JP2004232451A - Ladder device for evacuation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ladder device for evacuation which is improved in usability by enabling direct transfer from an opening for evacuation like a window, etc., to a ladder. <P>SOLUTION: The ladder device for evacuation is fixed to one side of the opening 4 for evacuation formed in a building wall surface 1, and is held along the building wall surface 1. When the ladder device is in use, ladder bars 3, which are connected to vertically long ladder-supporting rods 2 at predetermined regular intervals, face the building wall surface 1 leaving a predetermined distance from the wall surface 1 to enable transfer from the opening 4 to the bars 3. Each ladder bars 3 is structured to have a length that faces at least more than a half of an area of the opening 4, when in use. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to an evacuation ladder device.

  As an evacuation ladder device that is deployed and used at the time of evacuation, for example, a device described in Patent Literature 1 is known.

  In this conventional example, the ladder device is configured to include a folding main ladder connected and fixed to a wall surface and a folding auxiliary ladder connected to the folding main ladder. At the time of evacuation, the folding main ladder can be extended in a direction orthogonal to the wall surface, and can be evacuated along the main ladder.

Further, Patent Literature 2 discloses an evacuation ladder device having a structure that covers a front surface of a window or the like serving as an evacuation opening.
Japanese Utility Model Publication No. 51-11579 Japanese Utility Model Publication No. 44-17273

  However, the first conventional example described above has the following disadvantages. First, the main ladder used by the evacuees is arranged in a perpendicular orientation to the wall, so when moving on the main ladder, lean out of the evacuation opening and turn your body 90 degrees. Need to rotate. This rotation of the body needs to be performed at a high place when evacuating, so it is fearful and hinders rapid evacuation.

  In this regard, in the above-described first conventional example, the evacuees can descend along the folding auxiliary ladder facing the wall surface during expansion, but in the first conventional example, the evacuees descend along the main ladder. The above problem is still not solved because of the assumption of evacuation. That is, in the first conventional example, when the width of the main ladder is secured to the extent that evacuation is easy, the distance between the auxiliary ladder and the wall surface increases, making it easier to evacuate using the main ladder. Easy transfer to the auxiliary ladder is a contradictory condition. As a result, if priority is given to ease of evacuation using the original main ladder, taking into account that the auxiliary ladder is narrower than the width of the main ladder, once you have switched to the main ladder, Needs to be rotated 90 degrees.

  Next, in the first conventional example, the lower end of the main ladder comes into contact with the ground in a state where the ladder device is extended, and the load of the evacuee descending along the ladder is a ground contact portion with the ground, And the connection between the ladder and the wall along the longitudinal direction. On the other hand, for example, in a multi-story building, the structure of the wall surface and the like are various, and in many cases, it is not always possible to expect a stress load on the wall surface along a long ladder. As a result, a problem of lack of versatility arises.

  In addition, the main ladder and the auxiliary ladder are unstable at the upper end, and the lower edge and the side edge of the planar main ladder are merely fixed, so that they are unstable and fearful for evacuees. There is a problem to make.

  In the second conventional example, it is possible to move directly to the ladder from an evacuation opening such as a window, but in the unused storage state, the structure covers the front surface of the window or the like which becomes the evacuation opening. In addition, it becomes an obstacle in using the windows, and the entire ladder is exposed on the wall surface of the building even in the housed state.

  The present invention has been made in order to solve the above-mentioned drawbacks, and an object of the present invention is to provide an evacuation ladder device having improved usability by enabling a user to directly transfer to a ladder from an evacuation opening such as a window. .

According to the invention, the object is
A ladder that is fixed to one side of an evacuation opening 4 formed in the building wall surface 1 and can be accommodated along the building wall surface 1, and is connected to a longitudinally long ladder support rod 2 at a predetermined pitch in a use state. An evacuation ladder device that allows the crossbar 3 to face the building wall 1 at a predetermined interval from the building wall 1 and allows transfer to the ladder bar 3 from the evacuation opening 4,
The ladder bar 3 is achieved by providing an evacuation ladder device having a length dimension capable of directly facing at least a half or more of the evacuation opening 4 in a use state.

  The evacuation ladder device is constituted by connecting a ladder beam 3 at a predetermined pitch to a longitudinally long ladder support rod 2, and in a use state of the evacuation ladder device, the ladder beam 3 is separated from the building wall 1 by a predetermined distance. The evacuee is provided with a hand or a footrest during descent by taking a horizontal posture on a distant plane.

  As shown in FIG. 3 (a), the distance (d) between the development plane of the ladder bar 3 and the building wall 1 is set directly from the evacuation opening 4 such as a window opened on the building wall 1 to the ladder bar 3. If it is set to such an extent that it can be easily transferred, and if it is set so that the back is pressed against the building wall 1 with the ladder bar 3 held and the legs are put on the ladder bar 3, the space is simply set. You can get a sense of security compared to descending along a ladder that is erected on a hill.

  Further, the length of the ladder bar 3 is formed so as to be able to directly face at least a half or more of the evacuation opening 4 in a use state. The ladder bar 3 is formed to have a length sufficient for the evacuees to descend and can easily transfer from the center of the evacuation opening 4 by facing the evacuation opening 4 over at least half of the area. It is possible to reduce the fear of evacuees when transferring.

  By the way, the above-mentioned first conventional example also has a problem in that a load is burdened when an evacuee descends along a ladder. In other words, the load received by the main ladder connected to the wall is originally supported by the wall, but the strength of the wall deteriorates over time, so it was planned at the beginning of the main ladder installation It is difficult to always keep the load burden on the wall. On the other hand, for example, the strength of the wall of a multi-story building where the main ladder is fixed is measured at any time, and if the strength is reduced, the wall is reinforced along multiple floors along the longitudinal direction of the main ladder. Since it is not practical to do so, the load that exceeds the load imposed by the wall in an actual use state is supported by the ground on which the lower end of the main ladder contacts.

  However, the ground on which the lower end of the main ladder abuts in use is not easily understood to be a part constituting the evacuation ladder device while the main ladder is folded and stored, for example, in a downtown area with many mixed buildings. It is not always possible to expect a sufficient load due to illegal parking or leaving garbage. Therefore, the first conventional example has a problem in that the load burden at the time of evacuation is lacking in reliability.

  The invention described below has been made to solve this problem, and by supporting the load of the ladder portion by a suspension gantry, the reliability of the load burden at the time of evacuation is increased, and the invention is installed in a mixed-use building or the like. It is intended to provide a suitable evacuation ladder device.

According to the present invention, the above object is provided.
A ladder part 7 connected to the ladder support rod 2 and movably formed from the accommodation position to the use position;
This is attained by providing an evacuation ladder device having a suspension base 5 for supporting the load of the ladder portion 7.

  In this invention, the evacuation ladder device supports the load of the ladder part 7 by suspending the ladder part 7 directly or indirectly from the suspension pedestal 5. In this case, since a stiff rod is used in the longitudinal direction of the ladder portion 7, even if the ladder portion 7 is long, the ladder portion 7 does not wobble during evacuation.

  According to the present invention, in which the load of the evacuees descending along the ladder part 7 is borne by the suspension pedestal 5, the load borne during evacuation can be concentratedly borne on the suspension pedestal 5, and the ladder part 7 is mounted on the wall surface. Even in the case where the connection and the sharing of the load on the wall surface cannot be expected so much, the mounting strength of the evacuation ladder device can be reliably ensured only by reinforcing the periphery of the suspension base 5. Moreover, the construction is easier than in the case where the strength of the wall surface extending over many floors is improved.

  It is sufficient that the ladder portion 7 is supported by a load on the suspension cradle 5 and that the load burden during evacuation is substantially ensured by the suspension cradle 5. The lower end of the ladder portion 7 suspended from above may be brought into contact with the ground. Further, there is no problem at all even if the ladder portion 7 is configured to bear all the load on the suspension base 5 without being connected to a wall surface or the like.

  In addition, the evacuation ladder device of the present invention includes a plurality of ladders each having a length of about a length connecting the middle tiers by fixing the suspension gantry 5 to a plurality of locations on the rooftop or wall of the building and suspending the plurality of ladder portions 7. By connecting the part 7, it is also possible to constitute so as to be able to descend from the upper floor to the ground. By setting the lengths of the individual ladder portions 7 to be short as described above, the load borne by the individual suspension cradle 5 can be made relatively small, and the evacuation ladder device can be used for a long time on a high floor. In the case of installation, the reliability of load bearing can be further improved.

  Further, it is desirable to form the ladder portion 7 so as to be movable in order to enhance the storage efficiency. In this case, the ladder portion 7 moves relative to the hanging frame 5 even if the ladder portion 7 moves with the moving of the hanging frame 5. However, the load can be secured by being suspended and held by the suspension base 5 at least at the use position.

  As is clear from the above description, according to the present invention, usability can be improved by making it possible to move directly to the ladder from an evacuation opening such as a window.

  Further, by suspending the ladder portion from the suspension cradle and causing the suspension cradle to bear a load, the reliability of the load bearing during evacuation of the evacuation ladder device can be improved.

  FIG. 1 shows a use state of an evacuation ladder device installed in a three-story building. The building has a window on each floor to which a sliding door serving as an evacuation opening 4 is attached, and a hook receiver 11 is fixed below the evacuation opening 4 on each floor. In this embodiment, the sliding door has a general width (about 180 cm), and the width of the evacuation opening 4 is about 90 cm.

  As shown in the figure, the evacuation ladder device includes a ladder portion 7 in which a plurality of ladder bars 3 are connected to a vertically long ladder support rod 2, a suspension cradle 5 which supports an upper end of the ladder portion 7 in a use state. Is provided.

  The ladder support rod 2 has a length slightly shorter than the height of the building, and is made by, for example, extruding an aluminum material. One ends of a plurality of connection links 12 are vertically rotatably connected to the ladder support rod 2 at a predetermined pitch. The other end of the connecting link 12 is vertically rotatably connected to a fixed vertical bar 13 fixed to the building wall 1, and as shown in FIG. The rod 2 can be accommodated so as to be superimposed on the fixed vertical rail 13, and as shown in FIG. 4 (b), the ladder support rod 2 is moved from the building wall 1 by setting the connecting link 12 in a horizontal position. It can pop out vertically. In FIG. 4A, reference numeral 14a denotes a connecting pin between the connecting link 12 and the ladder support rod 2, and 14b denotes a connecting pin between the connecting link 12 and the fixed vertical rail 13.

  As shown in FIG. 4 (a), the ladder bar 3 of the ladder unit 7 has one end on the ladder support rod 2 and the other end on the movable vertical bar 6 so as to be vertically rotatable around the connecting pins 15a and 15b. Be linked. The ladder bar 3 is rotatable in a plane perpendicular to the rotation plane of the link 12, that is, in a plane parallel to the building wall 1. It is housed so as to overlap on top, and faces directly parallel to the building wall 1 in the horizontal posture. The length between the ladder support bar 2 and the movable vertical bar 6 of the ladder bar 3 used for evacuation in the use state in the horizontal posture is the length directly facing the above-described half or more of the evacuation opening 4, that is, The evacuation opening may be formed to have a length of about 50 cm. However, as shown in FIG. 3B, the evacuation opening is formed so as to face almost the entire surface of the evacuation opening. Also, the ladder bar 3 is located in front of the refugee, and can embark straight from the evacuation opening 4 and transfer to the ladder bar 3 without fear. Hanging hooks 6a, 2a are formed at the upper ends of the movable vertical rail 6 and the ladder support rod 2, respectively.

  On the other hand, as shown in FIGS. 2 and 3, the suspension gantry 5 includes a fixed gantry 17 fixed to the roof of a building, and a movable gantry 18 rotatable vertically with respect to the fixed gantry 17. The movable gantry 18 is a frame-shaped member having a guide opening 19 through which the movable vertical rail 6 and the upper end of the ladder support rod 2 are inserted inside the frame, and is substantially perpendicular to the building wall surface 1 shown in FIG. It is possible to rotate between the projecting use posture and the forwardly inclined posture shown in FIG. The guide opening 19 has a protruding direction guide portion 19a extending vertically from a base end of the connection to the fixed base 17 in a use posture, and a horizontal direction guide portion 19b bent at a right angle from the end of the protruding direction guide portion 19a. It is formed in an L-shape in plan view.

  The movable gantry 18 is maintained in the forwardly inclined posture by an unillustrated stopper that can be released by an unillustrated operation unit disposed near the evacuation opening 4 on each floor. A link 20 is mounted between the movable gantry 18 and the fixed gantry 17 in order to reduce the load burden on the gantry.

  Therefore, in this embodiment, when the evacuation ladder device is not used, as shown in FIG. 4A, the ladder support rod 2 overlaps the fixed vertical rail 13 from the front side of the building wall 1 and furthermore, Thus, the movable vertical bar 6 is overlaid on the ladder support rod 2 from the side. In the posture accommodated along the building wall surface 1 in this manner, the evacuation ladder device has a small projecting dimension from the building wall surface 1 and does not become an obstacle. In addition, since the storage position of the evacuation ladder device is one side of a window or the like which becomes the evacuation opening 4, it does not become an obstacle when using the window or the like.

  When a fire or the like occurs in this state, the operation unit is operated from each floor to release the stopper. First, as shown in FIG. 5B, the movable platform 18 of the suspension platform 5 is moved to the use posture side. To rotate vertically. As shown in FIG. 6A, the ladder support rod 2 whose movement to the use position side is restricted by the movable base 18 with the rotation of the movable base 18 loses its support and moves to the use position side by its own weight. Moving. The movement of the ladder support rod 2 to the use position involves the rotation of the connection link 12 in the horizontal posture side and the lowering operation of the ladder support rod 2, and when the connection link 12 reaches the horizontal posture, as shown in FIGS. Then, the suspension hook 2a of the ladder support rod 2 is locked to the movable gantry 18, and thereafter, the load on the ladder support rod 2 is borne by the movable gantry 18.

  As described above, when the ladder support rod 2 is moving along the protruding direction guide portion 19a, the movable vertical beam 6 is laterally formed by the side wall surface of the protruding direction guide portion 19a, that is, on the building wall surface 1. On the other hand, since the movement in the parallel direction is restricted, the ladder support rod 2 follows the ladder support rod 2 and moves in the pop-out direction guide portion 19a while almost maintaining the contact state with the ladder support rod 2. The movement restriction to the movable vertical rail 6 is released by the ladder support rod 2 completely moving to the use posture and the movable vertical rail 6 facing the horizontal guide portion 19b as shown in FIG. Thereafter, as shown in FIG. 6B, the movable vertical rail 6 shifts to the use posture while moving laterally in the horizontal guide portion 19b.

  The movable vertical rail 6 is also moved to the use position using the own weight of the movable vertical rail 6, and the ladder bar 3 is in a horizontal posture with the movable vertical rail 6 moved to the use position. The hanging hook 6a is locked to the movable gantry 18, and thereafter, the movable gantry 18 bears the load on the movable vertical rail 6.

  In this state, as shown in FIG. 3B, the ladder bars 3 are arranged at a predetermined pitch from the side of the evacuation opening 4 so as to face almost half of the evacuation opening 4 and open the evacuation opening 4. The displaced evacuee can then transfer to the front ladder bar 3 and descend using the ladder bar 3 with the back facing the building wall 1. As shown in FIG. 3A, the distance (d) between the development plane of the ladder bar 3 and the building wall 1, that is, the protrusion dimension at the rotation position of the movable gantry 18 is set to about 40 to 60 cm. It is easy enough to move directly from the evacuation opening 4 to the ladder bar 3 while holding the ladder bar 3 and placing the legs on the ladder bar 3 so that the back is pressed against the building wall 1. When the evacuee takes a backward tilted posture while holding the ladder bar 3, the user can feel the feeling of being supported by the building wall 1 on the back, so that a sense of security can be obtained. In addition, in the above-described backward tilting posture, even if the grip strength of the ladder bar 3 is weakened, the posture of the body can be maintained. For example, when evacuating from a high floor, take a break on the way. Also becomes possible.

  In addition, when the evacuees are on the ladder bar 3, the load on the ladder bar 3 is borne by the hanging gantry 5 installed on the roof, and the building wall 1 is only supported by the evacuation ladder device when not in use. Can be installed even if the strength of the building wall surface 1 is not high. Further, since the ladder bar 3 is suspended from the suspension base 5 at the upper ends on both sides and one side edge is connected to the building wall 1 via the connection link 12, there is little wobble, and safety during evacuation is reduced. Is improved. The ladder bar 3 and the movable vertical bar 6 are slightly shorter than the height of the building, and the lower end is located above the ground. Therefore, even if a trash can is placed on the ground, the evacuation ladder device is used. Can be developed.

  Furthermore, in consideration of the evacuee's transfer to the connecting link 12 side at an instant, it is prevented that the fear is strengthened, and the connecting link is urged to move to the ladder bar 3 facing the opening 4 for evacuation. The pitch between the ladder bars 3 is larger than the pitch between the ladder bars 3 and the length is shorter than the length of the ladder bars 3.

  Further, in this embodiment, the evacuation ladder device is provided with a steadying member 21. As shown in FIG. 1, the anti-sway member 21 is rotatably connected to the movable vertical rail 6 at the same pitch as the installation pitch of the hook receiver 11. As shown in FIG. 9A, when the evacuation ladder device is not in use, the anti-sway member 21 is housed in the movable vertical rail 6, and in this state, the end of the ladder rail 3 is closed. The rotation operation is regulated by the hook stopper 3a formed in the portion.

  When the evacuation ladder device is deployed to the use position and the ladder bar 3 is rotated to the horizontal position, the hook stopper 3a is retracted from the restricting position of the anti-skid member 21, as shown in FIG. The stop member 21 is rotated to the horizontal position by the bias of the spring 22, and the hook 21 a at the tip is locked to the hook receiver 11. In this state, the movable vertical rail 6 is connected to the building wall 1, and the ladder portion 7 has a U-shape in plan view with both ends connected to the building wall 1 as shown in FIG. Is completely prevented.

  10 to 16 show other embodiments of the evacuation ladder device to which the present invention is applied. Note that, in this embodiment, the same components as those in the above-described embodiment are denoted by the same reference numerals in the drawings, and description thereof will be omitted. In this embodiment, the evacuation ladder device includes a ladder portion 7, an auxiliary ladder portion 23 that is deployed below the ladder portion 7, and a suspension base 5 that supports an upper portion of the ladder portion 7 in a use state. As shown in FIG. 10, it is installed in a four-story building.

  As shown in FIG. 11, the ladder portion 7 adjusts the heights of the upper and lower ends of the ladder support rod 2 when overlapping the fixed vertical bar 13 in the vertical posture of the connecting link 12 with the upper and lower ends of the fixed vertical bar 13, The height of the upper and lower ends of the movable vertical bar 6 when overlapping with the ladder support rod 2 in the vertical position of the ladder bar 3 is adjusted to the upper and lower ends of the ladder support rod 2, and the ladder support rod 2 is accommodated in the accommodation state of the evacuation ladder device. The movable vertical rail 6 and the fixed vertical rail 13 are aligned at the same height. A hanging piece (not shown) is provided above the ladder support rod 2 and the movable vertical rail 6 so as to protrude toward the side of the ladder portion 7 along the building wall surface 1. The ladder part 7 is locked to the locked part 24 of the gantry 5 and is kept suspended from the gantry 5. In the use state of the ladder part 7 shown in FIG. 12, the distance between the lower end of the ladder support rod 2 and the ground is about 2 m.

  As shown in FIGS. 10 to 12, an auxiliary ladder part 23 is attached to the lower part of the ladder part 7 so as to be slidable in the vertical direction. The auxiliary ladder part 23 is formed by connecting both ends of the auxiliary ladder rail 8 at a predetermined pitch between a pair of auxiliary vertical rails 9 and 9 '.

  As shown in FIG. 13, the auxiliary vertical rail 9 is a channel member having a C-shaped cross section formed by rising the front wall 9b and the rear wall 9c from the front and rear edges of the flat plate piece 9a, and is extruded from an aluminum material. And the length of the ladder part 7 is set to 2 m or more, which is larger than the distance between the lower end of the ladder part 7 and the ground in use. The front wall 9b on the side of the ladder portion 7 is provided with a pair of slide pieces 25 each having an L-shaped cross section formed by bending the tip of an upright wall bulging vertically toward the ladder portion 7 at right angles along the building wall surface 1. Then, the bent portion is slidably fitted to a slide rail 26 described later with the bent portion facing both sides.

  The auxiliary vertical rails 9 are arranged in a pair with the C-shaped hollow portions facing each other. Both ends of the auxiliary ladder rail 8 are inserted into each hollow portion, and both ends of the auxiliary ladder rail 8 are connected by connecting pins (not shown). It is connected so that it can rotate vertically. Therefore, when the auxiliary ladder bar 8 is in the vertical position, the pair of auxiliary vertical bars 9 is accommodated so as to overlap with each other, and is expanded along the building wall 1 by being in the horizontal position.

  As shown in FIG. 13, the rotation axes at both ends of the auxiliary ladder bar 8 are arranged on the axis of the rotation axes at both ends of the ladder bar 3, and each auxiliary ladder bar 8 rotates vertically with each ladder bar 3, In the rotation plane near the building wall 1 arranged in parallel with the rotation plane. Therefore, when the ladder bar 3 is in the vertical position, the auxiliary ladder bar 8 is also in the vertical position, and when the ladder support rod 2 and the movable vertical bar 6 are stored, a pair of auxiliary vertical bars 9 is also stored. By setting the horizontal position of 3, the auxiliary ladder beam 8 is also in the horizontal position, facing the building wall 1 in parallel, and the pair of auxiliary ladder beams 8 are also expanded with the expansion of the ladder support rod 2 and the movable vertical rod. I do. Although not shown, the movable vertical rail 6 is provided with a rotation restricting means for restricting the rotation of the auxiliary ladder rail 8 downward from the horizontal posture shown in FIG.

  On the other hand, on the ladder support rod 2 of the ladder part 7 and the building wall 1 side of the movable vertical rail 6, slide rails 26 fitted to the above-mentioned pair of slide pieces 25, 25 are assisted from their lower ends along the longitudinal direction. It is provided over almost the same length as the vertical rail 9. The slide rail 26 has a fitting recess in which the bent portion of the slide piece 25 can be fitted, and the pair of fitting recesses are fitted so that the opening portions face each other and the pair of bent portions are sandwiched from both sides, The auxiliary vertical rail 9 is slidably guided vertically on the building wall 1 side of the ladder part 7.

  At the lower end of the ladder support rod 2, there is provided a deployment adjusting means 27 for regulating the downward movement of one auxiliary vertical rail 9 to adjust the timing of the downward movement of the auxiliary ladder part 23 to the ladder part 7. Can be

  As shown in FIG. 15, the deployment adjusting means 27 has an auxiliary ladder restricting portion 28 fixed to the lower end of the ladder support rod 2 and a rotation lever 29 rotatably connected to the ladder support rod 2. The auxiliary ladder restricting portion 28 is formed by holding the block body 30 so as to be able to advance and retreat in an opening that opens in a direction orthogonal to the building wall surface 1. The block body 30 is urged toward the building wall 1 by the coil spring 31 and protrudes downward from the opening into the auxiliary vertical rail 9. In this state, the upper surface 30 a of the block body 30 is attached to the lower end surface of the auxiliary vertical rail 9. The auxiliary vertical rail 9 is restricted from moving downward. As described above, in order to maintain the horizontal position of the auxiliary ladder beam 8 by the rotation restricting means of the movable vertical beam 6, the auxiliary ladder beam 8 is controlled by moving only one auxiliary ladder beam 8 on the building wall 1 side. The movement of the ladder part 23 can be restricted.

  In addition, a guide groove 34 that penetrates the upper surface of the auxiliary ladder regulating portion 28 along the opening is provided above the opening that accommodates the block body 30. The above-mentioned block body 30 is formed with a locking pin receiving recess 30 for receiving a locking pin 32 urged upward by a coil spring 33, and the locking pin 32 in the locking pin receiving recess 30 is It protrudes from the guide groove 34 formed above the opening to the upper surface side of the auxiliary ladder restricting portion 28, and slides in the guide groove 34 in accordance with movement into the opening of the block body 30. The guide groove 34 has a terminal edge formed on the building wall 1 side, and the locking pin 32 abuts on the terminal edge of the guide groove 34 to restrict the movement of the locking pin 32 to the building wall 1 side. As a result, the subsequent movement of the block body 30 to the building wall surface 1 side is prohibited.

  As shown in FIGS. 15 and 16, the rotation lever 29 is disposed above the auxiliary ladder restricting portion 28, and is connected to the ladder support rod 2 by a connection pin 35 so as to be vertically rotatable in substantially the same rotation plane as the ladder bar 3. Is done. At the upper end, which is the rotation tip of the rotary lever 29, an operating part 29a for rotating the rotary lever 29 clockwise by contacting the lower surface of the ladder bar 3 when the ladder bar 3 rotates from the vertical position to the horizontal position. Is formed. As shown in FIG. 15A, an inclined surface 29b that contacts the side wall of the locking pin 32 is formed at the lower end of the rotating lever 29 near the auxiliary ladder restricting portion 28. When the rotating lever 29 rotates clockwise from the posture in FIG. 15B, the inclined surface 29b rotates around the connecting pin 35 of the rotating lever 29 and moves in the direction A in FIG. The block body 30 is moved in the direction B (toward the auxiliary vertical rail 9) against the urging force of the block 31.

  Therefore, when the movable vertical bar 6 moves in the direction parallel to the building wall 1 after the ladder support rod 2 moves to the use position, the ladder bar 3 rotates from the vertical position to the horizontal position as shown in FIG. The rotating lever 29 pressed against the operating portion 29 a rotates along the ladder bar 3, and the inclined surface 29 b abutting on the locking pin 32 protruding from the block body 30 is moved to the coil spring 31 for urging the block body 30. The locking pin 32 is moved in a direction away from the building wall surface 1 in opposition, whereby the block body 30 is moved in a direction away from the building wall surface 1. At this time, the block body 30 is separated from the lower end of the auxiliary vertical rail 9.

  The auxiliary vertical rail 9 on the side of the ladder support rod 2, which is no longer supported from below by the movement of the block body 30, can move downward by its own weight, and its movement is restricted via the auxiliary ladder rail 8 by the rotation restricting means. The auxiliary ladder beam 8 and the auxiliary vertical beam 9 on the movable vertical beam 6 side are lowered by their own weight until the lower end abuts on the ground while maintaining the horizontal posture of the auxiliary ladder beam 8. A buffer member (not shown) is provided at the lower end of the auxiliary vertical rail 9 to reduce the impact due to collision with the ground.

  Therefore, in this state, the auxiliary ladder part 23 is deployed between the lower end of the ladder part 7 and the ground, and the evacuees descending along the ladder part 7 transfer to the auxiliary ladder part 23 at the lower end of the ladder part 7. , It is possible to descend to the ground along the auxiliary ladder part 23. Since the auxiliary ladder 23 descends and deploys due to its own weight, for example, if there is an obstacle such as a trash can or a car on the ground, it extends to that part. In this case, the evacuee may descend on the auxiliary ladder part 23 and then descend to the ground by appropriate means. In addition, the auxiliary ladder part 23 starts the deployment by moving the block body 30 along with the movement of the ladder bar 3 to the horizontal position where the deployment of the ladder part 7 is completed as described above. It does not deploy further, and does not impede deployment of the ladder 7 by colliding with, for example, an obstacle such as a car on the ground.

  On the other hand, in this embodiment, the suspension gantry 5 for suspending the ladder portion 7 is fixed to the building wall surface 1. As shown in FIG. 14, the suspension base 5 is formed by connecting a pair of frames so as to be vertically rotatable, and one of the frames is attached to a plate-shaped base 36 attached to the building wall surface 1 by anchor bolts (not shown). By fixing, the other frame is fixed to the building wall 1 so as to be vertically rotatable. The frame body is formed by extending a pair of legs in the orthogonal direction from the front and rear ends of the straight rod portion to form a U-shape in a plan view, and bending a pipe having a circular cross section made by rolling stainless steel. Can be done.

  As shown in FIG. 14, the fixed side frame 37 fixed to the base 36 has the legs 37b, 37b directed downward from the horizontal rod 37a in the horizontal position along the building wall 1, and the leg 37b is connected to the base 37b. 36, it is fixed to the building wall 1. The leg 37b of the fixed frame 37 is rotatably connected to the leg 38b of the movable frame 38, and is also linked by the link 20. On the movable side frame 38 leg 38 b, a connecting tool 41 having the locked part 24, which winds the outer periphery of the leg 38 b and protrudes upward in the use posture in FIG. Is connected to the mounting piece of the connecting tool 41.

  In addition, the movable frame 38 has a horizontal side 39b that is bent substantially at a right angle from the end of the vertical side 39a, and serves as an inner peripheral wall of the protruding direction guide portion 19a and the horizontal direction guide portion 19b in the use posture of the suspension gantry 5. One end of an L-shaped guide member 39 in plan view is fixed. The other end of the guide member 39 is vertically rotatably connected to the base 36, and the guide member 39 rotates with the rotation of the movable frame 38. Further, a flat frame runner 40 which can be in contact with the front surface of the ladder portion 7 at the use position is provided on the movable side frame body 38 between the legs in parallel with the straight rod portion. Restricting movement to the front side of the building and securing engagement between the hanging piece and the mounting piece.

  Therefore, in the evacuation ladder device in the housed state shown in FIG. 11, when the stopper (not shown) is released and the movable side frame 38 moves to the use position, the ladder support rod 2 that loses support and moves to the use position side is Then, the hanging piece 2a is brought into contact with the frame runner 40 and moved to the use position. In this state, the hanging piece 2a is locked to the locked portion 24 of the movable frame 38. Therefore, the subsequent load on the ladder support rod 2 is borne by the suspension gantry 5.

  The movable vertical rail 6 whose phase shifts to the use position side together with the ladder support rod 2 is restricted in movement by the vertical side 39a of the guide member 39, moves in the protruding direction guide portion 19a, and the front surface abuts on the frame runner 40. Thereafter, the movable side frame 38 moves in the horizontal guide portion 19b formed by the straight rod portion 38a of the movable side frame 38 and the horizontal side 39b of the guide member 39. When the movable vertical rail 6 is moved to the use position, the movable vertical rail 6 comes into contact with the leg of the movable side frame 38, and the hanging piece 6 a is locked to the locked part 24 in this state. Therefore, the subsequent load on the movable vertical bar 6 is borne by the suspension gantry 5.

  Although the case where the ladder portion 7 is suspended by the single suspension frame 5 has been described above, a plurality of suspension frames 5 may be provided as shown in FIG. In this case, the load borne by each suspension base 5 can be reduced, and the reliability of the load borne can be further improved.

1 is an overall perspective view showing an evacuation ladder device to which the present invention is applied. It is a front view in a non-use state. It is a figure which shows a use state, (a) is a side view, (b) is a front view. 2A and 2B, FIG. 3A is a sectional view taken along line 4A-4A in FIG. 2, and FIG. 3B is a sectional view taken along line 4B-4B in FIG. It is a figure which shows the operation | movement of a suspension gantry, (a) is a perspective view which shows the state in which a movable gantry is in an inclination attitude | position, (b) is a figure which shows the state which a movable gantry has rotated to a horizontal position. It is a figure which shows the deployment operation | movement of a ladder part, (a) is a figure which shows the deployment operation | movement of a connection link, (b) is a figure which shows the deployment operation | movement of a ladder crosspiece. It is a figure showing rotation operation of a movable stand. It is a figure which shows the latching operation | movement of the hanging hook to a hanging stand. It is a figure which shows an anti-slip member, (a) is a perspective view which shows an accommodation state, (b) is a perspective view which shows the locking state with a hook receiver. It is a figure which shows the use condition of the evacuation ladder device in other embodiment, (a) is a front view, (b) is a side view. It is a figure which shows a non-use state, (a) is a front view, (b) is a side view. It is a figure which shows the deployment operation | movement of a ladder part, (a) is a front view, (b) is a side view. 11A and 11B are cross-sectional views taken along line 13A-13A of FIG. 11, and FIG. 12B is a cross-sectional view taken along line 13B-13B of FIG. It is a perspective view which shows a hanging stand. It is a figure which shows a deployment adjustment means, (a) is a figure which shows operation | movement of a block body, (b) is a side view of (a). It is a figure showing operation of a rotation lever. It is a figure which shows a modification, (a) is a front view and (b) is a side view.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Building wall 2 Ladder support rod 3 Ladder bar 4 Evacuation opening 5 Suspension stand 6 Movable vertical bar (vertical bar)
7 Ladder part 8 Auxiliary ladder bar 9 Auxiliary vertical bar

Claims (8)

A ladder pier connected to a longitudinally long ladder support rod at a predetermined pitch in use is fixed to one side of the evacuation opening established on the building wall and can be stored along the building wall. An evacuation ladder device that faces the building wall at a predetermined interval from, and allows a transfer from the evacuation opening to a ladder pier,
The evacuation ladder device, wherein the ladder bar has a length dimension capable of directly facing an area at least approximately half of the evacuation opening in a use state. A ladder pier connected to a longitudinally long ladder support rod at a predetermined pitch in use is fixed to one side of the evacuation opening established on the building wall and can be stored along the building wall. An evacuation ladder device that faces the building wall at a predetermined interval from, and allows a transfer from the evacuation opening to a ladder pier,
An evacuation ladder device in which the distance between the ladder bar and the building wall in a use state is such that the back is pressed against the building wall with the evacuee holding the ladder bar slightly extended arms. A ladder pier connected to a longitudinally long ladder support rod at a predetermined pitch in use is fixed to one side of the evacuation opening established on the building wall and can be stored along the building wall. An evacuation ladder device that faces the building wall at a predetermined interval from, and allows a transfer from the evacuation opening to a ladder pier,
An evacuation ladder device including a suspension gantry for suspending and holding the ladder support rod in a use state. Having a vertical bar connecting the free ends of the ladder bar,
The evacuation ladder device according to claim 3, wherein the vertical rail is suspended from the suspension gantry and supported in use. A ladder pier connected to a longitudinally long ladder support rod at a predetermined pitch in use is fixed to one side of the evacuation opening established on the building wall and can be stored along the building wall. An evacuation ladder device that faces the building wall at a predetermined interval from, and allows a transfer from the evacuation opening to a ladder pier,
An evacuation ladder device in which an end of the ladder bar opposite to a portion connected to the ladder support rod is connected to a vertical bar which can be locked to a building wall at an appropriate position. A ladder part connected to the ladder support rod and movably formed from the accommodation position to the use position,
An evacuation ladder device having a suspension base for supporting the load of the ladder portion. The evacuation ladder device according to claim 6, wherein the ladder portion is suspended and held on a suspension base at a use position. In use, it has an auxiliary ladder bar arranged below the ladder bar,
The evacuation ladder device according to any one of claims 1 to 7, wherein the auxiliary ladder beam is connected to an auxiliary vertical beam that moves downward after the movement of the ladder support rod to the use position is completed.

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