device, comprising a chassis system 3, a transport platform 6, a blade lifting fixture 2, a load-bearing device 1, and a power system 4. The chassis system 3 includes two track beams positioned on the left and right sides in the transverse direction and a frame 7 connecting the two track beams, with tracks mounted on the two track beams; the transport platform 6 is mounted on the frame 7 and is movably mounted relative to the frame 7 in the longitudinal direction; the blade lifting fixture 2 is mounted on the transport platform 6 and configured to install wind turbine blades 5; the load-bearing device 1 is located at the lower rear end of the blade lifting fixture 2 and is retractable in the vertical direction, rotatable in the horizontal direction, and movably mounted relative to the blade lifting fixture 2 in the longitudinal direction. The vehicle is movably mounted in the longitudinal direction. The power system 4 is located at the rear end of the frame 7 and is used to provide power for the movement of the entire vehicle. The movements include the walking of the chassis system 3, the movement of the transport platform 6, the lifting and lowering of the blade lifting fixture 2, and the extension and retraction of the cylinders of the rotating cylinder 15, pushing cylinder 14, and telescopic cylinder 13 in the load-bearing device 1, as well as the rotation of the load-bearing wheel 12. The movements are coordinated with each other to dynamically adjust the center of gravity of the entire vehicle and ensure the safety of the wind power tracked transport vehicle in transporting ultra-large blade equipment on steep mountain slopes.

[0035] Specifically, the frame 7 connects the left track beam 9 and the right track beam 8 to form the chassis system 3. The load-bearing device 1 consists of a load-bearing bracket 11, a telescopic cylinder 13, a load-bearing wheel 12, a pushing cylinder 14, a rotating cylinder 15, a first rotating shaft 22, a second rotating shaft 23, a slider 10, and rubber stops 16. The load-bearing bracket 11 and the load-bearing wheel 12 are sequentially arranged at the lower end of the slider 10. When the transport platform 6 moves relative to the chassis system 3, the load-bearing device 1 can also move with the transport platform 6. When the vehicle moves forward, the load-bearing device 1 moves forward with the vehicle to ensure that the center of gravity of the vehicle is placed on the entire load-bearing device 1 and the tracked chassis system 3, ensuring reliability. Moving backward can also ensure that the center of gravity is within a safe range. The slider 10 includes a first slider 19 rotatably connected to the load-bearing bracket 11 and a second slider slidably connected to the slide rail 17 located at the lower end of the tail of the blade lifting fixture 2. The first slider 19 is arranged laterally, and the second slider consists of two pieces arranged longitudinally and fixedly connected to both sides of the first slider 19. The push cylinder 14 is installed between the slider 10 and the blade lifting fixture 2 and is used to pull the load-bearing device 1 to move relative to the blade lifting fixture 2 in the longitudinal direction, thereby obtaining different ground angles and improving the passability of the whole vehicle. The lower end of the first slider 19 is provided with a first rotating shaft 22. The middle part of the load-bearing bracket 11 is provided with a bearing 24, a shaft end cover 25, and a copper washer 26. The first rotating shaft 22 is rotatably connected in the bearing 24 and the copper washer 26, forming a first rotating structure. The shaft end cover 25 is fixed to the load-bearing bracket 11 by bolts. The use of a double bearing structure plus a copper washer structure can improve the stress on the connection structure. Ordinary bearings are selected to reduce costs. The vertical stress is distributed to the upper and lower copper washer 26, and the radial force is transmitted to the load-bearing bracket 11 through the bearing 24, reducing the bearing 26 bearing capacity. 4. To reduce the risk of damage and improve structural reliability, two sets of rotary cylinders 15 are provided. The two ends of the rotary cylinders 15 are rotatably connected to the load-bearing bracket 11 and the second slider, respectively. In conjunction with the first rotating structure, the load-bearing bracket 11 is pulled on the left and right sides to achieve rotation at different angles (the rotation angle is adjusted by the rotary cylinders 15). At the same time, in order to prevent excessive rotation and damage to the hydraulic cylinders, a rubber stop 16 is fixed at the lower end of the second slider. The rubber stop 16 is fixed between the load-bearing bracket 11 and the connection point between the rotary cylinder 15 and the second slider to limit the rotation of the load-bearing bracket 11.Two sets of load-bearing wheels 12 are provided, located on both sides of the lower end of the load-bearing bracket 11. A second rotating shaft 23 is provided at the lower end of the load-bearing bracket 11. A copper sleeve 27 and a shaft end cap 25 are provided on the bracket of the load-bearing wheel 12. The copper sleeve 27 has an oil groove inside, which can be lubricated with lubricating oil. The copper sleeve 27 can act as a bearing. The second rotating shaft 23 is rotatably connected to the copper sleeve 27 to form a second rotating structure. The shaft end cap 25 is fixed to the bracket of the load-bearing wheel 12 with bolts. The load-bearing wheel 12 is connected to the power system 4 through a hydraulic motor reducer 18. The hydraulic power transmitted from the power system 4 to the motor reducer 18 via hydraulic hoses drives the load-bearing wheel 12 to move. It can actively drive the blade lifting fixture 2 to rotate in the horizontal plane by coordinating the traction of the load-bearing wheel 12 with the rotation of the load-bearing bracket 11 and the load-bearing wheel 12. This is used to keep the center of gravity of the whole vehicle within a safe range when the blade lifting fixture 2 needs to rotate to avoid obstacles or reduce the turning radius, effectively improving the safety of the whole vehicle. The telescopic cylinder 13 is fixedly connected to the load-bearing bracket 11 and the mounting plate 21 at both ends. The mounting plate 21 is fixedly connected to the second rotating shaft 23 by bolt assembly. The telescopic cylinder 13 is used to extend and retract in the vertical direction when the vehicle is traveling on uneven terrain in mountainous areas, thereby adjusting the height of the load-bearing wheels 12 on both sides to adapt to different road surfaces and improve the passability of the whole machine. In addition, guide thread rods 20 and limit nuts are also installed around the outer perimeter of the telescopic cylinder 13 to limit the rotation of the telescopic cylinder.

[0036] Working principle:

[0037] The wind power transport vehicle with a load-bearing device has the following features: Figures 8 to 10 The three working states are shown below:

[0038] (i) When the vehicle needs to go uphill, the horizontal position of the load-bearing device 1 can be adjusted to better adapt to different slopes and effectively improve the vehicle's safety and passability.

[0039] It should be understood that this working state can be coordinated with the working state of the transport platform 6 moving forward and backward, driving the blade lifting fixture 2 and the load-bearing device 1 to move forward and backward, without causing interference.

[0040] (ii) When the blade lifting fixture 2 needs to rotate to avoid obstacles or reduce the turning radius, the load-bearing device 1 will drive the fixture to rotate together, always keeping the center of gravity of the vehicle within a safe range, effectively improving the safety of the vehicle. The rotation range is (-140° to 140°).

[0041] (iii) When the vehicle is on uneven ground, the height of the rear load-bearing device can be adjusted by telescopic hydraulic cylinders to better adapt to uneven ground and effectively improve the safety and passability of the vehicle.

[0042] The above three working states can be combined to adapt to the transportation of wind power equipment in complex mountainous environments and ensure the safety of wind power tracked transport vehicles transporting ultra-large blade equipment on steep mountain slopes.

[0043] In summary, the load-bearing device 1, combined with the tracked chassis system 3, can dynamically adjust the center of gravity of the entire vehicle according to the rotation angle of the blade lifting fixture 2 and the movement of the transport platform 6. By adopting a wheel-track combination structure and adding a telescopic mechanism to the load-bearing device 1, the height of the two load-bearing wheels 12 can be adjusted reasonably when traveling on different road conditions, thereby ensuring the stability of the overall center of gravity and greatly guaranteeing the safety of the wind power tracked transport vehicle in transporting ultra-large blade equipment on steep slopes. Simultaneously, the load-bearing wheels 12 are connected to the power system 4, which can actively drive the blade lifting fixture 2 to rotate, saving the need for a central rotating body and reducing costs.

[0044] It should be understood that all content not described in detail in the embodiments of the present invention is prior art.

[0045] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A windmill transport vehicle with a load bearing device, characterized in that, The wind turbine blade lifting device comprises a chassis system, a transport platform, a blade lifting tool, a load bearing device and a power system. The chassis system comprises two track beams arranged on the left and right sides in the transverse direction and a vehicle frame connecting the two track beams, and a track is arranged on each track beam. The transport platform is arranged on the vehicle frame and is movable in the longitudinal direction relative to the vehicle frame. The blade lifting tool is arranged on the transport platform and is configured to mount a wind turbine blade. The load bearing device is arranged at the lower end of the tail of the blade lifting tool and is arranged to be telescopically movable in the vertical direction, rotatable in the horizontal direction and movable in the longitudinal direction relative to the blade lifting tool. The power system is arranged at the rear end of the vehicle frame and is used to provide power for the movement of the whole vehicle.

2. The windmill transport vehicle with a bearing device according to claim 1, characterized in that, The load bearing device comprises a slider, a load bearing bracket and a load bearing wheel arranged in sequence from top to bottom.

3. The windmill transport vehicle with a bearing device according to claim 2, characterized in that, The slider comprises a first slider rotatably connected with the load bearing bracket and a second slider slidingly connected with a slide rail arranged at the lower end of the tail of the blade lifting tool.

4. The windmill transport vehicle with a bearing device according to claim 3, characterized in that, A push cylinder is arranged between the first slider and the blade lifting tool.

5. The windmill transport vehicle with a bearing device according to claim 2, characterized in that, The second slider is arranged in two groups and is fixedly connected on the two sides of the first slider.

6. The windmill transport vehicle with a bearing device according to claim 2, characterized in that, The load bearing device further comprises a rotary oil cylinder arranged in two groups.

7. The windmill transport vehicle with a bearing device according to claim 5, characterized in that, The two ends of the rotary oil cylinder are rotatably connected with the load bearing bracket and the second slider, respectively.

8. A windmill transport vehicle with a load bearing device according to claim 7, characterized in that A first rotating shaft is arranged at the lower end of the first slider. A bearing, an end cover and a copper gasket are arranged in the middle of the load bearing bracket and are matched with the first rotating shaft. A rubber block is fixedly arranged at the lower end of the second slider. The rubber block is arranged between the load bearing bracket and the connecting point of the rotary oil cylinder and the second slider and is used to limit the rotation of the load bearing bracket. The load bearing wheel is arranged in two groups and is arranged on the two sides of the lower end of the load bearing bracket. A second rotating shaft is arranged at the lower end of the load bearing bracket. A copper sleeve and an end cover are arranged on the bracket of the load bearing wheel and are matched with the second rotating shaft. The load bearing wheel is connected with the power system through a hydraulic motor reducer and is used to drive the blade lifting tool. A telescopic oil cylinder is arranged around the telescopic oil cylinder. A guide threaded rod and a limiting nut are arranged around the telescopic oil cylinder to limit the rotation of the telescopic oil cylinder.

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