Drawing bearing beam and fan blade transport vehicle

Abstract

The utility model belongs to the technical field of fan blade transportation, and particularly relates to a drawing bearing beam and a fan blade transport vehicle, which comprise at least two connecting beams which are connected with each other, and each connecting beam is provided with an arc-shaped structure with a preset curvature along the length direction of the connecting beam. The tail part of the previous section of connecting beam is assembled on the head part of the next section of connecting beam in a sleeving manner, and from the second section of connecting beam, the lower surface of the head part of each section of connecting beam is provided with a slope structure matched with the lower surface of the tail part of the previous section of connecting beam adjacent to the second section of connecting beam. The connecting beam can naturally counteract sinking caused by self weight and gaps and always keep a linear state, the problem that the lower plane of the connecting beam is in contact with the ground is solved, the running safety and stability of a transport vehicle are improved, and the transport requirements of long-distance and heavy-load blades are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wind power blade transportation, and particularly relates to a pull-out load-bearing beam and a fan blade transport vehicle. BACKGROUND

[0002] Fan blades are core components of wind power generators that convert wind energy in nature into electric energy of wind power generators, and are main bases for measuring design and technical level of wind power generators. With rapid development of wind power technology and wide construction of wind power fields, the length and weight of fan blades are increasing, which puts forward higher requirements for transport vehicles. The current fan blade transport vehicle usually adopts a three-section pull-out connecting beam structure, which performs well when transporting fan blades with short total length and light weight, but with the increase of the size of fan blades, the three-section beam structure cannot meet the transport requirements of long-distance and heavy-load blades.

[0003] In the prior art, there is research on the problem that the three-section beam structure cannot meet the transport requirements of long-distance and heavy-load goods, such as patent application CN215590841U - a pull-out connecting beam and a module transport vehicle, which realizes length-adjustable hard splicing between modules through the pull-out outer beam and the pull-out inner beam arranged in a sliding manner and detachably fixed and connected, increases bending stiffness and load-bearing capacity, and solves the problem that the three-section beam structure cannot meet the transport requirements of long-distance and heavy-load goods, but the existing pull-out connecting beam focuses more on flexibility and adaptability of the module transport vehicle, and it is difficult to properly handle the sagging of the connecting beam due to its self-weight and gap during the pulling process, so it is difficult to effectively avoid the problem of the lower plane of the connecting beam dragging the ground, thereby affecting the safety of the transport vehicle in driving. Therefore, a new technical scheme is needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a pull-out load-bearing beam and a fan blade transport vehicle to solve the problem that the current pull-out connecting beam cannot properly handle the sagging of the connecting beam due to its self-weight and gap during the pulling process, so that the connecting beam cannot effectively avoid the problem of its lower plane dragging the ground, thereby affecting the safety of the transport vehicle in driving and other problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pull-out load-bearing beam, comprising at least two sections of interconnected connecting beams, each section of the connecting beams being provided with an arc structure of predetermined curvature along its length direction, the tail portion of the connecting beam of the previous section being assembled to the head portion of the connecting beam of the next section in a sleeve manner, and starting from the second section of the connecting beam, the lower surface of the head portion of each section of the connecting beam is provided with a slope structure that matches the lower surface of the tail portion of the connecting beam of the previous section adjacent thereto, the slopes of each of the connecting beams with the slope structure have the same slope and length, and the height dimension of the socket end hole position of the connecting beam with the slope structure is greater than the corresponding height dimension of the socket part inside the connecting beam.

[0006] Furthermore, when the overall structure is fully expanded or retracted to a normal use state, the lower end of the head of the connecting beam at the front end of the overall structure and the lower end of the tail of the connecting beam at the rear end of the overall structure are on the same horizontal plane.

[0007] Furthermore, a gap is provided at the upper part of the joint between the tail of the adjacent upper section connecting beam and the head of the next section connecting beam; a pad is clamped in the gap; the tail of the adjacent upper section connecting beam is clamped in the gap at the joint of the next section connecting beam through the pad to form a gap buffer arrangement with the socket end hole position of the next section connecting beam; the lower end of the tail of the connecting beam of the upper section is tightly contacted with the end of the slope structure of the head of the adjacent next section connecting beam through the clamping of the pad.

[0008] In addition to the above technical solutions, there is also a wind turbine blade transport vehicle with the drawer load-bearing beam for transporting wind turbine blades.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1.The utility model discloses adopt the design of the combination of sleeve connection mode, arc structure and slope structure, which can naturally offset the concave caused by self weight and gap after the pulling of the pulling load-bearing beam, thereby avoiding the problem of mopping the floor of the lower plane of the connecting beam, improving the safety and stability of the transport vehicle, and helping to disperse the pressure and reduce stress concentration when bearing load, so that the pulling load-bearing beam can always maintain a straight line state during the pulling process, enhancing the structural strength and stability of the whole pulling load-bearing beam, and being suitable for the transport scene of heavy goods such as large fan blades, the tail of the last connecting beam is assembled in the head of the next connecting beam in a sleeve connection mode, which not only facilitates assembly and disassembly, but also reduces friction and wear at the connection, so that the pulling load-bearing beam can adapt to the transport demand of fan blades of different lengths, and the lower surface of the head of each connecting beam is provided with a slope structure matching the lower surface of the tail of the previous connecting beam, which can automatically adjust the levelness of the pulling load-bearing beam during the pulling process, reduce the additional wear and damage caused by concave, and ensure the overall stability and service life of the pulling load-bearing beam.

[0011] 2.The utility model discloses the design of the lower end of the head of the first connecting beam and the lower end of the tail of the last connecting beam on the same horizontal plane, which makes the overall stress distribution of the pulling load-bearing beam more uniform, helps to reduce structural damage caused by stress concentration, ensures the close fit between the connecting beams and the stability of the overall structure, even in the case of complex road conditions or emergencies during transportation, and also ensures the levelness of the whole pulling load-bearing beam after unfolding or retracting, so that the problem of bumping or shaking caused by uneven connecting beams during transportation is avoided, ensuring the integrity and safety of the fan blade transportation.

[0012] 3.The utility model discloses the design of the sleeve connection end hole position of the connecting beam with slope structure, which has a height larger than the corresponding height of the internal sleeve connection part of the connecting beam, so that the sleeve connection end of the connecting beam has enough deformation space when bearing load, improving the flexibility and durability of the sleeve connection end, and ensuring the close fit between the connecting beams.

[0013] 4.The utility model discloses a gap in the joint between the adjacent connecting beams is clamped with a pad, which can absorb and disperse the impact and vibration from the road or goods during transportation, reduce the friction and wear between the connecting beams, prolong the service life, protect the goods from damage, prevent the connection from loosening or misalignment due to the small gap in the joint, ensure the structural integrity of the entire pull-out load-bearing beam, improve the tightness and stability between the connecting beams, and help maintain the levelness of the entire pull-out load-bearing beam, so that the pull-out load-bearing beam can always remain straight after pulling and loading, solve the concave phenomenon caused by the gap, and ensure the stability and safety of transportation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the embodiment 1 of the utility model (taking five sections as an example).

[0015] Figure 2 It is a structural schematic view of the first section connecting beam. Figure 1

[0016] Figure 3 It is a structural schematic view of the second section connecting beam. Figure 1

[0017] Figure 4 It is a structural schematic view of the third section connecting beam. Figure 1

[0018] Figure 5 It is a structural schematic view of the fourth section connecting beam. Figure 1

[0019] Figure 6 It is a structural schematic view of the fifth section connecting beam. Figure 1

[0020] Figure 7 It is a connecting structure schematic view of the joint between the adjacent two section connecting beams of the utility model.

[0021] Wherein: 101, the first section connecting beam; 102, the second section connecting beam; 103, the third section connecting beam; 104, the fourth section connecting beam; 105, the fifth section connecting beam; 201, the first slope structure; 202, the second slope structure; 203, the third slope structure; 204, the fourth slope structure; 3, the gap; 4, the pad. DETAILED DESCRIPTION

[0022] The following embodiments are used to further illustrate the content of the utility model and do not limit the application of the utility model. Embodiment 1:

[0023] Please refer to Figures 1-7 ​​​​​The embodiment provides a pulling load-bearing beam, which comprises five connected connecting beams, i.e. the tail of the first connecting beam 101 is assembled with the head of the second connecting beam 102 in a sleeve joint mode, the tail of the second connecting beam 102 is assembled with the head of the third connecting beam 103 in a sleeve joint mode, the tail of the third connecting beam 103 is assembled with the head of the fourth connecting beam 104 in a sleeve joint mode, the tail of the fourth connecting beam 104 is assembled with the head of the fifth connecting beam 105 in a sleeve joint mode, when the whole structure is completely unfolded or retracted to a normal use state, the tail lower end of the fifth connecting beam 105 is at the same horizontal plane with the head lower end of the first connecting beam 101, and the first connecting beam 101, the second connecting beam 102, the third connecting beam 103, the fourth connecting beam 104 and the fifth connecting beam 105 are all provided with arc-shaped structures with a predetermined curvature along the length direction of the connecting beams (the curvature of the arc-shaped structure is determined by the strength of the material, when the length of the connecting beam reaches 3000mm, the height from the uppermost end to the lowermost end of the connecting beam, i.e. the upper arch, is 10mm);

[0024] The head lower surface of each connecting beam is provided with a slope structure matched with the tail lower surface of the adjacent connecting beam, i.e. the head lower surface of the second connecting beam 102 is provided with the first slope structure 201 matched with the tail lower surface of the first connecting beam 101 and used for enhancing the tightness and stability of the connecting position, the head lower surface of the third connecting beam 103 is provided with the second slope structure 202 matched with the tail lower surface of the second connecting beam 102 and used for enhancing the tightness and stability of the connecting position, the head lower surface of the fourth connecting beam 104 is provided with the third slope structure 203 matched with the tail lower surface of the third connecting beam 103 and used for enhancing the tightness and stability of the connecting position, the head lower surface of the fifth connecting beam 105 is provided with the fourth slope structure 204 matched with the tail lower surface of the fourth connecting beam 104 and used for enhancing the tightness and stability of the connecting position, the inclination and length of the first slope structure 201, the second slope structure 202, the third slope structure 203 and the fourth slope structure 204 are the same (the inclination can be set as 1.5 degrees, and the length can be set as 2 meters), and the height dimension of the sleeve joint orifice position of the second connecting beam 102, the third connecting beam 103, the fourth connecting beam 104 and the fifth connecting beam 105 is greater than the corresponding height dimension of the internal sleeve joint part;

[0025] The upper part of the joint between the tail of the first connecting beam 101 and the head of the second connecting beam 102, the tail of the second connecting beam 102 and the head of the third connecting beam 103, the tail of the third connecting beam 103 and the head of the fourth connecting beam 104, and the tail of the fourth connecting beam 104 and the head of the fifth connecting beam 105 is provided with a gap 3 for mounting a pad 4, and the gap 3 is provided with a pad 4 for filling the gap 3 and enhancing the tightness and stability between the connecting beams;

[0026] The tail of the first connecting beam 101 is clamped in the gap 3 at the joint of the second connecting beam 102 by the pad 4, and the gap buffer is formed at the position of the socket end orifice of the second connecting beam 102. The tail of the second connecting beam 102 is clamped in the gap 3 at the joint of the third connecting beam 103 by the pad 4, and the gap buffer is formed at the position of the socket end orifice of the third connecting beam 103. The tail of the third connecting beam 103 is clamped in the gap 3 at the joint of the fourth connecting beam 104 by the pad 4, and the gap buffer is formed at the position of the socket end orifice of the fourth connecting beam 104. The tail of the fourth connecting beam 104 is clamped in the gap 3 at the joint of the fifth connecting beam 105 by the pad 4, and the gap buffer is formed at the position of the socket end orifice of the fifth connecting beam 105.

[0027] The lower end of the tail of the first connecting beam 101 is tightly contacted with the end of the first slope structure 201 by clamping the pad 4. The lower end of the tail of the second connecting beam 102 is tightly contacted with the end of the second slope structure 202 by clamping the pad 4. The lower end of the tail of the third connecting beam 103 is tightly contacted with the end of the third slope structure 203 by clamping the pad 4. The lower end of the tail of the fourth connecting beam 104 is tightly contacted with the end of the fourth slope structure 204 by clamping the pad 4.

[0028] The working principle and use process of the embodiment are as follows: Figures 1-7 After the assembly of the pullable load-bearing beam is completed, the operator installs the pullable load-bearing beam on a fan blade transport vehicle (the functions and structures of conventional equipment such as fan blade transport vehicles are well known in the art, and the connection setting is also well known, so no further explanation is given here, and the fan blade transport vehicle is not shown in the drawings). The purpose is to naturally offset the sagging caused by the self-weight and the gap after pulling, thereby avoiding the problem of dragging the ground on the lower plane of the connecting beam, improving the safety and stability of the transport vehicle in driving, and also helping to disperse the pressure when bearing the load, reduce stress concentration, and enable the pullable load-bearing beam to always maintain a straight state during pulling, thereby enhancing the structural strength and stability of the entire pullable load-bearing beam, and meeting the transportation needs of long-distance and heavy-load blades.

[0029] When it is necessary to increase the length of the transport vehicle to accommodate longer fan blades, the operator begins to pull the pullable load-bearing beam, first fixes the front end of the first connecting beam 101 to the traction mechanism of the transport vehicle and ensures the firmness of the fixation, then successively pulls the second connecting beam 102, the third connecting beam 103, the fourth connecting beam 104 and the fifth connecting beam 105, so that the head of each connecting beam is sleeved with the tail of the adjacent previous connecting beam, and during the pulling process, since each connecting beam is provided with the arc-shaped structure and the slope structure with a predetermined curvature, the pulled pullable load-bearing beam can naturally offset the sagging caused by its own weight and the gap, so that the entire pullable load-bearing beam can always maintain a straight line state, in order to ensure the tightness and stability between the connecting beams, the gasket 4 is clamped in the gap 3 between the joints of the adjacent two connecting beams, so that the entire pullable load-bearing beam can absorb and disperse the impact and vibration from the road surface or the goods during the transportation process, and also effectively prevent the loosening or misalignment caused by the small gap at the joint, and ensure the integrity of the entire pullable load-bearing beam structure.

[0030] When the fan blade transportation is completed, the operator needs to first remove the gasket 4 from the gap 3 between the joints of the adjacent two connecting beams, and then successively retract the fifth connecting beam 105, the fourth connecting beam 104, the third connecting beam 103 and the second connecting beam 102 towards the first connecting beam 101, until all the connecting beams are tightly connected together, and during the retraction process, due to the presence of the fourth slope structure 204, the third slope structure 203, the second slope structure 202 and the first slope structure 201, the entire pullable load-bearing beam can be smoothly retracted to the original state without the phenomenon of jamming or misalignment.

[0031] By using the above-mentioned sleeving mode, arc-shaped structure, slope structure and gasket combined pullable load-bearing beam structure, the natural straight line state of the entire pullable load-bearing beam during the pulling and retracting process is realized, the problem of the pullable load-bearing beam dragging the ground is avoided, and the safety and stability of the transport vehicle during driving are ensured. Embodiment 2

[0032] Please refer to Figures 1-7 Figures 1-7 As another object of the present application, a fan blade transport vehicle is provided, which is provided with the above-mentioned pullable load-bearing beam for transporting fan blades, so that the fan blade transport vehicle can obtain any beneficial effect of the above-mentioned pullable load-bearing beam, which will not be described here again.

Claims

1. A tension load-bearing beam comprising at least two interconnected connecting beams, characterized in that: Each section of the connecting beam is provided with an arc structure with a predetermined curvature along its length direction. The tail of the connecting beam of the previous section is assembled on the head of the connecting beam of the next section in a sleeve-type manner. Starting from the second section of the connecting beam, the lower surface of the head of each section of the connecting beam is provided with a slope structure that matches the lower surface of the tail of the connecting beam of the previous section.

2. A pull-out load-bearing beam according to claim 1, characterized in that: When the overall structure is fully expanded or retracted to a normal use state, the lower end of the head of the connecting beam at the front end of the overall structure and the lower end of the tail of the connecting beam at the rear end of the overall structure are on the same horizontal plane.

3. The pull-out load-bearing beam according to claim 1, characterized in that: The height dimension of the hole position of the sleeve end of the connecting beam provided with the slope structure is greater than the corresponding height dimension of the sleeve part inside the connecting beam.

4. The pull-out load-bearing beam according to claim 3, characterized in that: The slopes of the connecting beams provided with the slope structure have the same slope and length.

5. The pull-out load-bearing beam according to claim 1, characterized in that: A gap is provided at the upper portion of the joint between the tail portion of the adjacent upper section connecting beam and the head portion of the next section connecting beam.

6. The pull-out load-bearing beam according to claim 5, characterized in that: A backing plate is provided in the gap.

7. The pull-out load-bearing beam according to claim 6, characterized in that: The tail of the adjacent upper section connecting beam is clamped in the gap at the joint of the next section connecting beam through a pad to form a gap buffer arrangement with the hole position of the sleeve end of the next section connecting beam.

8. The pull-out load-bearing beam according to claim 7, characterized in that: The lower end of the tail of the connecting beam described in the previous section is tightly abutted against the end of the slope structure of the head of the adjacent next section of the connecting beam by means of the snap-in of the pad.

9. A wind turbine blade transport vehicle, characterized in that: It comprises a drawer load-bearing beam as described in any one of claims 1 to 8, which is used for transporting wind turbine blades.

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