Wind turbine jib and crane

Abstract

The present invention discloses a wind power hoisting arm head and a crane, wherein the wind power hoisting arm head comprises: a wind power hoisting rod head (100) having a rod end (A); a top arm (200) having an arm end (B), wherein the arm end (B) comprises a pivot connection end (210) pivotally connected to the rod end (A) and a free part (220); and an arm head angle adjustment frame (300), comprising a connecting plate (310) and a connecting frame (320) pivotally mounted on the connecting plate (310) in an adjustable position. The connecting plate, the connecting frame and the free part form a triangular structure, and the plate abutting end of the connecting plate does not need to be fixedly connected, but relies on the wind power hoisting rod head's own gravity to press against the plate abutting end, which is convenient for disassembly and assembly. The adjustability of the pivot position between the connecting plate and the connecting frame can change the position of the plate abutment end, realize the adjustability of the abutment angle of the wind turbine hoisting rod head, and efficiently and conveniently change the loading force of the wind turbine hoisting rod head and the distance of the hoisted object from touching the rod.

Description

Technical Field

[0001] The present invention belongs to the technical field of cranes, and in particular, relates to a wind power hoisting arm head and a crane. Background Art

[0002] Cranes are important mechanical structures in the field of wind power hoisting. During the wind power hoisting process, the wind power hoisting boom head directly affects the wind power hoisting capacity and hoisting efficiency. Among them, the wind power hoisting pole head is an important operating component of the crane. Since different installation angles of the wind power hoisting pole head correspond to different lifting performances, the crane can choose the installation angle of the wind power pole head when performing wind power hoisting operations. Sometimes, in order to improve the lifting capacity, the boom length can also be changed, but this is bound to affect the efficiency of the wind power hoisting operation. Therefore, how to efficiently and conveniently change the hoisting force of the wind power hoisting pole head and the distance of the hoisted object from touching the pole is a problem worth studying. Summary of the invention

[0003] In view of the above-mentioned defects or shortcomings of the prior art, the present invention provides a wind turbine hoisting arm head and a crane. The wind turbine hoisting arm head relies on its own gravity to press against the boom head, which is convenient for disassembly and replacement of the arm head angle adjustment frame, and efficiently and conveniently changes the hoisting force of the wind turbine hoisting pole head and the distance of the hoisted object from touching the pole.

[0004] To achieve the above object, on the one hand, according to the wind turbine hoisting arm head of the present invention, the wind turbine hoisting arm head comprises:

[0005] A wind power hoisting pole head having a pole end;

[0006] a top arm having an arm end, the arm end including a pivotally connected end pivotally connected to the rod end and a free portion; and

[0007] The arm head angle adjustment frame comprises a connecting plate and a connecting frame pivotally mounted on the connecting plate in an adjustable position, wherein an end of the connecting frame is pivotally connected to the free portion;

[0008] One of the two ends of the connecting plate is in contact with one of the free portion and the rod end, and the other of the two ends of the connecting plate is in contact with or hinged with the other of the free portion and the rod end.

[0009] In some embodiments, the connecting plate is provided with a plurality of pin holes spaced apart along the length direction of the plate, and a connecting frame pin rod is provided on the connecting frame, and the connecting frame pin rod passes through one of the plurality of pin holes.

[0010] In some embodiments, the connecting plate includes a top section arm end portion arranged toward the free portion, a connecting plate pin hole being formed on the top section arm end portion, an arm pin shaft passing through the connecting plate pin hole, a top section arm ear plate extending toward the rod end is provided on the free portion, an ear plate opening groove is formed on the top section arm ear plate, the arm pin shaft can be inserted into the ear plate opening groove, so that the connecting plate can abut against the free portion.

[0011] In some embodiments, a frame connecting end pivotally connected to the connecting frame is formed on the arm end, and in the arm height direction of the arm end, the frame connecting end is clamped between the pivot connecting end and the free portion.

[0012] In some embodiments, the connecting plate also includes a rod head end portion arranged toward the rod end portion, the rod head end portion is provided with an open groove extending radially therethrough, a rod head ear plate extending toward the free portion is installed on the rod end portion, a rod head pin shaft is vertically connected to the plate surface of the rod head ear plate, and the rod head pin shaft can be inserted into the open groove so that the rod end portion can abut against the connecting plate.

[0013] In some embodiments, there are two connecting plates which are arranged in parallel and spaced apart from each other, and the connecting frame is sandwiched between the two connecting plates.

[0014] In some embodiments, the wind turbine hoisting arm head also includes an anti-tilt component, one end of the anti-tilt component is pivotally connected to the rod end, and the other end is pivotally connected to the arm end, so as to limit the maximum angle between the rod end and the arm end toward the side of the connecting plate.

[0015] In some embodiments, the anti-roll component includes an anti-roll bar end link and an anti-roll arm end link pivotally connected, the anti-roll bar end link is pivotally connected to the bar end, and the anti-roll arm end link is pivotally connected to the arm end.

[0016] In some embodiments, the anti-roll arm end link is formed with an anti-roll connection end pivotally connected to the arm end, and in the arm height direction of the arm end, the anti-roll connection end is clamped between the pivot connection end and the frame connection end.

[0017] On the other hand, the present invention further provides a crane, comprising the above-mentioned wind power hoisting arm head.

[0018] In the wind turbine hoisting arm head and crane of the present invention, the wind turbine hoisting arm head adopts a combination of a wind turbine hoisting rod head, a top section arm and an arm head angle adjustment frame, and forms a triangular structure through a connecting plate, a connecting frame and a free portion. The connecting plate extends from the triangular structure and forms a plate abutment end. No fixed connection is required, and the wind turbine hoisting rod head can be pressed against the plate abutment end by its own gravity, which is convenient for disassembly and assembly. The position of the plate abutment end can be changed through the adjustability of the pivot position between the connecting plate and the connecting frame. In this way, the adjustability of the abutment angle of the wind turbine hoisting rod head is realized, and the hoisting force of the wind turbine hoisting rod head and the distance of the hoisted object from touching the rod are efficiently and conveniently changed.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of a wind power hoisting arm head according to a specific embodiment of the present invention;

[0022] Figure 2 for Figure 1 A partial three-dimensional structural diagram showing the arm head angle adjustment frame;

[0023] Figure 3 for Figure 1 A partial structural diagram showing the pin holes of the top boom and boom ear plates;

[0024] Figure 4 for Figure 1 Another partial structural diagram of the top section arm and the ear plate opening slot;

[0025] Figure 5 It is a structural schematic diagram of a wind turbine hoisting arm head according to a specific embodiment of the present invention, showing a wind turbine hoisting pole head and a top section arm.

[0026] Description of reference numerals:

[0027] 100 Wind power hoisting pole head A pole end

[0028] 200 Top arm B Arm end

[0029] 210 pivot connection end 220 free portion

[0030] 300 Boom head angle adjustment bracket

[0031] 310 Connecting plate 320 Connecting frame

[0032] 400 Anti-tilt member

[0033] 410 Anti-roll bar end link 420 Anti-roll arm end link

[0034] 1 Pin hole 2 Top arm ear plate

[0035] 3 Ear plate opening slot 4 Connecting plate pin hole

[0036] 5 Arm pin 6 Frame connection end

[0037] 7 Club head ear plate 8 Club head pin

[0038] 9 Opening slot 10 Anti-tilt connection end

[0039] L Board length direction DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0043] The present invention provides a wind power hoisting boom head and a crane. The crane is an important mechanical structure in the field of wind power hoisting. Since different installation angles of the wind power hoisting pole head correspond to different lifting performances, the crane can select the installation angle of the wind power pole head when performing wind power hoisting operations. Sometimes, in order to improve the lifting capacity, the boom length can also be changed, but this is bound to affect the efficiency of the wind power hoisting operation. Therefore, how to efficiently and conveniently change the hoisting force of the wind power hoisting pole head and the distance of the hoisted object from the pole is a problem worth studying.

[0044] See also Figures 1 to 5 As shown, the present invention provides a wind power hoisting arm head, which includes: a wind power hoisting rod head 100, a top arm 200 and an arm head angle adjustment frame 300;

[0045] Specifically, the wind turbine hoisting rod head 100 has a rod end A. It can be understood that the wind turbine hoisting rod head 100 has two ends arranged opposite to each other, wherein the rod end A as an inner end can be connected to the top section arm 200, and the wind turbine hoisting rod head 100 serves as a relatively active end of the wind turbine hoisting arm head. In this way, the hoisting operation of the wind turbine hoisting arm head can be completed by adjusting the position of the wind turbine hoisting rod head 100;

[0046] The top arm 200 has an arm end B, and the arm end B includes a pivot connection end 210 of the pivot connection rod end A and a free portion 220. The top arm 200 serves as a relatively fixed end of the wind turbine hoisting arm head. An outer end, namely, the arm end B, is formed on the top arm 200. The arm end B can be connected to the wind turbine hoisting rod head 100, and the wind turbine hoisting rod head 100 can be pivoted with the pivot connection end 210 as the pivot center. As for the pivot connection end 210 and the free portion 220, it can be understood that the arm end B can include two endpoints arranged opposite to each other, one end point can be formed as the pivot connection end 210, and the relative position between the side away from the pivot connection end 210 and the wind turbine hoisting rod head 100 can be adjusted, so as the free portion 220, the free portion 220 is not limited to the end point position; and

[0047] The arm head angle adjustment frame 300 includes a connecting plate 310 and a connecting frame 320 which is pivotally mounted on the connecting plate 310 in an adjustable position, and the end of the connecting frame 320 is pivotally connected to the free portion 220. It can be understood that a T-shaped structure is formed between the connecting plate 310 and the connecting frame 320, so that the arm head angle adjustment frame 300 can form three ends, namely the two ends of the connecting plate 310 and one end of the connecting frame 320, and the arm head angle adjustment frame 300 can be installed on the top section arm 200 through the ends of the connecting frame 320. Among them, the connecting frame 320 is adjustably mounted on the connecting plate 310, which can be understood that a frame pivot connection end is formed between the connecting plate 310 and the connecting frame 320, and the position of the pivot connection end on the connecting plate 310 is adjustable, so that when the two ends of the T-shaped structure are fixed, the position of the remaining end can be adjusted accordingly;

[0048] Among them, one of the two ends of the connecting plate 310 is abutted against one of the free part 220 and the rod end A, and the other of the two ends of the connecting plate 310 is abutted against or hinged against the other of the free part 220 and the rod end A. It can be understood that the connecting plate 310 is clamped between the free part 220 and the rod end A. Taking the connecting plate 310 pivotally connected to the free part 220 as an example, one end of the connecting plate 310 is spaced apart from the end of the connecting frame 320, and a triangular structure can be formed between the connecting plate 310, the connecting frame 320 and the free part 220. The other end of the connecting plate 310 extends from the triangular structure toward the rod end A and forms a movable end of the plate. When abutting against each other, abutment angle α can be formed between the end B of the adjusting arm, the pivot connection end 210 and the rod end A, such as Figure 5As shown. At this time, there is no need for fixed connection. The wind turbine hoisting rod head 100, the arm head angle adjustment frame 300 and the top section arm 200 can be pressed against each other by the wind turbine hoisting rod head 100's own weight, which is convenient for disassembly and replacement of the arm head angle adjustment frame 300. Furthermore, by adjusting the pivot connection position of the connecting frame 320 on the connecting plate 310, the extension length of the connecting plate 310 in the arm head angle adjustment frame 300 can be adjusted, so that the adjustability of the wind turbine hoisting rod head 100 against the angle α is achieved, thereby efficiently and conveniently changing the load force of the wind turbine hoisting rod head and the distance of the hoisted object from touching the rod.

[0049] Optionally, for the pivot connection end 210, an ear plate with a first pin hole can be provided at the arm end B, and a second pin hole can be provided at the rod end A. The first pin hole is aligned with the second pin hole and a pin shaft is inserted together, so that the arm end B is pivotally connected to the rod end A. The structure is simple, stable and easy to connect.

[0050] Optionally, the arm head angle adjustment frame 300 can have the following three situations with the top arm 200 and the wind power hoisting rod head 100. First, the connecting plate 310 can be in abutment with both the free portion 220 and the rod end A; second, the connecting plate 310 can be in abutment with the free portion 220, and the connecting plate 310 can be hinged with the rod end A; third, the connecting plate 310 can be hinged with the free portion 220, and the connecting plate 310 can be in abutment with the rod end A. When the connecting plate 310 is in abutment with both the free portion 220 and the rod end A, the arm head angle adjustment frame 300, under the action of its own weight, enables the connecting plate 310 to be in abutment with the free portion 220, and under the action of the own weight of the wind power hoisting rod head 100, the rod end A can be in abutment with the connecting plate 310. In this way, the structure is simple and can be accurately abutted.

[0051] Optionally, the connecting plate 310 may be a plate-like structure with different structures at both ends, one end of which is a plate pivot end and the other end is a plate abutment end. The structure of the plate abutment end may be a slotted rod structure, for example, an abutment rod is formed on the connecting plate 310, and an abutment groove is formed on the rod end A. The abutment rod can abut in the abutment groove. It should be noted that the groove direction and the groove size of the abutment groove need to ensure that they do not hinder the normal movement trajectory of the rod end A and can abut and fix the rod end A. For the plate pivot end, it may be a lug structure, and a lug structure is formed on the corresponding free portion 220 or the rod end A. Pin holes are formed on both lug structures, and can be connected with the pin shaft together to realize the hinge connection between the connecting plate 310 and the free portion 220 or the rod end A.

[0052] Optionally, for the connection relationship between the connecting plate 310 and the connecting frame 320, a plurality of pivot rods can be formed in the length direction L of the connecting plate 310, and a support ear can be formed on the connecting frame 320, and a pivot hole can be formed on the support ear. By sleeved the pivot hole on the corresponding pivot rod, the pivot position of the connecting frame 320 on the connecting plate 310 can be adjusted.

[0053] Specifically, for adjusting the extension length of the connecting plate 310, in one embodiment, a plurality of pin holes 1 are arranged at intervals along the plate length direction L on the connecting plate 310, and a connecting frame pin rod is provided on the connecting frame 320, and the connecting frame pin rod passes through one of the plurality of pin holes 1, such as Figure 1 and Figure 2 As shown. Taking the pivotal connection between the connecting plate 310 and the connecting frame 320 and the free part 220 as an example, the connecting frame pin rod can be matched with a plurality of pin holes 1, so that the connecting plate 310 and the connecting plate 310, the connecting frame 320 and the free part 220 can form triangular structures of different sizes, so that the plate abutment end position of the connecting frame located at the bottom of the three-family structure can be adjusted. In this way, the adjustment of the abutment angle α of the wind power hoisting rod head 100 is achieved, thereby efficiently and conveniently changing the hoisting force of the wind power hoisting rod head. It should be noted that for adjusting the extension length of the connecting plate 310, a connecting plate 310 with a pin hole 1 can also be used. When adjustment is required, the connecting plate 310 of the corresponding length can be directly replaced. The specific disassembly and assembly process is common knowledge in the field and will not be described in detail here.

[0054] On the one hand, regarding the connection relationship between the free portion 220 and the connecting plate 310, in one embodiment, the connecting plate 310 includes a top section arm end portion arranged toward the free portion 220, a connecting plate pin hole 4 is formed at the top section arm end portion, an arm pin shaft 5 is passed through the connecting plate pin hole 4, a top section arm ear plate 2 extending toward the rod end A is provided on the free portion 220, an ear plate opening groove 3 is formed on the top section arm ear plate 2, and the arm pin shaft 5 can be inserted into the ear plate opening groove 3, so that the connecting plate 310 can abut against the free portion 220, as shown in FIG. Figure 1 , Figure 2 and Figure 4 The connection between the connecting plate 310 and the free part 220 is shown. The arm ear plate 2 can be located at the end position of the free part 220 away from the pivot connection end 210, wherein the arm pin 5 can be installed through the connecting plate pin hole 4, and the arm pin 5 forms a convex end of the abutment relationship. The ear plate opening groove 3 is formed with an opening toward the end of the top arm section, so as to serve as the groove end of the abutment relationship. Under the gravity of the arm head angle adjustment frame 300, the convex end can be inserted into the groove end to form the abutment relationship.

[0055] In one embodiment, the free portion 220 is provided with a joint arm ear plate 2 extending toward the rod end A, the joint arm ear plate 2 is formed with a joint arm ear plate pin hole, and the end of the connecting plate 310 is formed with a connecting plate pin hole 4, the joint arm ear plate pin hole and the connecting plate pin hole 4 are axially aligned and are connected together with an arm pin shaft 5. Figure 1 , Figure 2 and Figure 3 As shown. The connecting plate pin hole 4 of the connecting plate 310 is axially aligned with the pin hole of the arm lug plate, that is, the axis of the two holes coincides, and the arm pin shaft 5 is passed through the connecting plate pin hole 4 and the arm lug plate pin hole, so that the free part 220 and the connecting plate 310 are pivotally connected. The structure is simple and easy to disassemble and assemble.

[0056] Further, regarding the positional relationship between the connecting frame 320 and the connecting plate 310 on the arm end B, in one embodiment, a frame connecting end 6 pivotally connected to the connecting frame 320 is formed on the arm end B, and the frame connecting end 6 is sandwiched between the pivot connecting end 210 and the free portion 220 in the arm height direction of the arm end B, such as Figure 3 In this way, the abutting position between the connecting plate 310 and the rod end A is far away from the pivot connection end 210, which reduces the abutting pressure and ensures the stable abutting of the wind power hoisting rod head 100.

[0057] On the other hand, regarding the connection relationship between the rod end A and the connecting plate 310, in one embodiment, the connecting plate 310 further includes a rod head end arranged toward the rod end A, and the rod head end is provided with an open slot 9 that penetrates radially, and a rod head ear plate 7 extending toward the free portion 220 is installed on the rod end A, and a rod head pin 8 is vertically connected to the plate surface of the rod head ear plate 7, and the rod head pin 8 can be inserted into the open slot 9, so that the rod end A can abut the connecting plate 310. Figure 1 and Figure 2 As shown. It can be understood that the rod head ear plate 7 can be installed at the end of the rod end A away from the pivot connection end 210, so that the abutment pressure can be reduced. A rod head pin hole can be formed on the rod head ear plate 7, and the rod head pin shaft 8 passes through the rod head pin hole, and limit gears are set at both ends of the rod head pin shaft 8 and the position of the rod head pin hole to prevent the rod head pin shaft 8 from being displaced on the rod head ear plate 7. In this way, the accuracy and stability of the abutment can be guaranteed. The diameter of the opening groove 9 can match the diameter of the rod head pin shaft 8. The opening direction of the opening groove 9 should be on the movement path of the rod head pin shaft 8 when the rod end A pivots. In this way, the rod head pin shaft 8 can be inserted and abutted against the opening groove 9, and the rod end A can abut against the connecting plate 310, so as to realize the rapid fixation of the position between the wind power hoisting rod head 100 and the top section arm 200.

[0058] Furthermore, in order to ensure the stability of the connection between the connecting plate 310 and the connecting frame 320. In one embodiment, there are two connecting plates 310 arranged in parallel and spaced apart, and the connecting frame 320 is sandwiched between the two connecting plates 310. Figure 3 As shown, it can be understood that two pivot connection ends located on the same pivot axis are formed between the connecting frame 320 and the connecting plate 310, so that the pressure resistance of the arm head angle adjustment frame 300 is improved to ensure the stable operation of the wind power hoisting arm head.

[0059] Since the wind power hoisting rod head 100 will be subjected to a large impact after unloading, at this time, since the free portion 220 is not connected to the rod end A, the wind power hoisting rod head 100 has the risk of tipping over. Therefore, in one embodiment, the wind power hoisting arm head also includes an anti-tilt member 400, one end of which is pivotally connected to the rod end A, and the other end is pivotally connected to the arm end B, so as to limit the maximum angle between the rod end A and the arm end B toward the connecting plate 310. It can be understood that the angle is the angle formed between the arm end B, the pivot connection end 210 and the rod end A. A safety connector, i.e., an anti-tilt member 400, is provided between the rod end A and the arm end B. When the wind turbine hoisting rod head 100 is unloaded, the anti-tilt member 400 pulls the wind turbine hoisting rod head 100 to limit the maximum value of the angle. When the wind turbine hoisting rod head 100 rotates to the maximum angle, it receives the pulling force of the anti-tilt member 400, thereby preventing the wind turbine hoisting rod head 100 from tipping over. The anti-tilt member 400 may be a rod-shaped member with multiple sections pivotally connected, or a steel cable member connected with a steel wire rope.

[0060] Regarding the specific structure of the anti-roll component 400, in one embodiment, the anti-roll component 400 includes an anti-roll rod end link 410 and an anti-roll arm end link 420 that are pivotally connected, the anti-roll rod end link 410 is pivotally connected to the rod end A, and the anti-roll arm end link 420 is pivotally connected to the arm end B. Figure 1 Through the pivotal connection between the anti-roll bar end link 410 and the anti-roll arm end link 420, it is ensured that the wind power hoisting rod head 100 can pivot around the pivot connection end 210 within a certain angle range, and the structure is simple and easy to disassemble and assemble.

[0061] Further, regarding the positional relationship between the anti-roll arm end link 420 and the frame connection end 6 on the arm end B, in one embodiment, the anti-roll arm end link 420 is formed with an anti-roll connection end 10 pivotally connected to the arm end B, and in the arm height direction of the arm end B, the anti-roll connection end 10 is sandwiched between the pivot connection end 210 and the frame connection end 6, such as Figure 1 and Figure 3 In this way, the support strength of the arm head angle adjustment frame 300 is ensured, the arm head angle adjustment frame 300 and the anti-tilt member 400 do not interfere with each other, the structure is compact, and the spatial layout is reasonable.

[0062] On the other hand, the present invention also provides a crane, which includes the above-mentioned wind power hoisting arm head. The crane can perform wind power hoisting operations. The wind power hoisting arm head adopts a combination of a wind power hoisting rod head 100, a top section arm 200 and an arm head angle adjustment frame 300. The corresponding arm head angle adjustment frame 300 can be installed or adjusted according to the specific conditions of wind power hoisting. A triangular structure is formed by a connecting plate 310, a connecting frame 320 and a free portion 220. The connecting plate 310 extends from the triangular structure and forms a plate abutment end. Without fixed connection, the wind power hoisting rod head 100 can be pressed against the plate abutment end by its own gravity, which is convenient for disassembly and assembly. The position of the plate abutment end can be changed by the adjustability of the pivot position between the connecting plate 310 and the connecting frame 320, so that the adjustability of the abutment angle α of the wind power hoisting rod head 100 is achieved. At the same time, the pole lifting end opposite to the pole end A in the wind turbine hoisting pole head 100 can be used to lift objects, and the distance between the lifted object and the top arm 200 can be adjusted according to the abutment angle α. In this way, interference between the lifted object and the top arm 200 can be avoided, and the lifting force of the wind turbine hoisting pole head and the distance of the lifted object from touching the pole can be changed efficiently and conveniently.

[0063] It should be particularly noted that other structures and functions of the wind turbine hoisting arm and the crane in the embodiment of the present invention are well known to ordinary technicians in the field, and will not be described here in order to reduce redundancy.

[0064] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention.

[0065] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships known based on the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0070] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. Wind power hoisting arm head, characterized in that: The wind power hoisting arm head comprises: A wind power hoisting pole head (100) having a pole end (A); A top arm (200) having an arm end (B), the arm end (B) comprising a pivot connection end (210) pivotally connected to the rod end (A) and a free portion (220); and An arm head angle adjustment frame (300) comprises a connecting plate (310) and a connecting frame (320) pivotally mounted on the connecting plate (310) in an adjustable position, wherein an end of the connecting frame (320) is pivotally connected to the free portion (220); One of the two ends of the connecting plate (310) is in contact with one of the free portion (220) and the rod end (A), and the other of the two ends of the connecting plate (310) is in contact with or hinged with the other of the free portion (220) and the rod end (A); The connecting plate (310) includes a top arm end portion arranged toward the free portion (220), a connecting plate pin hole (4) formed at the top arm end portion, an arm pin shaft (5) passing through the connecting plate pin hole (4), a top arm ear plate (2) extending toward the rod end (A) is provided on the free portion (220), an ear plate opening groove (3) is formed on the top arm ear plate (2), and the arm pin shaft (5) can be inserted into the ear plate opening groove (3), so that the connecting plate (310) can abut against the free portion (220).

2. The wind turbine hoisting arm head according to claim 1, characterized in that: A plurality of pin holes (1) are arranged at intervals on the connecting plate (310) along the length direction (L) of the plate, and a connecting frame pin rod is provided on the connecting frame (320), and the connecting frame pin rod passes through one of the plurality of pin holes (1).

3. The wind turbine hoisting arm head according to claim 1, characterized in that: A frame connection end (6) pivotally connected to the connection frame (320) is formed on the arm end (B); in the arm height direction of the arm end (B), the frame connection end (6) is sandwiched between the pivot connection end (210) and the free portion (220).

4. The wind turbine hoisting arm head according to any one of claims 1 to 3, characterized in that: The connecting plate (310) also includes a rod head end portion arranged toward the rod end portion (A), the rod head end portion is provided with a radially penetrating open groove (9), and a rod head ear plate (7) extending toward the free portion (220) is installed on the rod end portion (A), and a rod head pin shaft (8) is vertically connected on the plate surface of the rod head ear plate (7), and the rod head pin shaft (8) can be inserted into the open groove (9), so that the rod end portion (A) can abut against the connecting plate (310).

5. The wind turbine hoisting arm head according to claim 4, characterized in that: There are two connecting plates (310) arranged in parallel and at intervals, and the connecting frame (320) is sandwiched between the two connecting plates (310).

6. The wind turbine hoisting arm head according to claim 3, characterized in that: The wind turbine hoisting arm head also includes an anti-tilt component (400), one end of the anti-tilt component (400) is pivotally connected to the rod end (A), and the other end is pivotally connected to the arm end (B), so as to limit the maximum angle between the rod end (A) and the arm end (B) toward the side of the connecting plate (310).

7. The wind turbine hoisting arm head according to claim 6, characterized in that: The anti-roll component (400) comprises an anti-roll rod end link (410) and an anti-roll arm end link (420) which are pivotally connected, wherein the anti-roll rod end link (410) is pivotally connected to the rod end (A), and the anti-roll arm end link (420) is pivotally connected to the arm end (B).

8. The wind turbine hoisting arm head according to claim 7, characterized in that: The anti-tilt arm end link (420) is formed with an anti-tilt connection end (10) pivotally connected to the arm end (B); in the arm height direction of the arm end (B), the anti-tilt connection end (10) is sandwiched between the pivot connection end (210) and the frame connection end (6).

9. A crane, characterized in that The crane comprises a wind power hoisting arm head according to any one of claims 1 to 8.

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