JPS597460B2 - Safety device for both lifting and horizontal movement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device for vertical movement and horizontal movement for fall prevention.

Fall prevention safety devices are used for safety when working at heights, such as overhead line work on power transmission towers, construction work on high-rise buildings, and cleaning windows. It is necessary to be able to act quickly in the event of a fall, and to ensure that the shock that occurs at that time does not suddenly affect the body.

Conventional safety devices were mainly for lifting and lowering, and special safety devices were required for horizontal movement.

The present invention improves the above-mentioned drawbacks, and provides a safety device for both vertical movement and horizontal movement for fall prevention, which is equipped with a safety device that can be used for both vertical movement and horizontal movement, and which is capable of safely securing the safety device to the vertical movement guide rail. The purpose of this device is to provide a device in which a brake frame is provided with two opposing braking contact protrusions on the inside that can contact the front and back surfaces of the lifting guide rail by biasing a spring. Normally, the braking frame is pivoted so that the braking contact ridges are in contact with the front and back sides of the guide rail, and the safety device body is provided with a protruding pin for the braking frame, and the protruding pin is retracted. the braking frame is rotated against the spring and the braking frame is locked in a horizontal movement position by the projecting pin. The present invention is characterized in that a large safety device engagement prevention protrusion is constructed from a lifting guide rail fixed at the safety device engagement starting point.

To explain this in detail with reference to the drawings, Fig. 1 is a partially cutaway side view of the safety device of the present invention, Fig. 2 is a front view thereof, and Fig. 3 A and the mouth form a part of the safety device of the present invention. They are a front view and a side view of the brake frame, in which 1 is a lifting guide rail, 2,
3 is the protruding side edge on both sides, 4 is the safety device body, 5, 6, 7
, 8 are engagement rollers installed on the left and right, front and rear of the safety device main body 4, and engage with the guide rail side edges 2 and 3.

9 is an extension on one side of the safety device main body 4; 10 is a protruding pin that is inserted into the extension and can be freely moved in and out;
Therefore, the brake frame 13 always protrudes into the rotation trajectory of the brake frame 13, which will be described later.
Prevents rotation of the brake frame.

12 is the knob of pin 11, and by pulling it,
The protruding pin 10 is retracted, and in this state the brake frame can freely rotate.

The brake frame 13 is rotatably attached to the safety device main body 4 by a shaft 15 at the middle 14 thereof, and a safety rope 1 is attached to the upper part.
6, and two stages of braking contact protrusions 19, 20 and 21 are provided at the lower part of the inner wall on both sides.
, 22 facing each other, and each of the protrusions is formed to be inclined to the frame rotation axis 15.

The above-mentioned inclined protrusion allows the safety device to be moved up and down on the guide rail 1.
It is easy to pull up along the road, and furthermore, in the event of a fall, the brake system of the safety device is activated quickly.

Note that the protrusions 19 and 21, 20 and 22 have gaps a and b, respectively.
They face each other with a gap a between them, but the gap a is wider than the gap b.

Reference numerals 23 and 24 are springs that have one end locked to the safety device main body 4, are wound around the shaft 15, and energize the brake frame 13, and rotate the brake frame 13 in the B-)C direction. Projection 1
The lower ends 19', 21' of 9, 21 are connected to the side edges 2 of the guide rail.
, 3, and the upper ends 20', 22' of the protrusions 20, 22 are brought into contact with the back sides 2', 3' of the side edges 2, 3 of the guide rail.
``, 3'', that is, the brake is applied.

When a worker attaches this safety device to his body via the safety rope 16 and climbs up a high-altitude structure such as a power transmission tower, the safety device engages with the guide rail and is lifted up by the safety rope 16, that is, the safety device As shown in Figure 1, the crawling frame 13 has a spring 23. 24 and hits the protruding pin 10 i
B, and the protrusions 19, 20, 21, 22 do not contact the guide rails and can freely rise or fall.

Next, when climbing a steel tower or the like to a place that requires horizontal movement, for example, a safe place such as a landing of a steel tower, the safety device is not removed from the lifting guide rail 1 and the protruding pin 10 of the braking frame 13 is When the brake frame 13 is rotated by hand in the direction from B to A against the springs 23 and 24 while pulling the knob 12 and retracting the protruding pin 10, the brake frame 13 rotates around the shaft 15 as shown by the dotted line. The state becomes 13' as shown.

Then, the knob 12 is released, the protruding pin 10 is protruded, and the brake frame 13 is held in this state.

In this state, the lower end 26 of the brake frame 13 is located above the guide rail 1 as shown at 26', so no braking occurs.
It can be engaged without braking with a horizontal guide rail having a cross-sectional shape similar to the lifting guide rail 1 shown in Fig. 2, allowing the operator to move horizontally while maintaining safety. be able to.

Next, when the worker moves up and down again from horizontal movement, it is extremely dangerous to accidentally use the safety device that was used without braking during horizontal movement for lifting and lowering without braking, so prevent the misuse. In order to do this, as shown in FIG. 4, protrusions 25 for preventing horizontal movement safety device engagement are provided at the safety device engagement start ends, that is, the upper and lower ends, or the insertion end of the lifting guide rail 1, and the height thereof is Let H1 be its width W.

Then, the width W is set to be larger than the minimum gap between the brake contact protrusions of the brake frame 13, that is, the gap b between 20 and 22, and the height H is set between the lower part 15' of the shaft 15 and the guide rail. The distance shall be lower than the distance between the top surface of

Even if the braking frame of the safety device of the present invention falls down due to the above-mentioned protrusion 25 for preventing engagement of the safety device for horizontal movement and attempts to engage with the lifting guide rail 1 while still in the state for horizontal movement, the lower end of the braking frame collides with the protrusion 25 and the safety device is absolutely unable to engage with the lifting guide rail, so misuse for lifting can be prevented.

After pulling the knob 12 and retracting the pin 10, the brake frame 13 is automatically returned to the positions A to B and from B to C by the force of the springs 23 and 24, and is in the ascending and descending state, that is, the state in which the brake is applied. Engage with the lifting guide rail 1.

By doing so, the safety device main body 4 can go over the horizontal movement safety device engagement prevention protrusion 25 and engage with the lifting guide rail 1.

The safety device for both vertical movement and horizontal movement of the present invention is pivoted on a part of the safety device that engages with the vertical guide rail, and is mounted inside a brake frame that is biased by a spring to rotate in the braking direction.
Two braking contact protrusions that can be contacted on the front and back sides of the guide rail are provided, the braking frame is rotated in the other direction against the urging force, and is locked by a pin provided on the safety device main body. As a result, the safety device is moved horizontally without braking, and since the lifting guide rail is equipped with a protrusion to prevent erroneous safety device engagement at the safety device engagement start end, there is a chance of a fall when the lifting guide is engaged. In this case, since the brake frame is spring loaded, the braking action can be performed quickly, and the protruding pin of the brake frame can easily lock the rotation in the braking direction to make it inactive, so it can be used for horizontal movement. In addition, since a protrusion larger than the minimum spacing between opposing protrusions of the brake frame is provided at the engagement start end of the lifting guide rail, the horizontal movement of the safety device can be carried out quickly and easily. It is possible to completely prevent misuse for elevating and lowering while in the same position.

[Brief explanation of the drawing]

Figures 1 and 2 are a partially cutaway side view and front view of the safety device for both lifting and horizontal movement of the present invention, Figure 3A is a front view and side view of a part of the brake frame, and Figure FIG. 4 is a perspective view of the safety device engagement starting end of the lifting guide rail. 1 is a guide rail for lifting, 2 and 3 are side edges for securing the guide rail, 2' and 3' are its front side, 2" and 3" are its back side,
4 is the safety device body, 5, 6, 7, 8 are the left and right sides of the safety device body,
Front and rear engagement rollers, 10 are protruding pins that can be moved in and out, 1
2 is a knob, 13, 13' is a brake frame, 15 is a rotating shaft, 19
, 20, 21, 22 are two-stage braking contact protrusions, 19',
21' is the lower end of 19.21, 20' and 22' are the protrusions 20
, 22, 23 and 24 are biasing springs wound around the shaft 15, and 25 is a protrusion for preventing misuse in raising and lowering the safety device for horizontal movement.

Claims (1)

[Claims] 1. A brake frame is installed on the inside of the safety device body with two opposing braking contact protrusions that can contact the front and back sides of the lifting guide rail, and the braking contact protrusions of the brake frame are usually It is pivoted so that the strip is in contact with the front and back sides of the guide rail, and the safety device body is provided with a projecting pin for the brake frame, and when the projecting pin is retracted, the brake frame is moved against the spring. a safety device engagement prevention protrusion that is larger than the minimum distance between the safety device and the opposing braking contact protrusion, which is provided with a mechanism for rotating and locking the brake frame in a horizontal movement position of the safety device with the protruding pin; Safety device for both lifting and lowering and horizontal movement, characterized by comprising a lifting guide rail with a child fixed at the starting point of safety device engagement.