KR20130093761A

KR20130093761A - Ladder with drop prevention function

Info

Publication number: KR20130093761A
Application number: KR1020110144537A
Authority: KR
Inventors: 박장호
Original assignee: 현대중공업 주식회사
Priority date: 2011-12-28
Filing date: 2011-12-28
Publication date: 2013-08-23

Abstract

The present invention relates to a ladder having a fall prevention function that is provided with a brake means for providing a braking force when the structure connected to the ladder falls, so as to prevent a fall accident that may occur when an operator moves up and down a ladder. .
In the present invention, the frame is arranged side by side, the scaffold is connected to the frame in a structure arranged in the longitudinal direction between the frame, the wire rope connecting the upper and lower ends of the ladder, and to be movable along the wire rope And a brake means coupled to the brake means, the brake body being movably coupled in a state of wrapping a wire rope, a push rod provided in the brake body and arranged to press the wire rope, and the push rod; A ladder having a fall prevention function, which includes a rotating member connected to a hook of a safety rope and rotatably provided to the brake body in a connected structure, is provided.

Description

Ladder with Drop Prevention Function

The present invention relates to a ladder having a fall prevention function, and more particularly, the brake means is provided to be movable along the ladder to provide a braking force in the fall of the operator by the fall accident that can occur when climbing up and down the ladder To prevent it.

FIG. 1 is a view showing a worker climbing up and down using a ladder used in an applicant's workplace.

As shown in the drawing, the ladder 10 is a tool used to move up and down a high place, and when the structure is roughly viewed, the frame 12 arranged side by side with a space and the structure arranged between the frame 12 It comprises a footrest 14 connected to the frame 12.

Ladder 10 is configured as described above, the operator is going up and down while stepping on the footrest 14 in a state of holding the frame 12 of the ladder 10. For reference, when using the ladder 10 is firmly fixed in advance so as not to fall or tilt.

By the way, when the worker moves up and down the ladder 10, if the frame 12 serving as a handle is missed or slips on the footrest 14, a safety accident that the worker falls from the ladder 10 occurs.

Accordingly, the present invention has been made to solve the conventional problems as described above, an object of the present invention is that the brake means is provided to be movable along the ladder to provide a braking force during the fall of the operator when going up and down the ladder A ladder with a fall prevention function is provided to prevent a fall accident that may occur.

Solution to achieve the above object, the frame is arranged side by side, the scaffold connected to the frame in a structure arranged in the longitudinal direction between the frame, and a wire rope connecting the upper and lower ends of the ladder and And a brake means movably coupled along the wire rope, wherein the brake means is provided inside the brake body and squeezes the wire rope so as to move around the wire rope. A ladder having a fall prevention function is provided to be provided so as to be connected to the push rod, and the structure is connected to the push rod to be rotatable on the brake body and configured to be connected to the hook of the safety rope.

As such, when the ladder having the fall prevention function according to the present invention is used, the brake means provided in the ladder may provide a braking force to prevent a fall accident that may occur when the worker climbs up and down the ladder.

1 is a view showing a worker climbing up and down using a ladder used in the applicant's workplace.
Figure 2 is a view showing a state that the worker is going up and down using a ladder with a fall prevention function according to the present invention.
3A and 3B are cross-sectional views showing the brake means of FIG. 2, FIG. 3A is a view illustrating a state before a brake operation, and FIG. 3B is a view illustrating a brake operation state when a worker falls.
Figure 4 is a perspective view of the main portion showing another example of a ladder having a fall prevention function according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a view showing a state that the worker is going up and down using the ladder having a fall prevention function according to the present invention. 3A and 3B are cross-sectional views illustrating the brake unit of FIG. 2, and FIG. 3A illustrates a state before the brake operation, and FIG. 3B illustrates a state of the brake operation when the operator falls.

As shown in the figure, the ladder 20 with a fall prevention function according to the present invention, the frame 22 arranged side by side and the frame 22 in a structure arranged along the longitudinal direction between the frame 22 And a scaffold 24 connected to it.

In addition, the ladder 10 has a plurality of safety guides 26 bent in a semicircle to be arranged along the longitudinal direction of the ladder 20 for the purpose of preventing the fall of the worker, the worker moves along the scaffold 24 The safety guide stage 26 is arrange | positioned in the state which ensures the space which can be enough. Both ends of the safety guide stand 26 have a structure that is connected to and fixed to each of the two opposite frames 22.

In addition, the tension adjusting device 28 is fixedly coupled between the safety guide stand 26 disposed at the uppermost end of the ladder 20 and the safety guide stand 26 disposed at the lower end thereof, and the tension adjusting device 28 is fixed thereto. The wire rope 30 is connected to the liver. For reference, the tension adjusting device 28 exhibits a function of adjusting the tension force of the wire rope 30, and since a general tension adjusting device is applied as it is, a detailed description thereof will be omitted.

In addition, the wire rope 30 is equipped with a brake means 32 that can provide a fall prevention function.

Specifically, the brake means 32 is formed in the brake body 34 and the brake body 34, as shown in FIGS. 3A and 3B, and a through hole 36 through which the wire rope 30 may pass. ) Is included.

In addition, the brake body 34 is provided with a pusher 38 disposed in a state adjacent to one side of the wire rope passing through the through hole 36, and the pusher 38 has an outside of the brake body 34. It is configured to include a rotating member 40 is drawn out part.

The pivot member 40 is coupled to the brake body 34 through a hinge 42 made of a pin or shaft, and the hook 46 of the safety rope 44 connected to the safety vest of the worker can be connected to one end thereof. The coupling hole 48 is formed so that.

Therefore, when the worker is going up and down using the ladder 20 according to the present invention configured as described above, the worker is coupled to the hook 46 of the safety rope 44 connected to the safety vest brake means 32 After coupling to the ball 48 is to move up and down the ladder (20).

At this time, the brake means 32 is always located below the position of the operator by its own weight and the length of the safety rope 44, and also the wire rope 30 at a certain distance by the length of the safety rope 44 Move along. Accordingly, the brake means 32 does not interfere with the movement of the worker when the worker is going up and down.

In addition, due to the weight of the brake means 32 and the pull by the safety rope 44 when the worker is going up and down, the rotating member 40 is always trying to rotate upwards, and the pusher 38 interlocking with the rotating member 40 is provided. ) Does not press the wire rope 30, thereby making it easy to move the brake means (32).

On the other hand, when the worker falls from the ladder 20, as shown in Figure 3b, the brake body 34 is also lowered along the wire rope 30 by its own weight. At this time, the speed at which the worker falls down is higher than the speed at which the brake body 34 descends, so that the pivot member 40 is turned down while pivoting downward about the hinge 42.

Accordingly, the push rod 38 is brought into close contact with the wire rope 30 by the pivoting of the pivot member 40. Then, the weight of the worker acts as a pressing force of the push rod 38 to press the wire rope 30 to generate a braking force, as a result it is possible to prevent the fall of the worker.

Figure 4 is a perspective view showing the main portion showing another example of a ladder having a fall prevention function according to the present invention. In FIG. 2, a safety guide stand 26 is provided on a ladder 20 that is a combination of both frames 22 and a footrest 24, and a wire in which brake means 32 is coupled to upper and lower safety guide stands 26. Although described as a structure in which the rope 30 is connected, the ladder 50 shown in FIG. 4 has a recess 54 formed in a structure in which the front surface is open to both frames 52, and the recess 54 has a wire. The rope 30 is disposed along the groove 54, and a structure in which both ends of the wire rope 30 are connected to the upper and lower ends of the frame 52 is shown.

The wire rope 30 is coupled to the brake means 32 described above. For reference, the brake means 32 is the same as described above on the basis of FIG.

Although the preferred embodiments of the present invention have been described above, it will be understood that various changes and application may be made by those skilled in the art. Therefore, changes of the embodiments of the present invention will not be able to escape the technical scope of the present invention.

10, 20, 50: ladder 12, 20, 52: frame
14, 24: scaffold 26: safety guide
28: tension adjusting device 30: wire rope
32 brake means 34 brake body
36: through hole 38: push rod
40: rotation member 42: hinge
44: safety rope 46: hook
48: coupling hole 54: groove

Claims

Frames arranged side by side, the scaffold connected to the frame in a structure arranged in the longitudinal direction between the frame, a wire rope connecting the upper and lower ends of the ladder, and the brake is movably coupled along the wire rope Means,
The brake means includes a brake body movably coupled in a state of wrapping a wire rope, a push rod provided inside the brake body so as to press the wire rope, and a structure connected to the push rod and pivoting on the brake body. A ladder having a fall prevention function, which is provided to be possible and includes a rotation member connected to the hook of the safety rope.

The method of claim 1,
Safety guides are disposed between the frames to secure a space for the worker to move along the initiation, and both ends of the safety guides are connected to and fixed to the frames arranged on both sides. One ladder.

The method of claim 1,
The frame is provided with a fall prevention function, characterized in that the groove is formed along the longitudinal direction so that the wire rope can be installed in the receiving state.