Anti-falling device for maintenance in wind power tower drum

Abstract

The utility model discloses an anti-falling device for maintenance in a wind power tower. A folding type cover plate is arranged at the object lifting opening of the tower drum, the cover plate needs to be opened during overhaul, maintenance and lifting, and the cover plate needs to be closed when maintenance is finished. Due to misoperation of workers, personal falling accidents occur in history. The device comprises at least three annular stop levers which are arranged from top to bottom, wherein every two adjacent annular stop levers are connected through an adjusting connecting frame; the adjusting connecting frame comprises upper channel steel, lower channel steel and two connecting rod frames, each connecting rod frame comprises an upper connecting rod, a lower connecting rod and an H-shaped platform, one end of each upper connecting rod is hinged to the corresponding upper channel steel, the other end of each upper connecting rod is hinged to the corresponding H-shaped platform, one end of each lower connecting rod is hinged to the corresponding lower channel steel, and the other end of each lower connecting rod is hinged to the corresponding H-shaped platform. The other end of the lower connecting rod is hinged with the H-shaped platform; a screw hole is formed in each H-shaped platform, and a locking bolt is in threaded connection with the interior of each screw hole. The anti-falling device is used for preventing falling during maintenance in the wind power tower drum.

Description

Technical Field

[0001] The utility model relates to a wind power tower internal maintenance anti-falling device. Background Art

[0002] Wind turbine towers are designed to be over 60 meters tall. Because of their height, the platforms used for installation and maintenance are located far from the ground. While the access hatches and lifting openings are protected by protective covers, a fall could result in serious physical injury. The tower lifting openings are equipped with folding covers that must be opened during inspection and maintenance, and closed when maintenance is complete. Occasionally, falls have occurred due to operator error. Utility Model Content

[0003] The purpose of the utility model is to provide a wind power tower internal maintenance anti-fall device in order to solve the above-mentioned problems.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A wind power tower internal maintenance anti-fall device comprises at least three annular blocking rods arranged from top to bottom, with each adjacent two annular blocking rods connected by an adjustable connecting frame;

[0006] The adjusting connecting frame includes an upper channel steel, a lower channel steel and two connecting rod frames, each of the connecting rod frames includes an upper connecting rod, a lower connecting rod and an H-shaped platform, one end of the upper connecting rod is hinged to the upper channel steel, the other end of the upper connecting rod is hinged to the H-shaped platform, one end of the lower connecting rod is hinged to the lower channel steel, and the other end of the lower connecting rod is hinged to the H-shaped platform;

[0007] Each of the H-shaped platforms is provided with a screw hole, and a locking bolt is connected to the inner thread of the screw hole.

[0008] In the wind power tower internal maintenance anti-fall device, the upper channel steel is fixed with two upper limit frames arranged in opposite directions, and the upper limit frames are located between the two upper connecting rods.

[0009] The wind turbine tower internal maintenance anti-fall device is described, and two lower limit frames are respectively fixed at the upper and lower notches of the H-shaped platform. The two lower limit frames located at the upper notch are located on the outside of the two upper connecting rods, and the two lower limit frames located at the lower notch are located on the outside of the two lower connecting rods.

[0010] In the wind turbine tower internal maintenance anti-fall device, the annular retaining rod is a square ring retaining rod. Beneficial effects

[0011] 1. The utility model is fixed around the cover plate of the hanging opening to protect the hanging opening and prevent the danger of falling.

[0012] 2. The utility model can pull the annular barrier rod so that multiple annular barrier rods arranged above and below it can jointly form a blocking effect, surround the hanging opening, and effectively protect personnel.

[0013] 3. The utility model has a simple structure. When not in use, the multiple annular shielding rods can be lowered by adjusting the connecting frame, making it easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attachment Figure 1 It is the main view of the utility model;

[0015] Attachment Figure 2 It is a top view of the utility model;

[0016] Attachment Figure 3 It is attached Figure 1 AA section view;

[0017] Attachment Figure 4 It is attached Figure 2 BB section view;

[0018] Attachment Figure 5 It is attached Figure 3 Magnified view of part C;

[0019] Attachment Figure 6 It is attached Figure 4 An enlarged view of the D portion;

[0020] Attachment Figure 7 It is attached Figure 4 A magnified view of part E;

[0021] Attachment Figure 8 It is the main view when in use;

[0022] Attachment Figure 9 This is a top view when in use;

[0023] In the figure: 1. Annular stopper; 2. Adjusting connecting frame; 4. Lifting opening; 21. Upper channel steel; 22. Lower connecting rod; 23. H-shaped platform; 24. Upper connecting rod; 25. Upper limit frame; 26. Fixed shaft; 27. Locking bolt; 28. Screw hole; 29. Lower limit frame; 30. Lower channel steel; 31. Notch. DETAILED DESCRIPTION

[0024] Reference Figure 1-Figure 7 A wind power tower internal maintenance anti-fall device, which comprises at least three annular blocking rods 1 arranged from top to bottom, and each two adjacent annular blocking rods are connected by an adjustable connecting frame 2;

[0025] By setting the adjustment connecting frame, the distance between two adjacent annular retaining rings can be adjusted, so that the height of the entire anti-fall device can be adjusted.

[0026] The adjusting connecting frame includes an upper channel steel 21, a lower channel steel 30 and two connecting rod frames, each of the connecting rod frames includes an upper connecting rod 24, a lower connecting rod 22 and an H-shaped platform 23, one end of the upper connecting rod is hinged to the upper channel steel, one end of the upper connecting rod is connected to the upper channel steel through a fixed shaft 26, the other end of the upper connecting rod is hinged to the H-shaped platform, one end of the lower connecting rod is hinged to the lower channel steel, and the other end of the lower connecting rod is hinged to the H-shaped platform;

[0027] A screw hole 28 is formed on each of the H-shaped platforms, and a locking bolt 27 is threadedly connected to the inner thread of the screw hole.

[0028] The locking bolt is a long bolt that can be threaded into the screw holes of the two H-shaped platforms. When adjusting the height of the device, unscrew the locking bolt and then pull the annular baffle at the top to adjust the height of the device. After the adjustment is completed, the locking bolt is first threaded into the screw hole of one H-shaped platform, and then screwed into the screw hole of the other H-shaped platform. In this way, the two connecting rod frames of the adjustment frame can be fixed to ensure that the position of the adjustment frame at this time does not move, so that it can achieve stability after height adjustment.

[0029] The upper channel steel is fixed with two upper limit frames 25 arranged in opposite directions, and the upper limit frames are located between the two upper connecting rods.

[0030] Two lower limit frames 29 are fixed at the upper and lower notches 31 of the H-shaped platform respectively. The two lower limit frames located at the upper notch are symmetrically arranged and located on the outside of the two upper connecting rods, and the two lower limit frames located at the lower notch are symmetrically arranged and located on the outside of the two lower connecting rods.

[0031] By setting the upper limit frame and the lower limit frame, the rotation direction of the upper connecting rod and the lower connecting rod can be effectively limited. When the upper connecting rod rotates to the vertical position, the upper limit and the lower limit respectively contact the upper connecting rod.

[0032] The annular baffle is a square ring baffle.

[0033] Working principle: Refer to Figure 8-Figure 9When in use, place the device on the hanging port of the wind turbine tower, and then fix the square ring guard rod at the bottom to the tower platform with bolts. When performing maintenance operations, unscrew the locking bolts, and use the handheld device to move the square ring guard rod at the upper part to raise the height of the device. When it rises to the point where both the upper connecting rod and the lower connecting rod are in a vertical position, screw the locking screws back into the screw holes to fix the two H-shaped platforms. At this time, the device can be guaranteed to remain stable at this height. At this time, the device forms a protective fence structure, which can surround the hanging port to prevent personal falls.

Claims

1. A wind turbine tower internal maintenance anti-fall device, characterized by: The structure comprises at least three annular baffles arranged from top to bottom, and each two adjacent annular baffles are connected by an adjustable connecting frame; The adjusting connecting frame includes an upper channel steel, a lower channel steel and two connecting rod frames, each of the connecting rod frames includes an upper connecting rod, a lower connecting rod and an H-shaped platform, one end of the upper connecting rod is hinged to the upper channel steel, the other end of the upper connecting rod is hinged to the H-shaped platform, one end of the lower connecting rod is hinged to the lower channel steel, and the other end of the lower connecting rod is hinged to the H-shaped platform; Each of the H-shaped platforms is provided with a screw hole, and a locking bolt is connected to the inner thread of the screw hole.

2. The wind turbine tower internal maintenance anti-fall device according to claim 1 is characterized by: The upper channel steel is fixed with two upper limit frames arranged in opposite directions, and the upper limit frames are located between the two upper connecting rods.

3. The wind turbine tower internal maintenance anti-fall device according to claim 2 is characterized by: Two lower limit frames are fixed to the upper and lower notches of the H-shaped platform respectively. The two lower limit frames located at the upper notch are located outside the two upper connecting rods, and the two lower limit frames located at the lower notch are located outside the two lower connecting rods.

4. The wind turbine tower internal maintenance anti-fall device according to claim 3 is characterized by: The annular baffle is a square ring baffle.

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