JP2533333Y2 - Slowly hoisting device for telescopic evacuation ladder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for slowly lifting a retractable ladder from a veranda or the like in the event of an emergency such as a fire to recover the retractable ladder.

[0002]

2. Description of the Related Art Conventionally, evacuation escape devices incorporating an evacuation ladder are stored in a veranda and in a corridor inside and outside the room.
It is used when evacuating to the floor immediately below in an emergency, but the evacuation ladder installed in the evacuation escape device is a suspended evacuation ladder, and such a suspended evacuation ladder is made of metal An object that is heavier and heavier than the floor directly above it is extended to the floor immediately below in a state close to the no-brake drop, and in a panic situation such as a fire, the evacuees directly below can only descend downstairs how quickly There is no possibility that the evacuation ladder will fall from above, and there will be no danger of secondary disasters caused by falling metal evacuation ladders from the floor directly above. There has been a long-awaited desire for a safer evacuation device in the evacuation escape device.

[0003]

[Problems to be Solved by the Invention] In the present invention, when the lower lid is opened according to the opening of the upper lid of the storage hatch, safety is confirmed by communicating with the downstairs, and the degree of opening of the upper lid is further determined. By adjusting the extension speed of the telescopic evacuation ladder, the telescopic evacuation ladder is stretched while slowly descending, and in the event of a fire or other emergency, the telescopic evacuation ladder is extended to prevent the evacuation ladder from danger to evacuees on the floor directly below. The purpose of the present invention is to provide a retractable hoisting device for a ladder.

[0004]

SUMMARY OF THE INVENTION According to the present invention, in consideration of the problem that the state of the downstairs and safety cannot be confirmed based on the above-mentioned prior art, and the problem that the suspended evacuation ladder falls in the no-brake state, the upper lid and the lower The lid is linked open and closed with the link device to confirm the safety of the downstairs, and the wire rope fastened to the telescopic evacuation ladder is wound around the reel drum, and a band brake device is provided on the reel drum to install the band brake device. The above-mentioned drawbacks have not been solved by adjusting the restraining force of the rotation of the reel drum by adjusting the opening / closing degree of the upper lid so as to extend the evacuation evacuation ladder while slowly descending.

In the slow hoisting apparatus, a wire guide for inserting a wire rope is reciprocated linearly in the width direction of the reel drum in conjunction with the rotation of the reel drum. In order to ensure that the telescopic evacuation ladder can be extended without tangling the wire rope in an emergency, in an emergency.

[0006]

In the present invention, the storage hatch is normally closed by the upper lid and the lower lid, and the bending lever is pressed in the bent state by a brake lever via a spring in a direction for suppressing the rotation of the reel drum. ing.

[0007] When the telescopic evacuation ladder is used in an emergency evacuation such as a fire or the like, the lower lid is opened in conjunction with the link device in response to the opening of the upper lid of the storage hatch, thereby communicating with the downstairs. After confirming safety, the bending rod gradually expands and expands according to the degree of opening of the upper lid, the other end of the bending rod slides, and the brake lever is restrained via a spring by the brake lever to prevent rotation of the reel drum. , The restraining force against the rotation of the reel drum by the band brake device is gradually released, and the wire rope wound on the reel drum is gradually sent out by the weight of the telescopic evacuation ladder. The telescopic evacuation ladder extends while slowly descending to the floor immediately below.

When the evacuation ladder is collected into the storage hatch, the reel drum is rotated by appropriate transmission means and the cylindrical cam is rotated, and the wire guide is moved along the linear rail in the continuous groove according to the rotation. As a result, the wire rope inserted through the wire guide makes a reciprocating linear motion in the width direction of the reel drum, and is sequentially and orderly wound on the reel drum without unevenness.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 denotes a storage hatch provided with an opening at a predetermined position of a veranda 2.
A lower cover 4 and an emergency evacuation device 5 are provided.

The upper lid 3 is pivotally attached to the outer edge 6 above the storage hatch 1 and can be opened and closed so as to cover the upper opening of the storage hatch 1, while the lower lid 4 is connected to the outer edge 6. On the same side, it is pivotally attached to the inner edge 7 below the storage hatch 1 and is openable and closable so as to fit the lower opening of the storage hatch 1. 8, the lower lid 4 is opened and closed in conjunction with the opening and closing of the upper lid 3.

The emergency evacuation device 5 comprises a slow lifting device 9 and a retractable evacuation ladder 10. The slow lifting device 9 is provided on an inner wall 11 (the right side in FIG. 1) of the storage hatch 1 on the inner edge 7 side. Fixed near the corner.

The slow hoisting device 9 has a rotating shaft 13 rotatably mounted on brackets 12 and 12a protruding from an inner wall 11, and a reel drum on which a wire rope 14 is wound.
The reel drum 15 is rotatably provided with the 15 fixed, and the reel drum 15 is provided with a band brake device 16.

A band brake device 16 fixes a brake wheel 17 to one end of the reel drum 15. The brake wheel 17 has a brake band 18 wound around the brake wheel 17.
One end of 18 is fixed to the bracket 12 and the other end is
A fulcrum is fixed to one end of a brake lever 19 which is pivoted.

Incidentally, the band brake device 16 is not limited to the above-described structure, and the brake wheel 17 is fixed to the reel drum 15.
The structure is not limited as long as the brake band 18 is tensioned and relaxed by swinging of the brake lever 19, thereby suppressing the rotation of the reel drum 15.

Reference numeral 20 denotes an opening / closing transmission mechanism for the upper cover 3. The transmission mechanism 20 is a side wall of a box 22 containing a spring 21.
23 is provided with a guide groove 24, and the brake lever is
The other end of 19 is slidably mounted and pivotally connected to one end of a spring 21, while a predetermined portion of the inner surface of
One end of a bent rod 25 composed of two links
The other end of 25 is slidably mounted in the guide groove 24 and is pivotally connected to the other end of the spring 21.

Therefore, as shown in FIG. 3, when the upper lid 3 is closed, the bending rod 25 is bent, and the brake lever 19 is moved via the spring 21 in the direction for suppressing the rotation of the reel drum 15 (the brake band 18 is turned on). In the direction of tension)
When the lid is fully opened from the start of opening, the bending rod 25 gradually expands and extends, and the brake lever 19 is moved to the reel drum via the spring 21.
The upper lid 3 is gradually towed in a direction of releasing the rotation inhibition of the 15 (a direction in which the brake band 18 is relaxed) according to the degree of opening of the upper lid 3.

Reference numeral 26 denotes a stopper provided at the bent portion of the bending rod 25 for stopping the tilting.

Reference numeral 27 denotes a main gear fixed to the rotary shaft 13, a sub gear 28 meshes with the main gear 27, and a handle shaft 29 rotatably mounted on the bracket 12a is fixed to the sub gear 28. Handle on handle shaft 29
30 are provided.

A gear 31 meshes with the sub gear 28, and one end of a cylindrical cam 32 is fixed to the gear 31.

A cylindrical cam 32 is disposed in parallel with the reel drum 15 and is rotatably mounted on the brackets 12, 12a. The right and left spiral continuous grooves 33 (FIGS. 8 to 1) are provided on the surface of the cylindrical cam 32.
0) is engraved, and a wire guide 34 is slidably mounted in the continuous groove 33.

A wire guide 34 is provided with a slider 35 rotatably provided below the continuous groove 33, a guide hole 36 through which the wire rope 14 is inserted is provided at an upper end thereof, and a linear A guide 37 is protruded, and the linear guide 37 is slidably mounted on a linear rail 38 disposed parallel to the cylindrical cam 32.

The evacuation evacuation ladder 10 is provided so as to be slidably fitted with a large number of cylindrical bodies 39, 39a... Steps 40, 40a, ... are protruded on both sides, and the outermost cylindrical body 39 is pivotally attached to a bracket 41 fixed to the center of the inner wall 11 of the storage hatch 1, and this is attached to the uppermost end of the telescopic evacuation ladder 10. On the other hand, the wire rope 14 is tightened to the innermost cylindrical body 39a, which is the lowermost end of the telescopic evacuation ladder 10, and the length of the wire rope 14 is adjusted to the length of the telescopic refuge ladder 10 at the time of extension. I have.

Reference numerals 42, 42a denote wire guides fixed at predetermined positions on the inner wall 11 of the storage hatch 1.

Next, the link device 8 will be described.
As shown in FIGS. 5 and 6, the link device 8 is provided with a crossing guide groove 43 in the longitudinal direction of the inner wall 11a of the storage hatch 1 (the wall surface facing the slow lifting device 9 in FIG. 2). 43
, One end of a lower link 44 is slidably mounted, and the other end of the lower link 44 is pivotally attached to a predetermined portion on the inner surface of the lower cover 4.

A center of a link butterfly 45 is pivotally connected to one end of the lower link 44, one end of an upper link 46 is pivotally connected to one end of the link butterfly 45, and a plate is connected to the other end of the link butterfly 45. A stopper 47 having a rectangular shape is fixed at a right angle, and a predetermined portion on the inner surface of the upper cover 3 is pivotally connected to the other end of the upper link 46.

Also, as shown in FIGS. 11 and 12, one end of an upper link 46 and a lower link 44 is pivotally attached to a short portion of a substantially L-shaped bell crank 48, as shown in FIGS. An appropriate part of the crank 48 is slidably mounted on the guide groove 43 as a fulcrum 49, and a pin-shaped stopper 50 is protruded from a long part of the bell crank 48 to prevent the bell crank 48 from reversing even on a short part. Is provided with a stopper 51.

Next, the operation of the slow lifting device in the telescopic evacuation ladder according to the present invention will be described.
The storage hatch 1 is closed by the upper lid 3 and the lower lid 4, and the retractable evacuation ladder 10 is stored in a contracted state in the storage hatch 1.
25 is bent, and the other end of the bent rod 25 presses the other end of the brake lever 19 via the spring 21 in a direction for suppressing the rotation of the reel drum 15, and the brake band wound around the brake wheel 17.
The rotation of the reel drum 15 is suppressed by tensioning 18.

When the evacuation evacuation ladder 10 is used in an emergency evacuation such as a fire, at the initial stage of operation start, the upper lid 3 of the storage hatch 1 is turned upward by a predetermined amount to open the upper link 46. Link butterfly 45 through 9
It rotates 0 degrees, and at this time the stopper 47 of the link butterfly 45
The lower link 44 supported by is the link butterfly 45
With this rotation, the supporting state is released, and at the same time, the lower lid 4 that has been closed slides along the guide groove 43 and turns downward to open.

Depending on the degree of opening of the upper lid 3, the bent rod 25
Gradually expands and extends, the other end of the bent rod 25 slides in the guide groove 24, and the brake lever is
The other end of the brake lever 19 is gradually pulled in the direction of releasing the rotation of the reel drum 15 so that the brake lever 19 swings, and the brake band 18 fixed to one end of the brake lever 19 gradually moves the brake wheel 17. As a result, the restraining force against the rotation of the reel drum 15 is gradually released, and the telescopic evacuation ladder 10 is released.
Due to its own weight, the wire rope 14 wound around the reel drum 15 is gradually sent out, and the telescopic evacuation ladder 10 extends while slowly descending to the floor immediately below.

When the telescopic evacuation ladder 10 is collected into the storage hatch 1, the upper and lower lids 3 and 4 are fully opened while the telescopic evacuation ladder 10 is fully extended. 18 is in a relaxed state, and the rotation of the reel drum 15 is not suppressed.

In this state, when the handle 30 is rotated in one direction, the reel drum 15 rotates via the handle shaft 29, the sub gear 28, and the main gear 27, and the wire rope
The retractable evacuation ladder 10 contracts from the lowermost end, and when the retractable evacuation ladder 10 is completely retracted, the upper lid 3 is closed.
45 rotates 90 degrees, the lower link 44 is supported by the stopper 47 of the link butterfly 45, and the lower cover 4 is completely closed.
The telescopic evacuation ladder 10 is stored in the storage hatch 1 while being supported on the lower lid 4.

When the wire rope 14 is wound, the cylindrical cam 32 is rotated via the handle shaft 29, the sub gear 28, and the gear 31 with the rotation of the handle 30, and the wire guide 34 is linearly moved according to the rotation. The wire rope 14 that slides in the continuous groove 33 while passing along the line 38, and as a result, the wire rope 14 that passes through the guide hole 36 of the wire guide body 34 makes a reciprocating linear motion in the width direction of the reel drum 15, and sequentially winds it without unevenness. Taken.

The upper cover 3 when the link device 8a is used.
When the upper lid 3 is opened, the bell crank 48 rotates 90 degrees via the upper link 46 when the upper lid 3 is opened, and is thereby supported by the stopper 50 of the bell crank 48. The lower link 44 is released from its supporting state, slides along the guide groove 43, and the lower lid 4 pivots downward to open, and conversely, when the upper lid 3 is closed, the upper lid 3 is closed. When the cover 3 is closed, the bell crank 48 rotates 90 degrees in the reverse operation state, the lower link 44 is supported by the stopper 50 of the bell crank 48, and the lower cover 4 is completely closed.

When comparing and observing the link device 8 and the link device 8a, a plate-shaped stopper 47 is welded to the link butterfly 45 of the link device 8 at a right angle, while a pin crank is attached to the bell crank 48 of the link device 8a. The stopper 50 is welded, and the link device 8 is attached to the upper lid 3 and the lower lid 4.
Alternatively, when attaching the link device 8a, the upper lid 3 and the lower lid 4
When the lid is closed, the optimal position of the stopper 47 or the stopper 50 (supporting the lower link 44) for setting the optimal closing condition of the both lids 3 and 4 is set, and then welding is performed. In order to support the weight of the lower lid 4 and the evacuation ladder 10 to be hung, the ladder 10 must be welded at a right angle with a predetermined strength, while the stopper 50 is provided with a pin hole in the bell crank 48, and the stopper 50 is attached thereto. If welded, it is possible to easily provide the strength capable of supporting the weight of the lower lid 4 and the telescopic evacuation ladder 10 hanging on the lower link 44, so that the link device 8a is easier to position and mount the stopper 50 than the link device 8. Since the strength as described above can be easily provided, the support of the lower link 44 by the bell crank 48 at the time of closing the cover makes the closing state of the lower cover 4 perfect.

[0035]

[Effects of the Invention] In short, the present invention is characterized in that the storage hatch 1 has the upper lid 3 and the lower lid 4 interlocked with the upper lid 3 by the link devices 8, 8a.
Can be opened and closed freely, so that in the event of an emergency evacuation such as a fire, the lower lid 4 is opened in conjunction with the link device 8, 8a in accordance with the opening of the upper lid 3 of the storage hatch 1, thereby opening the lower floor. You can contact them to confirm their safety.

A reel drum 15 is rotatably provided on the storage hatch 1, and a band brake device 16 is mounted on the reel drum 15.
And a brake lever of the band brake device 16 is provided.
One end of a spring 21 is pivotally connected to 19, while the upper lid 3
The other end of the bending rod 25 having one end pivotally connected to the other end is slidably provided and pivotally connected to the other end of the spring 21, and the reel drum 15 is tightly connected to the lowermost end of the telescopic evacuation ladder 10. Since the wire rope 14 is wound, the bent rod 25 gradually expands and extends according to the degree of opening of the upper lid 3, and the other end of the bent rod 25 slides, and the brake lever is
19 is gradually pulled in the direction to release the rotation of the reel drum 15, whereby the restraining force against the rotation of the reel drum 15 by the band brake device 16 is gradually released. The wire rope 14 wound around 15 is gradually sent out, and the evacuation evacuation ladder 10 can be safely extended while moving down and down to the floor directly below. In addition, the extension of the telescopic evacuation ladder 10 is merely one action of opening the upper lid 3, so that the telescopic evacuation ladder 10 required in an emergency can be suitable for simple operation. .

The slow lifting device 9 according to the present invention comprises:
It has a simple configuration as described above, and can be manufactured at low cost.

A cylindrical cam 32 connected to the reel drum 15 by a suitable transmission means is disposed in parallel with the reel drum 15. The cylindrical cam 32 has a right spiral and a left spiral continuous groove 33 on its surface.
A wire guide 34 is slidably mounted in the continuous groove 33, and the wire guide 34 is slidably mounted on a linear rail 38 disposed in parallel with the cylindrical cam 32. Since the wire rope 14 is inserted through the guide body 34, when the retractable evacuation ladder 10 is collected into the storage hatch 1, the reel drum 15 is rotated by a suitable transmission means, and the cylindrical cam 32 is rotated. Reel drum with wire rope 14 passing through body 34
The reciprocating linear movement in the width direction of 15 and the winding of the wire rope 14 onto the reel drum 15 can be successively and evenly wound. Can be done.

In the link device 8a, one ends of an upper link 44 and a lower link 46 pivotally connected to the upper lid 3 and the lower lid 4, respectively, are pivotally connected to a short portion of the bell crank 48. It is mounted slidably with the part as a fulcrum, and a pin-shaped stopper 49 is protruded from the longitudinal part of the bell crank 48. Therefore, when attaching the link device 8a to the upper lid 3 and the lower lid 4, When the lower lid 4 is closed, an optimal mounting position of the stopper 50 that makes the closing of the lids 3 and 4 good is set. Then, a pin hole is provided in the bell crank 48 at this position, and the stopper 50 is attached thereto. If it is attached and welded, the lower lid 4 hanging on the lower link 44 and the strength capable of supporting the weight of the telescopic evacuation ladder 10 can be easily provided, and the support of the lower link 44 by the bell crank 48 when the lid is closed, 4 and the lower lid 4 Also act its own weight, a load of the telescopic evacuation ladder 10 instead of the lower cover 4 is half-opened state, in which entirely like becomes large its practical effect very can lid.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a state of use of an emergency evacuation device using a slow lifting device in a telescopic evacuation ladder according to the present invention.

FIG. 2 is a simplified plan view of the emergency evacuation device using the lifting device in the telescopic evacuation ladder according to the present invention, in which the upper lid and the lower lid are omitted.

FIG. 3 is a partially cutaway side sectional view showing a main part of the slow lifting device of the telescopic evacuation ladder according to the present invention.

FIG. 4 is a partially cutaway front cross-sectional view showing a main part of a slow lifting device of the telescopic evacuation ladder according to the present invention.

FIG. 5 is a diagram showing a state of the link device when the upper lid and the lower lid are closed.

FIG. 6 is a diagram showing a state of the link device when the upper lid and the lower lid are opened.

FIG. 7 is a simplified perspective view showing a mechanism of a reel drum and a cylindrical cam.

FIG. 8 is a front view of a cylindrical cam.

FIG. 9 is a plan view of a cylindrical cam.

FIG. 10 is a rear view of the cylindrical cam.

FIG. 11 is a diagram showing a closed state of an upper lid and a lower lid of another link device.

FIG. 12 is a view showing an open state of an upper lid and a lower lid of another link device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage hatch 3 Upper lid 4 Lower lid 8, 8a Link device 10 Telescopic evacuation ladder 14 Wire rope 15 Reel drum 16 Band brake device 19 Brake lever 21 Spring 25 Bend rod 32 Cylindrical cam 33 Continuous groove 34 Wire guide 38 Linear rail 44 Lower link 46 Upper link 48 Bell crank 49 Support point 50 Stopper

Claims (3)

(57) [Scope of request for utility model registration] An upper lid and a lower lid linked to the upper lid by a link device are pivotally connected to the storage hatch so as to be freely opened and closed, a reel drum is rotatably provided on the storage hatch, and a band brake device is provided on the reel drum. One end of a spring is pivotally connected to a brake lever of the band brake device, and the other end of a bent rod having one end pivotally connected to the upper lid is slidably provided and pivotally connected to the other end of the spring. And a retractable elevating ladder lifting and lowering device, wherein a wire rope tightly wound at the lowermost end of the telescopic evacuation ladder is wound around the reel drum. 2. A cylindrical cam connected to the reel drum by a transmission means as appropriate in parallel with the reel drum. The cylindrical cam has a right spiral and a left spiral continuous groove formed on the surface thereof. A wire guide is slidably mounted, the wire guide is slidably mounted on a linear rail arranged in parallel with the cylindrical cam, and the wire rope is inserted through the wire guide. Claim 1
Slowly hoisting device for telescopic evacuation ladder. 3. The link device according to claim 1, wherein one end of each of an upper link and a lower link pivotally attached to an upper lid and a lower lid is pivotally attached to a short portion of a bell crank, and slidably around an appropriate portion of the bell crank as a fulcrum. 3. The lifting device for a retractable evacuation ladder according to claim 1 or 2, wherein a pin-like stopper is protruded from a longitudinal portion of the bell crank.