Platform extension anti-falling device

Abstract

The invention discloses a platform extension anti-falling device in the technical field of extension platforms, the platform extension anti-falling device comprises an anti-falling frame and a plurality of slow descending mechanisms, the anti-falling frame is fixedly connected with a connecting plate, and the connecting plate is used for transversely fixing the anti-falling frame to the edge of an extension platform; the multiple slow descending mechanisms are evenly arranged on the edge of the anti-falling frame in a surrounding mode at intervals, the bottoms of the multiple slow descending mechanisms are connected with the same safety net, and the slow descending mechanisms are used for buffering constructors through gradual descending when the constructors fall onto the safety net, so that impact force borne by the constructors is reduced. According to the scheme, the problem that constructors may be hurt by the anti-falling net when falling from the expansion platform of the offshore wind power hoisting platform is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion platforms, and in particular to a platform extension anti-falling device. Background Art

[0002] The offshore wind power hoisting platform, also known as the installation platform or wind power installation ship, is a ship or floating platform specially designed for the construction and maintenance of offshore wind farms. This type of platform is equipped with the necessary equipment and facilities to transport the various components of the wind turbine to the designated location, and to carry out hoisting and installation. Due to construction needs, the hoisting platform often adds an expansion platform. In order to meet construction needs, in order to avoid the guardrails on the edge of the expansion platform affecting the construction, the guardrails will be removed and anti-fall devices will be installed on the edge of the expansion platform. The current anti-fall device mainly sets an anti-fall net at the edge of the expansion platform. However, this type of anti-fall net has no buffer structure. When construction workers fall onto the anti-fall net, they may be strangled after contacting the rope of the anti-fall net under the action of their own gravity. Summary of the invention

[0003] The present invention is intended to provide a platform extension anti-fall device to solve the problem that construction workers may be strangled by the anti-fall net when falling from the extension platform of the offshore wind power hoisting platform.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a platform extension anti-fall device, comprising an anti-fall frame and multiple slow-down mechanisms, the anti-fall frame is fixedly connected to a connecting plate, and the connecting plate is used to laterally fix the anti-fall frame at the edge of the expansion platform; multiple slow-down mechanisms are evenly spaced around the edge of the anti-fall frame, and the bottoms of the multiple slow-down mechanisms are connected to the same safety net, and the slow-down mechanisms are used to cushion the construction workers by gradually descending when the construction workers fall onto the safety net, thereby reducing the impact force on the construction workers.

[0005] Furthermore, the slow-descent mechanism includes a vertical sealing cylinder with an open end facing downward. A piston is connected to a piston inside the sealing cylinder, and a pull rod is fixedly connected to the piston. The bottom end of the pull rod vertically passes through the opening downward and is located outside the sealing cylinder. Several pull rods of the slow-descent mechanism are fixedly connected to the edge of the safety net.

[0006] Furthermore, an air intake pipe is fixedly connected to the top of the side wall of each sealing cylinder, the air intake pipe is communicated with the interior of the sealing cylinder, and a regulating valve for adjusting the air intake amount is provided on the air intake pipe.

[0007] Furthermore, the open end of each sealing cylinder is fixedly connected to a limiting plate, and a avoidance hole for the pull rod to pass through is provided at the center of the limiting plate.

[0008] Furthermore, a sealing plug is coaxially fixedly connected to the pull rod, and the sealing plug is used to close the avoidance hole from below the avoidance hole.

[0009] Furthermore, the anti-fall frame includes two transverse rods and two longitudinal rods, the two transverse rods and the two longitudinal rods are fixedly connected to form a rectangular frame, two connecting plates are provided, and the two connecting plates are respectively fixedly connected to the bottom ends of the two longitudinal rods, and a plurality of the slow-descent mechanisms are evenly spaced and fixedly connected to the lower surface of the rectangular frame.

[0010] Beneficial effects of the present invention:

[0011] 1. This solution absorbs the impact force through the cooperation of the sealing tube and the pull rod, slows down the descent, reduces the reaction force on the falling person, and thus reduces the possibility of injury due to the fall.

[0012] 2. Compared with the existing method of connecting the edge of the safety net with a spring and using the elastic force of the spring to reduce the impact, the safety net of the anti-falling device in this solution will not move up and down multiple times after catching the falling person, thus avoiding the situation where the falling person is bounced up and bounced out of the safety net due to the elastic force of the spring when falling, so it has higher safety.

[0013] 3. It is used on the offshore wind power expansion platform through the cooperation of the sealing cylinder and the piston, which has better durability. At the same time, the sealing plug on the pull rod will close the avoidance hole in the normal state to prevent the water vapor of seawater from entering the sealing cylinder through the avoidance hole and causing rust inside the sealing cylinder. When the spring is used to damp the safety net, the humidity is high at sea, and the spring is very easy to rust, which affects its performance and cannot effectively ensure the long-term normal use of the anti-fall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of a platform extension anti-falling device in a top view according to the present invention;

[0015] Figure 2 for Figure 1 Sectional view of the middle right view;

[0016] Figure 3 for Figure 2 Schematic diagram of the structure of the middle sealing cylinder. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The reference numerals in the drawings of the specification include: a transverse rod 1, a longitudinal rod 2, a safety net 3, a sealing cylinder 4, an air intake pipe 5, a regulating valve 6, a piston 7, a pull rod 8, a limit plate 9, and a sealing plug 10.

[0019] The embodiment is basically as shown in the attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown:

[0020] A platform extension anti-falling device comprises an anti-falling frame and a plurality of slow-down mechanisms, wherein the anti-falling frame comprises two transverse rods 1 and two longitudinal rods 2, wherein the two transverse rods 1 and the two longitudinal rods 2 are fixedly connected to form a rectangular frame, and a connecting plate is fixedly connected to the bottom ends of the two longitudinal rods 2. The plurality of slow-down mechanisms are evenly spaced and fixedly connected to the lower surface of the rectangular frame, wherein the slow-down mechanisms comprise a vertical sealing cylinder 4, wherein the top of the side wall of each sealing cylinder 4 is fixedly connected to an air intake pipe 5, the air intake pipe 5 is connected to the inside of the sealing cylinder 4, and a regulating valve 6 for adjusting the air intake amount is provided on the air intake pipe 5. The sealing cylinder 4 is fixedly connected to the lower surface of the rectangular frame, with the open end of the sealing cylinder 4 facing downward, and the open end of the sealing cylinder 4 is fixedly connected to a limit plate 9, and an avoidance hole is provided in the middle of the limit plate 9. The piston 7 in the sealing cylinder 4 is connected to the piston 7, and a pull rod 8 is fixedly connected to the piston 7. The bottom end of the pull rod 8 vertically passes through the avoidance hole downward and is located outside the sealing cylinder 4. The bottom ends of the pull rods 8 of multiple slow-down mechanisms are fixedly connected to the same safety net 3, and the safety net 3 is located directly below the rectangular frame. Each pull rod 8 is coaxially fixedly connected with a truncated cone-shaped sealing plug 10, and the sealing plug 10 is used to seal the avoidance hole.

[0021] The specific implementation process is as follows:

[0022] Before use, multiple anti-falling devices are fixedly connected to the side wall at the edge of the expansion platform through the connecting plate, and multiple anti-falling devices are closely adjacent to each other and located on the same plane. When the construction personnel step out of the range of the upper expansion platform, the construction personnel will fall onto the safety net 3. Since the edge of the safety net 3 is fixedly connected to the pull rods 8 of several slow-down mechanisms, after the safety net 3 catches the construction personnel, the safety net 3 falls and pulls multiple pull rods 8 to move downward synchronously. When the pull rods 8 move downward, the piston 7 is pulled downward from the inner top of the sealing cylinder 4. When the piston 7 moves downward, the air pressure above the inside of the sealing cylinder 4 becomes lower and lower, and the air pressure difference between the outside of the sealing cylinder 4 and the inside of the sealing cylinder 4 gradually increases. The pressure difference will push the piston 7 to the original position, and then the speed of the piston 7 moving downward will gradually slow down to achieve the purpose of slow-down. At the same time, when the piston 7 moves downward, the gas molecules in the air have viscosity, so a certain resistance will be formed when the piston 7 moves downward, so the speed of the pull rod 8 moving downward will gradually slow down, and then a buffering effect will also be formed. Before use, the amount of air intake in the air intake pipe 5 and the sealing tube 4 can be adjusted through the regulating valve 6 to adjust the slow descent speed when the pull rod 8 moves downward.

Claims

1. A platform extension anti-fall device, characterized in that: It includes an anti-fall frame and multiple slow-down mechanisms. The anti-fall frame is fixedly connected to a connecting plate, which is used to fix the anti-fall frame laterally at the edge of the expansion platform; multiple slow-down mechanisms are evenly spaced around the edge of the anti-fall frame, and the bottoms of the multiple slow-down mechanisms are connected to the same safety net. The slow-down mechanisms are used to cushion the construction workers by gradually descending when the construction workers fall onto the safety net, thereby reducing the impact force on the construction workers.

2. A platform extension anti-falling device according to claim 1, characterized in that: The slow-descent mechanism includes a vertical sealing cylinder with an open end facing downward. A piston is connected to a piston inside the sealing cylinder, and a pull rod is fixedly connected to the piston. The bottom end of the pull rod vertically passes through the opening downward and is located outside the sealing cylinder. Several pull rods of the slow-descent mechanism are fixedly connected to the edge of the safety net.

3. A platform extension anti-falling device according to claim 2, characterized in that: An air intake pipe is fixedly connected to the top of the side wall of each sealing cylinder. The air intake pipe is communicated with the interior of the sealing cylinder. A regulating valve for adjusting the air intake amount is provided on the air intake pipe.

4. A platform extension anti-falling device according to claim 3, characterized in that: The open end of each sealing cylinder is fixedly connected to a limiting plate, and a avoidance hole for the pull rod to pass through is arranged at the center of the limiting plate.

5. A platform extension anti-falling device according to claim 4, characterized in that: A sealing plug is coaxially fixedly connected to the pull rod, and the sealing plug is used to close the avoidance hole from below the avoidance hole.

6. A platform extension anti-falling device according to claim 5, characterized in that: The anti-fall frame includes two transverse rods and two longitudinal rods, which are fixedly connected to form a rectangular frame. Two connecting plates are provided, and the two connecting plates are respectively fixedly connected to the bottom ends of the two longitudinal rods. A plurality of the slow-descent mechanisms are evenly spaced and fixedly connected to the lower surface of the rectangular frame.

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