JPS6236959Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a telescoping evacuation device, particularly an evacuation device using a telescoping ladder.

Conventionally, as this type of telescopic ladder, there have been proposed folding ladders, rope or chain ladders, telescoping ladders in which a pair of vertical rungs are constructed from a plurality of vertical rung elements that are fitted together so as to be able to slide relative to each other. It has been done. When such a telescoping ladder is used as an evacuation device, it is rapidly lowered and extended in an emergency, so that the telescoping ladder is subjected to shock loads. The impact load due to the weight of such a telescopic ladder itself is very large;
From the viewpoint of safety, it has been difficult to make a telescopic ladder with sufficient strength. In particular, it has been difficult to increase the size of conventional telescoping ladders due to concerns about safety in use and strength.

The purpose of this invention is to provide a telescoping evacuation device that alleviates the impact load due to its own weight during descent and extension, is safe and has sufficient strength, is easy to use, and can be made larger.

With these issues in mind, the telescoping evacuation device of this invention consists of a number of vertical beams that are telescopically connected one after another at appropriate intervals from the wall of the building so as to extend downward from the top of the building. A pair of vertical bars placed at a predetermined interval in the horizontal direction, a horizontal bar connected between the vertical bar elements facing each other in each stage of the vertical bars, and the vertical bars and the wall. A retractable ladder consisting of a steady rest protruding toward the wall from either one of the longitudinal bar elements and the transverse bar at each rung of the vertical bar so as to maintain an appropriate distance between the longitudinal bar elements and the horizontal bar; , at each upper rung of the ladder, a rope guide located on either one of the vertical rung elements or rungs at an appropriate distance from the steady rest, and a braking device located above the ladder; , a wire rope fixed at one end to the bottom of the ladder and at the other end to the braking device, and guided by rope guides arranged at each rung of the ladder, in use, the wire rope When the ladder descends and extends under its own weight, the braking device brakes the ladder via the wire rope, reduces the descending and extending speed of the ladder to a predetermined speed, and reduces the impact load applied to the ladder during the descending and extending. relaxed and in a stretched state in which the wire rope brings its steady rest along its wall;
The structure is such that the ladder can be held.

Hereinafter, preferred specific examples of the telescopic evacuation device according to this invention will be described with reference to the drawings.

1 to 6 show a first specific example 10 of the telescopic evacuation device of this invention installed on the second floor of a building 47.

This telescoping evacuation device 10 is sequentially made relatively slidable and connected telescopically at appropriate intervals from the wall of the building 47 so as to be extended from above to below the building 47. consisting of a large number of vertical bar elements 15, 15; 16, 16...; 21, 21, a pair of vertical bars 14, 14 placed at a predetermined interval in the horizontal direction, and a vertical bar element 15, 15;1
A large number of horizontal bars 22, 23,..., 29 connected between 6, 16;...;21, 21, and the vertical bars 1
4, 14 and the wall, the horizontal bars 23, 24...29 protrude toward the wall from the horizontal bars 23, 24...29 of each step.
A large number of steady rests 31, 32, ..., 3 welded to
A telescopic ladder 11 consisting of 7 and 37, and steady rests 31, 32, ... 37 at each upper rung of the ladder.
Move away from the horizontal bars 22, 23, ...,
Rope guides 44 each fixed to 29
, a braking device 12 disposed at the top of the ladder 11 , one end fixed to the lowest steady rest 37 and the other end fixed to a drum (not shown) of the braking device 12 , and the ladder 11 Wires guided by rope guides 44 placed on the upper level of the
When in use, when the ladder 11 descends and extends under its own weight, the braking device 1
2 brakes the ladder 11 via the wire rope 13, reduces the descending/extending speed of the ladder 11 to a predetermined speed or less, relieves the impact load applied to the ladder 11 during descending/extending, and The ladder 11 is extended while the steady rests 31, 32, . . . , 37 of the ladder 13 are placed along the wall.

The telescopic ladder 11 is connected to the building 4 via the bracket 48.
7, and these longitudinal bars 14, 14 are attached to a plurality of longitudinal bar elements 15, 15; 16, 1 which constitute themselves.
6;...;21, 21 are formed from short tubes, and
Mutually adjacent longitudinal bar elements 15, 15; 16, 1
6;17,17;18,18;...;20,2
0; At 21, 21, the upper longitudinal bar element 15,
15; 16, 16;...; 20, 20 with lower vertical bar elements 16, 16; 17, 17;...; 21, 2
1 are slidably connected. That is, the lower longitudinal bar elements 16, 16; 17, 17;...
...; 21, 21 are connecting rings 38, 38; 39, 39; ...; 43,
43 by upper longitudinal bar elements 15, 15; 16,
16...; Slidingly connected to 20, 20. Each connecting ring 38, 38; 39, 39;...; 4
3 and 43 have a cross-sectional shape in the form of a gourd, as shown in FIG.

The steady rests 31, 32, ..., 37 are made of steel so that the ladder 11 is extended while maintaining an appropriate distance between the vertical bars 14, 14 and the wall of the building 47. It is a rod bent into a U shape.

The rope guide 44 is configured as an eye bolt, and at each rung of the ladder 11, the steady rest 3
1, 32, . . . , 37, protrudes toward the wall and is fixed to the horizontal bars 23, 24, . . . , 29.

The braking device 12 is embodied as a slow-down device, and the slow-down device 12 includes a drum (not shown), a friction brake (not shown) connected to the shaft of the drum via a gear, and other components. It consists of a motor (not shown) connected to the drum shaft via gears, and in particular, the friction brake is controlled by a governor.

This lowering device 12 can be configured with a manual or electric type winch, and of course can also be configured with a brake.

The wire rope 13 is fixed at one end to the drum of the lowering device 12 and at the other end to an eye bolt 44 welded to the lowest crosspiece 29.
The wire rope 13 also has horizontal bars 22, 2
3, ..., 28 eye bolts 44,
When the ladder 11 extends downward, the eye bolts 44
(see Figure 4).

In this way, the wire rope 13 is guided by the eye bolts 44 and is stretched as the ladder 11 is extended.
When the load of an evacuee moving from above to below bends the lower end of the ladder 11 away from the wall, the wire rope 13 resists the bending of the ladder 11 and The ladder 11 is held in an extended state in which warping is prevented and the steady rests 31, 32, . . . , 37 are placed along the wall.
Therefore, for evacuees, their sense of fear will be alleviated accordingly.

Next, we will discuss the case of evacuation from the second floor to the ground using the telescopic evacuation device 10 configured in this way in an emergency.
As shown in the figure, since it is in the stored state, first, the locking device (not shown) is released and the ladder 11 is lowered and extended by its own weight. As the ladder 11 descends and extends,
The wire rope 13 is unwound from the drum, and when the descending/extending speed of the ladder 11 exceeds a predetermined speed, a friction brake is activated by the governor to brake the drum. As such, the descending device 12 operates so that the ladder 11 is connected to the wire rope 13
The descending/extending speed of the device 12 is controlled to be below a predetermined speed via the steadying device 12, and the steady rest 31,
32, . . . , 36 cooperate with each other to smoothly expand.

As a result, the impact load applied to the telescopic ladder 11 during descent and extension is alleviated.

The evacuation device 10 also drives the motor of the lowering device 12 to move the wire rope 13 to the lowering device 12.
The telescoping ladder 11 can be easily wrapped around a drum and pulled up to the state shown in FIG. 1 to prepare for the next use.

5 to 7 show a second specific example 50 of the telescopic evacuation device of this invention installed on the second floor of a building 47, and this telescopic evacuation device 50 is similar to the telescopic evacuation device 10 described above. , the lowering device 12 is modified to have two wire ropes 13. Further, in the figure, components of the evacuation device 50 that correspond to each component of the evacuation device 10 are given the same reference numerals.

A slow descent device 51 included in this evacuation device 50 includes a pair of drums 5 located above each vertical beam 11, 11.
2, 52, a drum shaft 53 connecting the drums 52, 52, a friction brake (not shown) connected to the drum shaft 53 through a gear, and a motor connected to the drum shaft 53 through another gear. (not shown), and its operation is the same as that of the gradual descent device 12.

Further, each wire rope 13, 13 has an upper end fixed to a corresponding drum 52, 52, and a lower end fixed to the lower end of the corresponding longitudinal bar 14, 14, that is, the eye bolt 54 of the lowest longitudinal bar element 21, 21. is fixed.

Furthermore, each wire rope 13, 13 has a longitudinal bar element 15, 15; 16, 1 of each rung of the telescopic ladder 11
6;...;20, the eye fixed to the lower end of 20;
The wire ropes 13, 13 pass through the bolt 54, and are guided so as to be smoothly wound back by the eye bolt 54 as the ladder 11 extends downward.

In this way, in this evacuation device 50 as well, the rope guide includes longitudinal bar elements 15, 15 facing each other at each upper rung of the ladder 11;
16, 16; .

This evacuation device 50 is also similar to the evacuation device 10 described above.
It is operated and expanded and contracted in the same way as in the case of .

Furthermore, these evacuation devices 10 and 50 can be installed extremely easily at appropriate locations in buildings, ships, and the like.

According to this invention, the ladder consists of a large number of vertical rung elements connected in a sequentially expandable and contractable manner so that the ladder extends downward from the top of the building at an appropriate distance from the wall of the building. A pair of vertical bars placed at a predetermined interval in the horizontal direction, a horizontal bar connected between vertical bar elements facing each other in each stage of the vertical bars, and a space between the vertical bars and the wall as appropriate. At each rung of the vertical rung, a steady rest protrudes toward the wall from either the vertical rung element or the horizontal rung, so as to maintain the spacing between the ladder and the rope guide. At each rung of the ladder, wire ropes are placed on one of the rung elements and rungs at appropriate distances from the steady rest, with one end fixed to the bottom of the ladder and the other end to the braking device. When the extendable ladder descends and extends as it is guided by the rope guide, the braking device and the wire rope apply a brake to the descending speed of the ladder, and the ladder is subjected to an impact load due to its own weight. is alleviated, the breakage of the ladder due to the impact load is prevented, the mechanical strength and safety of the ladder itself is guaranteed, and it is also easier to use, and furthermore, it allows for larger size and elongation. The load of the evacuee moving from the top to the bottom of the ladder is
When acting on the ladder to bend the lower end of the ladder away from the wall, the wire rope resists the bending of the ladder, preventing such ladder warping and causing the ladder to become steady. The wire rope is held in an extended state along the wall, which alleviates the fear felt by the evacuees and allows for a safer and faster evacuation. Furthermore, the wire rope is guided by rope guides located at each rung of the ladder so that the wire rope is guided by rope guides located at each rung of the ladder so that the wire rope is
Entanglement of the rope is prevented, troubles caused by the entanglement are prevented, and the descending/extending and hoisting operations of the ladder become smoother, thereby further improving the reliability and practicality of the evacuation device.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the stored state of the first specific example of the telescopic evacuation device of this invention installed in a building;
Fig. 2 is a front view of the telescopic evacuation device shown in Fig. 1 in its lowered and extended state, Fig. 3 is a side view of the telescoping evacuation device shown in Fig. 2, and Fig. 4 is 4-4 in Fig. 3. 5 is a front view showing the second specific example of the telescoping evacuation device of this invention in a lowered and extended state, and FIG. 6 is a side view of the telescoping evacuation device shown in FIG. 5. 7 and 7 are cross-sectional views taken along line 7-7 in FIG. 6. 10, 50... Telescopic evacuation device, 11... Telescopic ladder, 12... Braking device, 13... Wire rope.

Claims (1)

[Claims for Utility Model Registration] A utility model consisting of a large number of vertical beam elements connected in a sequentially expandable manner so as to extend downward from above the building at appropriate intervals from the wall of the building, and in the horizontal direction. A pair of vertical bars placed at a predetermined interval, a horizontal bar connected between vertical bar elements facing each other in each stage of the vertical bars, and an appropriate interval between the vertical bars and the wall. In order to maintain For each rung, a rope guide is arranged on one of the vertical rung elements and the rung at an appropriate distance from the steady rest, a braking device is arranged above the ladder; At the bottom, a wire rope is fixed at its other end to the braking device, and is guided by a rope guide arranged at each rung of the ladder, and when in use, the ladder extends and descends under its own weight. At this time, the braking device brakes the ladder via the wire rope, reduces the descending and extending speed of the ladder to a predetermined speed, relieves the impact load on the ladder during descending and extending, and A telescoping evacuation device in which a rope holds the ladder in an extended position with its steady rest along the wall.