Wind power tower crane and construction method

Abstract

The invention provides a wind power tower crane and a construction method.The wind power tower crane comprises a tower crane body arranged on the outer side of a tower column, a mechanical gripper assembly is arranged on the tower crane body and comprises a mechanical gripper, a movable formwork and position adjusting wheels, the position adjusting wheels are arranged on the left side and the right side of the movable formwork correspondingly, and a connecting rod is connected between the two position adjusting wheels; mechanical claws are connected to the two ends of the side, away from the tower crane body, of the connecting rod correspondingly, a climbing column unit is connected to the rear side of the movable formwork, and the movable formwork vertically moves along the tower crane body through the climbing column unit. The wind power tower crane has the beneficial effects that it can be effectively ensured that the angle of the mechanical gripper is accurately controlled within the extremely small error range, and the wind power tower crane can be modularly mounted and dismounted and can be repeatedly used; and the smooth proceeding of the project is ensured, a large amount of manpower and time cost is saved, and the project cost is saved.

Description

Technical Field

[0001] The invention belongs to the field of wind power tower cranes, and particularly relates to a wind power tower crane and a construction method thereof. Background Art

[0002] Traditional tower cranes used for offshore wind power construction are usually bulky and costly, which greatly increases the upfront investment cost of wind power projects. The lifting systems of some traditional tower cranes are not intelligent enough to automatically optimize the power output according to the weight of the lifted object and the working conditions, resulting in a slow lifting speed and affecting the construction efficiency. Moreover, when lifting large wind power components, it may be necessary to adjust the lifting angle and force multiple times, increasing the construction time and difficulty. Traditional offshore wind power construction methods mostly rely on large wind power installation platforms or lifting vessels for the installation of tower cranes and the lifting of wind power components. The rental or construction costs of these devices are extremely high, greatly increasing the construction cost. And in traditional construction methods, the installation and disassembly processes of tower cranes are relatively cumbersome, requiring a large amount of time and labor costs. For example, when installing the tower body, it may be necessary to adjust and align multiple times to ensure the verticality and stability of the tower body, which reduces the construction efficiency to a certain extent. Summary of the Invention

[0003] In view of this, the invention aims to overcome the above deficiencies in the prior art and proposes a wind power tower crane and a construction method thereof.

[0004] To achieve the above object, the technical solution of the invention is realized as follows:

[0005] A wind power tower crane includes a tower crane body disposed outside a tower column. A mechanical gripper assembly is provided on the tower crane body. The mechanical gripper assembly includes a mechanical claw hand, a moving mold frame, and adjusting wheels. Adjusting wheels are provided on both the left and right sides of the moving mold frame, and a connecting rod is connected between the two adjusting wheels. Mechanical claw hands are connected to both ends of the side of the connecting rod away from the tower crane body. A climbing column unit is connected to the rear of the moving mold frame, and the moving mold frame moves vertically along the tower crane body through the climbing column unit.

[0006] Further, the climbing column unit includes a double winch.

[0007] Further, each adjusting wheel can move longitudinally along the moving mold frame, and the adjusting wheel is rotatably connected to the connecting rod and can move in the length direction of the connecting rod.

[0008] The present application also provides a construction method for a wind power tower crane, including the following steps:

[0009] A. The mechanical gripper grabs the wind turbine blade, keeps it stable, and moves upward through the climbing column unit;

[0010] B. When rising to near the installation position of the offshore wind turbine, the mechanical gripper adjusts the position of the mechanical gripper through the position adjustment wheel and the moving formwork, and adjusts it to a suitable installation position;

[0011] C. After the adjustment is completed, install the wind turbine blades on the offshore wind turbine.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] A wind power tower crane described in the present invention can effectively ensure that the angle of the mechanical gripper is accurately controlled within a very small error range, and the wind power tower crane can be modularly installed and disassembled and reused; it ensures the smooth progress of the project, saves a large amount of labor and time costs, and saves project expenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0015] Figure 1 is a schematic structural diagram of the wind power tower crane described in an embodiment of the present invention;

[0016] Figure 2 is a side view of the wind power tower crane described in an embodiment of the present invention;

[0017] Figure 3 is a side view of the mechanical gripper assembly described in an embodiment of the present invention;

[0018] Figure 4 is a schematic structural diagram of the mechanical gripper assembly described in an embodiment of the present invention;

[0019] Figure 5 is a schematic structural diagram of the mechanical gripper assembly grasping the wind turbine blade described in an embodiment of the present invention;

[0020] Figure 6 is a schematic structural diagram of the mechanical gripper assembly grasping the wind turbine blade in an inclined state described in an embodiment of the present invention;

[0021] Figure 7 is a schematic construction state diagram of the wind power tower crane described in an embodiment of the present invention;

[0022] Figure 8 is a schematic construction state diagram of the wind power tower crane after adjusting the angle of the wind turbine blade at the top described in an embodiment of the present invention.

[0023] DESCRIPTION OF THE REFERENCE NUMERALS:

[0024] 1. Offshore wind turbine; 2. Tower crane body; 3. Mechanical gripper assembly; 4. Mechanical gripper; 5. Position adjusting wheel; 6. Moving formwork; 7. Column climbing unit; 8. Wind turbine blade; 9. Connecting rod. Detailed implementation mode

[0025] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "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 a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0028] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0029] As shown in the figure, a wind power tower crane includes a tower crane body 2 provided on the outside of the tower column. A mechanical gripper assembly 3 is provided on the tower crane body 2. The mechanical gripper assembly 3 includes a mechanical gripper 4, a moving formwork 6, and a position adjusting wheel 5. Position adjusting wheels 5 are provided on both the left and right sides of the moving formwork 6, and a connecting rod 9 is connected between the two position adjusting wheels 5. Mechanical grippers 4 are connected to both ends of the side of the connecting rod 9 away from the tower crane body 2. A column climbing unit 7 is connected to the rear of the moving formwork 6. The moving formwork 6 moves vertically along the tower crane body 2 through the column climbing unit 7. In this embodiment, the tower column is the pillar of the offshore wind turbine 1.

[0030] The climbing column unit 7 includes a double winch. In this embodiment, the double winch includes a motor, a drum, a steel wire rope, and a pulley block. The double winch converts electrical energy into mechanical energy through the motor, drives the drum to rotate, winds the steel wire rope, and lifts or lowers the moving formwork 6 through the pulley block. Here, since the double winch is common knowledge that can be mastered by those skilled in the art, the specific connection structure is not described in detail here.

[0031] Each positioning wheel 5 can move longitudinally along the moving formwork 6, and the positioning wheel 5 is rotatably connected to the connecting rod 9 and can move in the length direction of the connecting rod 9. In this embodiment, when the angle of the wind turbine blade 8 needs to be adjusted, first, the positions of the two positioning wheels 5 on the moving formwork 6 are adjusted. The connecting rod 9 deflects at an angle as the two positioning wheels 5 move, and then the mechanical gripper 4 adjusts its angle along with the connecting rod 9, finally realizing the angle adjustment of the wind turbine blade 8. In this embodiment, racks are fixedly connected to the moving formwork 6 corresponding to the positioning wheels 5. The positioning wheels 5 are of a gear structure and mesh with the corresponding racks. A clamping plate is movably clamped at each position corresponding to the positioning wheels 5 on the moving formwork 6. The clamping plate includes a U-shaped portion formed integrally and limiting portions arranged oppositely at both ends of the opening of the U-shaped portion. A positioning motor is fixedly connected to the outside of the clamping plate. The output shaft of the positioning motor passes through the clamping plate and is fixedly connected to the corresponding positioning wheel 5; the connecting rod 9 is rotatably connected to one of the clamping plates through a limiting shaft. A strip-shaped limiting groove is formed in the other end of the connecting rod 9 along the length direction. A limiting post is fixedly connected to the other clamping plate, and the limiting post passes through the limiting groove. By driving the positioning wheel 5 to rotate through the positioning motor, the position of the positioning wheel 5 on the moving formwork 6 is adjusted. At the same time, due to the movement of the positioning wheel 5, the offset of the connecting rod 9 is realized.

[0032] This application also provides a construction method for a wind power tower crane, including the following steps:

[0033] A. The mechanical gripper grabs the wind turbine blade 8, maintains stability, and moves upward through the climbing column unit 7;

[0034] B. When rising to a position close to the installation position of the offshore wind turbine 1, the mechanical gripper 4 adjusts the position of the mechanical gripper through the positioning wheels 5 and the moving formwork 6 and adjusts to a suitable installation position;

[0035] C. After the adjustment is completed, the wind turbine blade 8 is installed on the offshore wind turbine 1.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wind power tower crane, characterized in that: It includes a tower crane body arranged on the outside of the tower column, and a mechanical gripper assembly is arranged on the tower crane body, the mechanical gripper assembly includes a mechanical claw, a mobile formwork, and a positioning wheel, positioning wheels are arranged on the left and right sides of the mobile formwork, and a connecting rod is connected between the two positioning wheels, and mechanical claws are connected to both ends of the side of the connecting rod away from the tower crane body, and a climbing column unit is connected to the rear side of the mobile formwork, and the mobile formwork moves vertically along the tower crane body through the climbing column unit.

2. A wind power tower crane according to claim 1, characterized in that: The column climbing unit includes twin winches.

3. A wind power tower crane according to claim 1, characterized in that: Each positioning wheel can move longitudinally along the movable mold frame, and the positioning wheel is rotationally connected to the connecting rod and can move in the length direction of the connecting rod.

4. A construction method using a wind power tower crane as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: A. The mechanical gripper grabs the fan blade, keeps it stable, and moves upward through the climbing unit; B. When it rises to the installation position close to the offshore wind turbine, the mechanical gripper adjusts the position of the mechanical gripper through the positioning wheel and the mobile mold frame, and adjusts it to a position suitable for installation; C. After adjustment, install the fan blades onto the offshore wind turbine.

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