Transport vehicle

Abstract

The invention relates to the technical field of transportation equipment, and provides a transportation vehicle which is used for transporting components of blades of a wind generating set, the transportation vehicle comprises at least two transportation units which are arranged side by side in the first direction, each transportation unit comprises a supporting part and a fixing assembly, and the supporting parts of every two adjacent transportation units are detachably connected; the fixing assemblies are arranged on the supporting parts, and the fixing assemblies of every two adjacent conveying units are arranged side by side in the first direction. Wherein each fixing assembly comprises two fixing frames which are arranged in the second direction in a spaced mode, the distance between every two adjacent fixing frames in each fixing assembly is adjustable in the second direction, and the practicability of the transport vehicle can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of transportation equipment, and in particular to a transportation vehicle. Background Art

[0002] Wind turbine blades are important components of wind turbine generators. Large wind turbine blades consist of webs, main beams, and shells. The webs and main beams are made separately on corresponding molds. Due to actual production space limitations, the main beam and web molds and shell molds are often not in the same workshop and need to be transported to the shell mold workshop before use. The shapes and sizes of the main beams or webs are different, and the sizes of the main beams and webs of wind turbine blades of different models are also different. Existing transport vehicles have low adaptability to components of different sizes and types, and poor practicality. Summary of the invention

[0003] An embodiment of the present application provides a transport vehicle, aiming to improve the practicality of the transport vehicle.

[0004] An embodiment of the present application provides a transport vehicle for transporting components of wind turbine blades, the transport vehicle comprising at least two transport units arranged side by side along a first direction, the transport units comprising a support portion and a fixing assembly, the support portions of two adjacent transport units being detachably connected; the fixing assembly being arranged on the support portion, the fixing assemblies of two adjacent transport units being arranged side by side along the first direction; wherein each fixing assembly comprises two fixing frames spaced apart along a second direction, and the spacing between two adjacent fixing frames in each fixing assembly along the second direction is adjustable, and the first direction and the second direction intersect.

[0005] According to an embodiment of the present application, the support portion is provided with a plurality of mounting portions, and the plurality of mounting portions are spaced apart along the second direction. At least one fixing frame in each fixing assembly is detachably connected to at least one of the plurality of mounting portions, so that the distance between two adjacent fixing frames in each fixing assembly can be adjusted.

[0006] According to an embodiment of the present application, at least two groups of fixing components are disposed on the support portion, and the at least two groups of fixing components are spaced apart along the second direction.

[0007] According to an embodiment of the present application, each transport unit also includes an operating platform, which is fixedly connected between two adjacent groups of fixed components along the second direction. The operating platform and the support part of at least one transport unit are spaced apart along the third direction, and the first direction, the second direction and the third direction intersect each other.

[0008] According to an embodiment of the present application, the operating platform extends along a first direction, and the operating platforms of two adjacent transport units are detachably connected.

[0009] According to an embodiment of the present application, the transport unit includes a plurality of interconnected first transport units and a plurality of second transport units located on at least one side of the plurality of first transport units along a first direction, the distance between the operating platform and the support part of the first transport unit is equal, and the distance between the operating platform and the support part of the plurality of second transport units gradually decreases along a direction away from the first transport unit.

[0010] According to an embodiment of the present application, the transport unit also includes a moving wheel, which is rotatably connected to the side of the support portion away from the fixed component through a rotating shaft, and the axial direction of the rotating shaft is parallel to the third direction, and the first direction, the second direction and the third direction intersect each other.

[0011] According to an embodiment of the present application, the moving wheels of one of the two adjacent transport units are hydraulically driven wheels, and the moving wheels of the other one are motor-driven wheels.

[0012] According to an embodiment of the present application, the transport vehicle also includes a controller and a line marking recognition module. The controller is communicatively connected with the moving wheel and the line marking recognition module. The line marking recognition module is used to obtain ground line marking information and send the line marking information to the controller. The controller is used to control the rotation angle of the moving wheel according to the line marking information.

[0013] According to an embodiment of the present application, the transport unit also includes a distance detection module, which is used to detect the distance between surrounding objects and the transport unit and send the distance information to the controller. The controller is configured to compare the distance with a preset value. When the distance is less than the preset value, the controller controls the moving wheel to stop running.

[0014] In an embodiment of the present application, the support parts of two adjacent transport units are detachably connected so that the number of transport units can be adjusted according to the length of different blade components. When the size of the component along the first direction is longer, multiple transport units are arranged side by side along the first direction to increase the length of the transport vehicle, and the support parts of two adjacent transport units are connected. When the size of the component along the first direction is shorter, the support parts of some transport units can be removed, thereby reducing the number of transport units to reduce the length of the transport vehicle, so that the transport vehicle can adapt to components of different lengths. The spacing between two adjacent fixing frames in each fixing assembly along the second direction can be adjusted. When the size of the component along the second direction is larger, the spacing between two adjacent fixing frames along the second direction can be increased. When the size of the component along the second direction is smaller, the spacing between two adjacent fixing frames along the second direction can be reduced, so that the fixing frame can adapt to different component sizes. When the size of each position of the component along the first direction is different along the second direction, the spacing between two adjacent fixing frames in each fixing assembly along the second direction can be adjusted independently, so that the transport vehicle can be suitable for components of different shapes, which is conducive to improving the practicality of the transport vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0016] Figure 1 It is a structural schematic diagram of a transport vehicle provided in an embodiment of the present application; Figure 2 This is a schematic structural diagram of a transport vehicle provided by an embodiment of the present application from another perspective; Figure 3 This is another perspective structural schematic diagram of a transport vehicle provided in an embodiment of the present application; Figure 4 is a structural schematic diagram of a support portion provided in an embodiment of the present application; Figure 5 is a schematic structural diagram of another support portion provided in an embodiment of the present application; Figure 6 This is a schematic structural diagram from another perspective of a transport vehicle provided in an embodiment of the present application.

[0017] Explanation of the accompanying drawings: 10, transport unit; 11, first transport unit; 12, second transport unit; 100, support part; 110, installation part; 200, fixing assembly; 210, fixing frame; 211, first fixing frame; 212, second fixing frame; 213, third fixing frame; 214, fourth fixing frame; 300, operating platform; 400, moving wheel; 401, hydraulic drive wheel; 402, motor drive wheel; 410, rotating shaft; 510, marking recognition module; 520, distance detection module; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0018] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0019] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0021] Transporting wind turbine blades includes a variety of components, including webs, main beams, etc. The webs and main beams and other components have different shapes and sizes and need to be transported separately by different transport vehicles. The present application proposes a transport vehicle, the length of which and the spacing between fixed frames can be adjusted so that the transport vehicle can transport a variety of components of the blades.

[0022] like Figures 1 to 3 As shown, an embodiment of the present application proposes a transport vehicle for transporting components of wind turbine blades, the transport vehicle includes at least two transport units 10 arranged side by side along a first direction X, the transport unit 10 includes a support portion 100 and a fixing assembly 200, the support portions 100 of two adjacent transport units 10 are detachably connected; the fixing assembly 200 is arranged on the support portion 100, and the fixing assemblies 200 of two adjacent transport units 10 are arranged side by side along the first direction X; wherein each fixing assembly 200 includes two fixing frames 210 arranged at intervals along a second direction Y, and the spacing between two adjacent fixing frames 210 in each fixing assembly 200 along the second direction Y is adjustable, and the first direction X and the second direction Y intersect.

[0023] In this embodiment, at least two transport units 10 are arranged side by side along the first direction X, and the support parts 100 of two adjacent transport units 10 are detachably connected, so that the number of transport units 10 can be adjusted according to the length of different blade components. When the size of the component along the first direction X is longer, multiple transport units 10 are arranged side by side along the first direction X to increase the length of the transport vehicle, and the support parts 100 of two adjacent transport units 10 are connected. When the size of the component along the first direction X is shorter, the support parts 100 of some transport units 10 can be removed, thereby reducing the number of transport units 10 to reduce the length of the transport vehicle, so that the transport vehicle can adapt to components of different lengths. Each fixing assembly 200 includes two fixing frames 210 spaced apart along the second direction Y, and the component is located between the two fixing frames 210 of each fixing assembly 200, and the fixing frame 210 is used to fix the position of the component along the second direction Y. The spacing between two adjacent fixing frames 210 in each fixing assembly 200 along the second direction Y is adjustable. When the size of the component along the second direction Y is large, the spacing between two adjacent fixing frames 210 along the second direction Y can be increased. When the size of the component along the second direction Y is small, the spacing between two adjacent fixing frames 210 along the second direction Y can be reduced, so that the fixing frames 210 can adapt to different sizes of components. When the sizes of the components along the second direction Y at different positions along the first direction X are different, the spacing between two adjacent fixing frames 210 along the second direction Y in each fixing assembly 200 can be adjusted independently, so that the transport vehicle can be suitable for components of different shapes, which is conducive to improving the practicality of the transport vehicle.

[0024] Optionally, the first direction X and the second direction Y are horizontal directions.

[0025] Optionally, the dimension of the component in the length direction is greater than the dimension of the component in the width direction, and the dimension of the component in the width direction is greater than the dimension of the component in the thickness direction. In the related art, in order to place the component stably on the support portion 100, one side of the component in the thickness direction is placed on the surface of the support portion 100, and the dimension of the component in the second direction Y is the dimension in the width direction. In the present application, the fixing frame 210 is provided to respectively connect the two sides of the component in the thickness direction to between the two fixing frames 210, and the dimension of the component in the second direction Y is the dimension in the thickness direction, which can reduce the dimension of the support portion 100 occupied by the component in the second direction Y, and the component can be transported vertically, reducing the space occupied by the component and improving the transportation efficiency.

[0026] Optionally, the supporting parts 100 of two adjacent transport units 10 are movably connected, which is beneficial for each transport unit 10 to pass smoothly when the road surface is uneven and there are special road conditions.

[0027] Optionally, the support parts 100 of two adjacent transport units 10 are connected by a hinge.

[0028] like Figure 3 and Figure 4 As shown, in some optional embodiments, the support portion 100 is provided with a plurality of mounting portions 110, and the plurality of mounting portions 110 are spaced apart along the second direction Y, and at least one fixing frame 210 in each fixing assembly 200 is detachably connected to at least one of the plurality of mounting portions 110, so that the distance between two adjacent fixing frames 210 in each fixing assembly 200 can be adjusted.

[0029] In these optional embodiments, at least one fixing frame 210 in each fixing assembly 200 is detachably connected to at least one of the plurality of mounting portions 110, so that the position of at least one fixing frame 210 along the second direction Y can be adjusted, and the spacing between two adjacent fixing frames 210 in each fixing assembly 200 can be adjusted.

[0030] Optional, such as Figure 4 As shown, each mounting portion 110 includes one screw hole or multiple screw holes, and the fixing frame 210 is installed in at least one of the multiple screw holes by bolts. By adjusting the fixing frame 210 to be installed in different screw holes, the position of the fixing frame 210 along the second direction Y can be adjusted, and the distance between two adjacent fixing frames 210 in each fixing assembly 200 can be adjusted.

[0031] Optional, such as Figure 5 As shown, each mounting portion 110 includes a slide groove extending along the second direction Y, and the fixing frame 210 is installed in the slide groove through a slider. By adjusting the position of the slider in the slide groove, the position of the fixing frame 210 along the second direction Y can be adjusted, and the distance between two adjacent fixing frames 210 in each fixing assembly 200 can be adjusted.

[0032] like Figure 2 and Figure 3 As shown, in some optional embodiments, at least two groups of fixing components 200 are disposed on the support portion 100, and the at least two groups of fixing components 200 are spaced apart along the second direction Y.

[0033] In these optional embodiments, the support portion 100 of each transport unit 10 is provided with at least two groups of fixing components 200, and the at least two groups of fixing components 200 are arranged at intervals along the second direction Y, so that the transport vehicle can transport two groups of components at the same time, and the two groups of components are respectively fixed in the two groups of fixing components 200 of each transport unit 10, so as to improve the transport efficiency of the transport vehicle. Since the two fixing frames 210 can fix both sides of the component in the thickness direction, the component can be transported vertically, reducing the occupied space of the component, and the two groups of components can be transported side by side at the same time within the limited width of the support portion 100 along the second direction Y, thereby improving the transportation efficiency.

[0034] like Figure 1 and Figure 2 As shown, in some optional embodiments, two groups of fixing components 200 are disposed on the supporting portion 100 of a portion of the transport units 10, and at least two groups of fixing components 200 are spaced apart along the second direction Y. Multiple groups of fixing components 200 are disposed on the supporting portion 100 of another portion of the transport units 10, and the multiple groups of fixing components 200 include multiple rows spaced apart along the first direction X, and each row includes two groups of fixing components 200 spaced apart along the second direction Y.

[0035] In these optional embodiments, some transport units 10 are provided with two sets of fixing components 200, and other transport units 10 are provided with multiple sets of fixing components 200. The components of the blades have different structures in the first direction X, so that the weight distribution of the components in the first direction X is different. The transport unit 10 carrying a larger mass of components can be provided with multiple sets of fixing components 200 to improve the fixing effect of the transport unit 10 on the components. The transport unit 10 carrying a smaller mass of components can be provided with two sets of fixing components 200 to reduce the use of the fixing frame 210.

[0036] like Figures 1 to 3 As shown, in some optional embodiments, each transport unit 10 also includes an operating platform 300, which is fixedly connected between two adjacent groups of fixing components 200 along the second direction Y. The operating platform 300 of at least one transport unit 10 is spaced apart from the support part 100 along the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect each other.

[0037] In these optional embodiments, the operating platform 300 is disposed between two adjacent fixing assemblies 200 along the second direction Y, so that personnel can observe and operate the components on both sides of the operating platform 300 in the second direction Y on the operating platform 300. In addition, the operating platform 300 is disposed between two fixing assemblies 200, and the two fixing assemblies 200 can fix the position of the operating platform 300 along the second direction Y. The operating platform 300 of at least one transport unit 10 is spaced apart from the support portion 100 along the third direction Z, and the support portion 100 is used to support the components. The operating platform 300 is spaced apart from the support portion 100 along the third direction Z, so that personnel can observe and operate the components at a certain height.

[0038] Optionally, the first direction X, the second direction Y and the third direction Z are perpendicular to each other, the first direction X and the second direction Y are horizontal directions, and the third direction Z is a vertical direction.

[0039] Optional, such as Figure 2 and Figure 3As shown, the fixing frame 210 of each fixing assembly 200 extends along the third direction Z, the fixing frame 210 of one of the two groups of fixing assemblies 200 arranged at intervals along the second direction Y includes a first fixing frame 211 and a second fixing frame 212, and the fixing frame 210 of the other group includes a third fixing frame 213 and a fourth fixing frame 214. The first fixing frame 211, the second fixing frame 212, the third fixing frame 213 and the fourth fixing frame 214 are arranged in sequence along the second direction Y, the second fixing frame 212 and the third fixing frame 213 are located between the first fixing frame 211 and the fourth fixing frame 214, and the operating platform 300 is fixedly connected between the second fixing frame 212 and the third fixing frame 213, and the second fixing frame 212 and the third fixing frame 213 are used to fix the position of the operating platform 300 along the second direction Y and the third direction Z.

[0040] like Figures 1 to 3 As shown, in some optional embodiments, the operating platform 300 extends along the first direction X, and the operating platforms 300 of two adjacent transport units 10 are detachably connected.

[0041] In these optional embodiments, the operating platform 300 extends along the first direction X, so that personnel can observe and operate different positions of each component along the first direction X on the operating platform 300. The operating platforms 300 of two adjacent transport units 10 are detachably connected, so that the two adjacent transport units 10 are detachably connected, so as to adjust the number of transport units 10, and the interconnection of the operating platforms 300 enables personnel to move between the transport units 10.

[0042] like Figure 6 As shown, in some optional embodiments, the transport unit 10 includes a plurality of interconnected first transport units 11 and a plurality of second transport units 12 located on at least one side of the plurality of first transport units 11 along the first direction X, the distance between the operating platform 300 of the first transport unit 11 and the support part 100 is equal, and the distance between the operating platform 300 of the plurality of second transport units 12 and the support part 100 gradually decreases along the direction away from the first transport unit 11.

[0043] Optionally, the plurality of second transport units 12 are connected to one side of the plurality of first transport units 11 along the first direction X, or the plurality of second transport units 12 are connected to both sides of the plurality of first transport units 11 along the first direction X.

[0044] In these optional embodiments, the distance between the operating platform 300 of the first transport unit 11 and the support part 100 is equal, that is, the operating platform 300 of the first transport unit 11 is located at the same height, so that the operating platforms 300 of two adjacent first transport units 11 can be connected to each other, and the distance between the operating platforms 300 of the plurality of second transport units 12 and the support part 100 gradually decreases in the direction away from the first transport unit 11, that is, the distance between the operating platforms 300 of the plurality of second transport units 12 and the support part 100 gradually decreases in the direction close to the end of the transport vehicle, so that personnel can board the operating platform 300 from the end of the transport vehicle along the first direction X.

[0045] Optional, such as Figure 6 As shown, at least a portion of the operating platform 300 on the second transport unit 12 located at an edge of the transport vehicle along the first direction X is in contact with the support portion 100 .

[0046] like Figures 1 to 3 As shown, in some optional embodiments, the transport unit 10 also includes a moving wheel 400, which is rotatably connected to the side of the support part 100 away from the fixed component 200 through a rotating shaft 410, and the axial direction of the rotating shaft 410 is parallel to the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect each other.

[0047] In these optional embodiments, the moving wheel 400 is used to drive the transport unit 10 to move forward. The moving wheel 400 is rotatably connected to the side of the support part 100 away from the fixed component 200 through the rotating shaft 410. The moving wheel 400 can rotate around the rotating shaft 410, so that the transport vehicle can turn, thereby improving the adaptability of the transport vehicle to different venues.

[0048] Since the length of the components of the blade along the first direction X is long, the transport vehicle includes a plurality of connected transport units 10, and the moving wheels 400 of each transport unit 10 can rotate around the rotating shaft 410 to reduce the turning radius of the transport vehicle.

[0049] like Figure 1 and Figure 2 As shown, in some optional embodiments, the moving wheels 400 of one of two adjacent transport units 10 are hydraulically driven wheels 401 , and the moving wheels 400 of the other one are motor-driven wheels 402 .

[0050] In these optional embodiments, the hydraulic drive wheel 401 can generate a very large torque at a low speed, which is more advantageous for a transport vehicle that needs to start with a heavy load or continuously output a high torque. The motor drive wheel 402 has a high energy efficiency, especially under light load conditions, which can save energy. And the motor drive wheel 402 has a fast response speed. The moving wheel 400 of one of the two adjacent transport units 10 is a hydraulic drive wheel 401, and the moving wheel 400 of the other is a motor drive wheel 402, so that the distribution of the hydraulic drive wheel 401 and the motor drive wheel 402 of the transport vehicle is more uniform, improving the balance of the driving force distribution.

[0051] like Figure 3 As shown, in some optional embodiments, the transport vehicle also includes a controller and a line marking recognition module 510, the controller is communicatively connected with the moving wheel 400 and the line marking recognition module 510, the line marking recognition module 510 is used to obtain ground line marking information and send the line marking information to the controller, and the controller is used to control the rotation angle of the moving wheel 400 according to the line marking information.

[0052] In these optional embodiments, the controller is communicatively connected with the moving wheel 400 and the marking recognition module 510, so that the controller can control the rotation angle of the moving wheel 400 according to the marking information, so that the transport vehicle turns according to the marking and moves to the designated position, thereby realizing automatic transportation of the assembly parts of the blade by the transport vehicle, improving the transportation efficiency and reducing the labor cost.

[0053] Optional, such as Figure 3 As shown, the marking recognition module 510 is disposed on the side of the support portion 100 away from the fixing assembly 200, and the marking recognition module 510 is disposed on the side of the support portion 100 facing the ground to reduce the interference of the support portion 100 on the marking recognition module 510 in identifying ground marking information.

[0054] Optional, such as Figure 3 As shown, the transport unit 10 includes at least two moving wheels 400 , and the at least two moving wheels 400 are arranged along the second direction Y at intervals.

[0055] Optionally, the transport unit 10 includes four moving wheels 400 , and the moving wheels 400 are arranged at intervals along the first direction X and / or the second direction Y.

[0056] Optionally, the controller is respectively connected to the plurality of moving wheels 400 by telecommunication, and the controller controls each moving wheel 400 respectively, so that the rotation angle of each moving wheel 400 can be independently controlled, which can reduce the rotation radius of the transport vehicle and improve the flexibility of the transport vehicle.

[0057] like Figure 3As shown, in some optional embodiments, the transport unit 10 also includes a distance detection module 520, which is used to detect the distance between the surrounding objects and the transport unit 10, and send the distance information to the controller. The controller is configured to compare the distance with a preset value. When the distance is less than the preset value, the controller controls the moving wheel 400 to stop running.

[0058] In these optional embodiments, the distance detection module 520 is used to detect the distance between the surrounding objects and the transport unit 10. When the distance is less than a preset value, the transport unit 10 may collide with the surrounding objects. The controller compares the distance with the preset value. When the distance is less than the preset value, the controller controls the moving wheel 400 to stop running, thereby reducing the risk of the transport unit 10 colliding with the surrounding objects.

[0059] Optional, such as Figure 3 As shown, the distance detection module 520 is disposed on the edge of the support portion 100 perpendicular to the third direction Z, so as to facilitate distance measurement of surrounding objects.

[0060] Optionally, the transport vehicle further includes a battery device, and the battery device is used to supply power to the moving wheels 400 .

[0061] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A transport vehicle for transporting components of wind turbine blades, characterized in that: The transport vehicle comprises at least two transport units arranged side by side along a first direction, and the transport units comprise: A support part, wherein the support parts of two adjacent transport units are detachably connected; A fixing assembly is arranged on the supporting portion, and the fixing assemblies of two adjacent transport units are arranged side by side along the first direction; Each of the fixing components comprises two fixing frames spaced apart along a second direction, and a distance between two adjacent fixing frames in each of the fixing components along the second direction is adjustable, and the first direction and the second direction intersect.

2. The transport vehicle according to claim 1, characterized in that: The support portion is provided with a plurality of mounting portions, and the plurality of mounting portions are spaced apart along the second direction. At least one fixing frame in each of the fixing assemblies is detachably connected to at least one of the plurality of mounting portions, so that the distance between two adjacent fixing frames in each of the fixing assemblies can be adjusted.

3. The transport vehicle according to claim 1, characterized in that: At least two groups of the fixing components are arranged on the supporting portion, and the at least two groups of the fixing components are arranged at intervals along the second direction.

4. The transport vehicle according to claim 3, characterized in that: Each of the transport units also includes an operating platform, which is fixedly connected between two adjacent groups of fixed components along the second direction. The operating platform of at least one of the transport units is spaced apart from the support portion along a third direction, and the first direction, the second direction and the third direction intersect each other.

5. The transport vehicle according to claim 4, characterized in that: The operating platform extends along the first direction, and the operating platforms of two adjacent transport units are detachably connected.

6. The transport vehicle according to claim 5, characterized in that: The transport unit includes a plurality of interconnected first transport units and a plurality of second transport units located on at least one side of the plurality of first transport units along the first direction, wherein the distances between the operating platforms of the first transport units and the supporting parts are equal; and along the direction away from the first transport unit, the distances between the operating platforms of the plurality of second transport units and the supporting parts gradually decrease.

7. The transport vehicle according to any one of claims 1 to 6, characterized in that: The transport unit further comprises a moving wheel, which is rotatably connected to a side of the support portion away from the fixed component via a rotating shaft, wherein the axial direction of the rotating shaft is parallel to a third direction, and the first direction, the second direction and the third direction intersect each other.

8. The transport vehicle according to claim 7, characterized in that: The moving wheels of one of the two adjacent transport units are hydraulically driven wheels, and the moving wheels of the other one are motor-driven wheels.

9. The transport vehicle according to claim 7, characterized in that: The transport vehicle also includes a controller and a marking recognition module. The controller is communicatively connected with the moving wheel and the marking recognition module. The marking recognition module is used to obtain ground marking information and send the marking information to the controller. The controller is used to control the rotation angle of the moving wheel according to the marking information.

10. The transport vehicle according to claim 9, characterized in that: The transport unit also includes a distance detection module, which is used to detect the distance between surrounding objects and the transport unit and send the distance information to the controller. The controller is configured to compare the distance with a preset value. When the distance is less than the preset value, the controller controls the moving wheel to stop running.

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