Full-angle blade continuous adjustment spreader

Abstract

The full-angle blade continuous adjustment hoist of the present invention comprises: an upper clamp, an A-frame, a casing, a driving device, a lower clamp, a main beam, a bearing and a main shaft. The upper clamp and the lower clamp are respectively fixed on the upper and lower sides of both ends of the main beam. The main shaft is installed in the casing, one end of which extends out of the casing and is fixed in the center of the main beam. The main shaft and the main beam are perpendicular to each other. A bearing is installed on the main shaft in the casing near the main beam. The A-frame is hinged on the casing above the main shaft. The driving device is installed in the casing and drives the main shaft to move. The driving device comprises: a large gear, at least one small gear and at least one reduction motor. The large gear is fixed at the other end of the main shaft. The outer circumference of the large gear is meshed with at least one small gear. The small gear is driven by the reduction motor to drive the main shaft to rotate. The full-angle blade continuous adjustment hoist of the present invention can realize 360° full-angle continuous adjustment in large offshore blade installation operations, improve the lifting efficiency and reduce the installation cost.

Description

Technical Field

[0001] The invention relates to a sling, in particular to a sling with full-angle blade continuous adjustment. Background Art

[0002] In the hoisting operation of large blades, the rotation of the blades usually uses two large hydraulic systems to extend and retract to complete the deflection angle. The maximum deflection angle is generally ±90°. This structure is expensive and cannot meet the requirements of continuous deflection in a large range. Therefore, a gear-driven 360° full-angle blade continuous adjustment hoist is studied to achieve continuous angle adjustment of a larger range of large blades during installation, saving production costs and improving work efficiency. Summary of the invention

[0003] The invention of this application aims to solve the problem that a larger range of continuous angle adjustment is required when large blades are installed at sea, and to provide a full-angle blade continuous adjustment hanger, which saves production costs and improves work efficiency.

[0004] In order to achieve the invention purpose of this application, this application adopts the following technical solutions:

[0005] The present invention discloses a full-angle blade continuous adjustment hanger, which includes: an upper clamp, an A-frame, a casing, a driving device, a lower clamp, a main beam, a bearing and a main shaft. The upper clamp and the lower clamp are respectively fixed on the upper and lower sides of both ends of the main beam. The main shaft is installed in the casing, one end of which extends from the casing and is fixed to the center of the main beam. The main shaft and the main beam are perpendicular to each other. A bearing is installed on the main shaft in the casing near the main beam. The A-frame is hinged on the casing above the main shaft. The driving device is installed in the casing and drives the main shaft to move, wherein: the driving device includes: a large gear, at least one small gear and at least one reduction motor. The large gear is fixed to the other end of the main shaft, and the outer circumference of the large gear is meshed with at least one small gear. The small gear is driven by the reduction motor to drive the main shaft to rotate.

[0006] The present invention provides a full-angle blade continuous adjustment hanger, wherein: the driving device includes: a large gear, two small gears and two reduction motors, wherein one small gear is meshed with the outer circumference of the large gear, and the other small gear is meshed with the outer circumference of the large gear at a position symmetrical to the above-mentioned small gear, and the two small gears are driven by the reduction motors respectively to drive the main shaft to rotate.

[0007] The invention discloses a full-angle blade continuous adjustment hanger, which further comprises a brake device installed in the casing.

[0008] The present invention discloses a full-angle blade continuous adjustment hanger, wherein: the brake device includes: a friction plate, an upper pressure arm, a lower pressure arm and a tightening hydraulic cylinder, the friction plate is sleeved on the main shaft and fixed on the boss thereon, one end of the upper pressure arm and the lower pressure arm are pressed on the upper and lower ends of the circumference of the friction plate respectively, and an articulated shaft is installed on the upper pressure arm and the lower pressure arm, and the other ends of the upper pressure arm and the lower pressure arm are respectively connected to the tightening hydraulic cylinder, after the tightening hydraulic cylinder is pressurized, the upper pressure arm and the lower pressure arm rotate around the articulated shaft, so that the upper pressure arm and the lower pressure arm hold the friction plate, thereby achieving the purpose of braking.

[0009] The invention discloses a full-angle blade continuous adjustment hanger, wherein: the main shaft is fixed to the main beam through a key installed thereon, and flanges are also installed at the ends of the main shaft and the main beam to fix the main shaft and the main beam together.

[0010] The invention discloses a full-angle blade continuous adjustment hanger, wherein: a generator is also arranged on the casing, and the generator provides power for the hydraulic cylinder, the tightening hydraulic cylinder and the reduction motor.

[0011] The full-angle blade continuous adjustment hoisting device of the present invention can realize 360-degree full-angle continuous adjustment in large offshore blade installation operations, thereby improving the hoisting efficiency and reducing the installation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a forward schematic diagram of the full-angle blade continuous adjustment hanger of the present invention;

[0013] Figure 2 for Figure 1 Schematic side view of

[0014] Figure 3 for Figure 1 Schematic side view of the main shaft, large gear and small gear in the figure.

[0015] exist Figures 1 to 3 Among them, number 1 is the upper clamping jaw; number 2 is the A-frame; number 3 is the upper pressure arm; number 4 is the casing; number 5 is the large gear; number 6 is the generator; number 7 is the lower clamping jaw; number 8 is the main beam; number 9 is the bearing; number 10 is the main shaft; number 11 is the friction plate; number 12 is the lower pressure arm; number 13 is the tightening hydraulic cylinder; number 14 is the flange; number 15 is the blade; number 16 is the small gear; number 17 is the articulated shaft; number 18 is the boss. DETAILED DESCRIPTION

[0016] like Figure 1 and Figure 2As shown, the full-angle blade continuous adjustment hanger of the present invention comprises: an upper clamping jaw 1, an A-frame 2, a housing 4, a driving device, a lower clamping jaw 7, a main beam 8, a bearing 9 and a main shaft 10. The upper clamping jaw 1 and the lower clamping jaw 7 are respectively fixed on the upper and lower sides of the two ends of the main beam 8. The main shaft 10 is installed in the housing 4, one end of which extends from the housing 4 and is fixed to the center of the main beam 8. The main shaft 10 and the main beam 8 are perpendicular to each other. The bearing 9 is installed on the main shaft 10 in the housing 4 near the main beam 8. The main shaft 10 is fixed to the main beam 8 through a key installed thereon. Flanges 14 are also installed at the ends of the main shaft 10 and the main beam 8 to fix the main shaft 10 and the main beam 8 together. The A-frame 2 is hinged on the housing 4 above the main shaft 10. The driving device is installed in the housing 4 and drives the main shaft 10 to move. A generator 6 is also installed on the housing 4, which provides power for the hydraulic cylinder, the tightening hydraulic cylinder 13 and the reduction motor.

[0017] like Figure 3 As shown, the driving device includes: a large gear 5, two small gears 16 and two reduction motors, wherein one small gear 16 is meshed with the outer circumference of the large gear 5, and another small gear 16 is meshed with the outer circumference of the large gear 5 at a position symmetrical to the above-mentioned small gear 16. The two small gears 16 are respectively driven by the reduction motors to drive the main shaft 10 to rotate.

[0018] like Figure 1 As shown, the full-angle blade continuous adjustment hanger of the present invention also includes: a brake device, which is installed in the housing 4. The brake device includes: a friction plate 11, an upper pressure arm 3, a lower pressure arm 12 and a tightening hydraulic cylinder 13. The friction plate 11 is sleeved on the main shaft 10 and fixed on the boss 18 thereon. One end of the upper pressure arm 3 and the lower pressure arm 12 are pressed on the upper and lower ends of the circumference of the friction plate 11 respectively. The upper pressure arm 3 and the lower pressure arm 12 are provided with a hinge shaft 17. The other ends of the upper pressure arm 3 and the lower pressure arm 12 are respectively connected to the tightening hydraulic cylinder 13. After the tightening hydraulic cylinder 13 is pressurized, the upper pressure arm 3 and the lower pressure arm 12 rotate around the hinge shaft 17, so that the upper pressure arm 3 and the lower pressure arm 12 hold the friction plate 11 to achieve the purpose of braking.

[0019] The crane lifts the entire lifting sling and blade 15 through the upper lifting point of the A-frame 2. The A-frame 2 is connected to the casing 4 through a pin shaft, and the upper clamping jaw 2 and the lower clamping jaw 7 are connected to the upper clamping jaw 2 and the lower clamping jaw 7 at both ends of the main beam 8 through pin shafts, and the upper clamping jaw 2 is close to the root end of the blade 15. The center of gravity of the blade is located between the upper clamping jaw 2 and the lower clamping jaw 7. The upper clamping jaw 2 and the lower clamping jaw 7 can clamp various types of wind turbine blades, realize the clamping surface that matches the blade shape, and ensure the uniform pressure and safety during the lifting process of the blade 15. The main shaft 10 is fixed to the main beam 8, and the main shaft 10 is powered by two reduction motors. The two small gears 16 drive the large gear 5 at the end of the main shaft 10 to achieve 360° rotation, thereby adjusting the angle of the blade 15 clamped in the upper clamping jaw 2 and the lower clamping jaw 7. When the adjustment angle is reached, the brake device starts to work, and the upper pressure arm 3 and the lower pressure arm 11 are driven by the tightening hydraulic cylinder 14 to hold the friction plate 11 on the main shaft 10, so as to achieve the purpose of braking.

[0020] The above is a schematic description of the present invention and its implementation methods, which is not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and creatively designs methods and embodiments similar to the technical solution without departing from the purpose of the present invention, they should all fall within the scope of protection of this patent.

Claims

1. A full-angle blade continuous adjustment hanger, which include: An upper clamp (1), an A-shaped frame (2), a casing (4), a driving device, a lower clamp (7), a main beam (8), a bearing (9) and a main shaft (10). The upper clamp (1) and the lower clamp (7) are respectively fixed on the upper and lower sides of both ends of the main beam (8). The main shaft (10) is installed in the casing (4). One end of the main shaft (10) extends from the casing (4) and is fixed to the center of the main beam (8). The main shaft (10) and the main beam (8) are perpendicular to each other. A bearing (9) is installed on the main shaft (10) in the casing (4) near the main beam (8). The A-shaped frame (2) is hinged to the main shaft. The main shaft (10) is provided with a casing (4) above the main shaft (10), wherein the driving device is installed in the casing (4) and drives the main shaft (10) to move, and is characterized in that the driving device comprises: a large gear (5), at least one small gear (16) and at least one reduction motor, the large gear (5) is fixed to the other end of the main shaft (10), the outer circumference of the large gear (5) is meshed with the at least one small gear (16), and the small gear (16) is driven by the reduction motor to drive the main shaft (10) to rotate; the driving device comprises: a large gear (5), two small gears (16) and two reduction motors, wherein A small gear (16) is meshed with the outer circumference of the large gear (5), and another small gear (16) is meshed with the outer circumference of the large gear (5) at a position symmetrical to the above-mentioned small gear (16). The two small gears (16) are driven by reduction motors to drive the main shaft (10) to rotate. It also includes a brake device, which is installed in the housing (4); the brake device includes a friction plate (11), an upper pressure arm (3), a lower pressure arm (12) and a tightening hydraulic cylinder (13). The friction plate (11) is sleeved on the main shaft (10) and fixed. The upper pressing arm (3) and the lower pressing arm (12) are fixed on a boss (18) thereon, and one end of the upper pressing arm (3) and the lower pressing arm (12) are pressed on the upper and lower ends of the circumference of the friction plate (11) respectively. The upper pressing arm (3) and the lower pressing arm (12) are provided with a hinge shaft (17). The other ends of the upper pressing arm (3) and the lower pressing arm (12) are connected to a tightening hydraulic cylinder (13) respectively. After the tightening hydraulic cylinder (13) is pressurized, the upper pressing arm (3) and the lower pressing arm (12) rotate around the hinge shaft (17), so that the upper pressing arm (3) and the lower pressing arm (12) hold the friction plate (11), thereby achieving the purpose of braking.

2. The full-angle blade continuous adjustment hanger as claimed in claim 1, Features: The main shaft (10) is fixed to the main beam (8) via a key mounted thereon, and flanges (14) are also mounted at the ends of the main shaft (10) and the main beam (8) to fix the main shaft (10) and the main beam (8) together.

3. The full-angle blade continuous adjustment hanger as claimed in claim 2, Features: A generator (6) is also mounted on the casing (4) and provides power to the hydraulic cylinder, the tightening hydraulic cylinder (13) and the reduction motor.

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