JP6361771B2 - Door pressure receiving device - Google Patents

Description

  The present invention relates to a door pressure receiving device, and more specifically, provided in a housing opening of a structure, tornadoes, typhoons, flying objects such as blasts or impact force of flying objects such as airplanes, wave pressure / water pressure due to tsunami, etc. The present invention relates to a door pressure receiving device capable of withstanding seismic force.

  In recent years, there has been an increasing demand for doors that can withstand the impact force of flying objects such as tornados, typhoons, or blasts, or flying objects such as airplanes, as well as wave pressure, water pressure, and seismic force caused by tsunamis. Yes. Usually, this type of protective door is very heavy in order to increase the impact strength and is also called a heavy door. There are two types of installation of the protective door for the chassis opening: a pivoting system that opens and closes in a cantilevered manner with a hinge, and a horizontal pulling system that slides in and out in a direction parallel to the chassis opening. The housing opening is opened by rotating and moving outward, and the lateral pulling type slides and displaces inside the structure to open the housing opening.

  In the case of a pivoting protective door that opens to the outside, as described in Patent Document 1, the inner peripheral surface of the housing opening and the outer peripheral surface of the protective door come into contact with each other when fully closed, and have shielding properties, It is easy to be able to receive the impact force from the outside with the housing. However, the pivoting type protective door that opens and closes the chassis opening that allows large special vehicles to pass through is heavy even if it is a double door opening method, so the hinge mechanism is not only expensive, but it can be manually opened and closed in an emergency. The work to do is also difficult.

  Therefore, in the case of a large protective door, as described in Patent Document 2, it is advantageous to configure it in a horizontal pulling type. In this case, the protective door is arranged inside the housing opening, and the wheel provided at the lower end of the protective door rolls on the traveling rail laid on the floor along the housing opening, and also in parallel with the housing opening. A guide roller having a vertical rotation shaft provided at the upper end of the protective wall rolls in a guide rail provided along the upper side so that the housing opening can be opened and closed.

  By the way, in the case of a lateral pulling type protective door, in order to receive an impact force from the outside, it is necessary to firmly support the lower end of the protective door. For this purpose, it is considered that when the door is fully closed, the guard door is displaced in a direction perpendicular to the sliding opening / closing direction of the rail so that the lower end of the guard door contacts the pressure receiving part provided on the floor surface. A heavy weight requires a large amount of power and a complicated mechanism, so it cannot be used. In addition, a structure in which a plurality of sturdy lock pins are locked by dropping them into engagement holes provided on the floor surface when fully closed is also considered, but the weight of the lock pin becomes heavy, and multiple lock pins are manually operated in an emergency. This is not only complicated, but it is also assumed that the lock pin and the engagement hole are engaged with each other by the impact force from the outside and cannot be easily removed.

Japanese Patent No. 5753913 JP 2000-075091 A

  Therefore, in view of the above-mentioned situation, the present invention intends to solve the problem of a tornado, a typhoon, a flying object caused by a blast, or a door provided so as to be openable and closable along the inside of the structural body opening. The object is to provide a door pressure receiving device capable of withstanding the impact force of a flying object such as an airplane, wave pressure, water pressure, and seismic force caused by a tsunami.

  In order to solve the above-mentioned problems, the present invention provides a door pressure receiving device configured as follows.

(1)
A door is provided that can be opened and closed along the inside of the opening of the frame of the structure, and the door-side pressure receiving block provided at the lower end on the inside of the door is used as a fixed part of the sill only when the door is fully closed. A door pressure receiving device that is brought into contact with a fixed pressure receiving block provided , wherein a pair of the door pressure receiving block and the fixed pressure receiving block is provided at a plurality of locations along the housing opening, The door pressure receiving device is characterized in that the thickness of the door side pressure receiving block increases toward the side, and conversely, the thickness of the fixed side pressure receiving block decreases .

( 2 )
Each contact surface of the door-side pressure receiving block and the fixed-side pressure receiving block is a door pressure receiving device described in ( 1 ), which is configured by a part of the same inclined surface.

( 3 )
The door pressure receiving block and the stationary pressure receiving block are configured as a rectangular parallelepiped ( 1 ).

  The pressure receiving device for a door according to the present invention as described above has the following effects.

According to the configuration of (1), even if the impact force of a flying object such as a tornado, typhoon, or blast, or a flying object such as an airplane, and the wave pressure / water pressure or seismic force due to a tsunami, Stress can be received and withstood by the fixed part of the floor via the door side pressure receiving block and the fixed side pressure receiving block, and the door side pressure receiving block and the fixed side pressure receiving block are in contact only when the door is fully closed, There is no hindrance to the opening and closing operation of the door, the stress acting on the outer surface of the door can be dispersed and received, and the opening and closing operation of the door is smooth.

According to the configuration of ( 2 ), when the door is fully closed, the contact surfaces of the door-side pressure receiving block and the fixed-side pressure receiving block come into surface contact and can reliably receive a reaction force.

According to the structure of ( 3 ), manufacture of a door side pressure receiving block and a fixed side pressure receiving block is easy.

It is the front view which showed the relationship between the protective door which concerns on this invention, and the housing opening of a building, and was seen from the inside of a building. Similarly, it is a cross-sectional plan view. It is a longitudinal side view similarly. It is a vertical side view in a driven drive part. It is a longitudinal front view in a driven drive part similarly. It is a simplified cross-sectional view showing the interlocking structure of the latch constituting the handle and the lock mechanism. It is an expanded transverse sectional view of the state where a handle was attached. It is a partial vertical front view which shows a part of lock mechanism. It is a vertical front view in an electric drive part. It is the vertical side view in an electric drive part similarly. It is the front view which looked at the protective door provided with the pressure receiving apparatus from the inside of a building. It is a simplified top view of a pressure receiving device. (A)-(d) is a simplified top view which shows the relationship of the pressure receiving apparatus in the closing process of a protective door. It is the sectional view on the AA line of FIG. It is the BB sectional drawing of FIG. It is CC sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is a partial cross-sectional top view which shows the attachment structure of a door side pressure receiving block.

  Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. 1 to 3 show a peripheral structure of a protective door as an example of a door according to the present invention and a building opening of a building as an example of a structure. In FIG. A door, 4 is a running rail, 5 is a guide rail, 6 is a wheel, and 7 is a guide roller.

  A typical example of the structure according to the present invention is a building, but the present invention can also be applied to a structure provided with an opening such as a tsunami, a storm surge breakwater, a tide embankment, or an important facility ridge. Moreover, if the door which opens and closes the housing opening of a structure is also a large door, this invention can be employ | adopted. In the following embodiments, a protective door provided at a building opening of a building will be described as an example.

  The building 1 according to the present embodiment stores, for example, an emergency power supply vehicle disposed in a nuclear power generation facility, and high safety is ensured. The housing opening 2 of the building 1 is set to be very wide, for example, a width of 6 m and a height of 4 m so that the above-mentioned large special vehicle can enter and exit smoothly. The size of the protective door 3 that can fully close the housing opening 2 is set to be slightly larger than that of the housing opening 2, and the thickness is set to 50 cm so that it can withstand the impact of a tornado, a typhoon, or a blast. Has been.

  Here, along the inside of the housing opening 2, two traveling rails 4, 4 are laid on the sill portion of the floor F so as not to protrude upward, and the moss portion has a predetermined interval in the depth direction. The two guide rails 5 and 5 are fixed. And a drive part is provided in the both sides of the said protective door 3, and a pair of wheels 6 and 6 are provided in the lower end of this drive part, respectively, and it rolls on the said travel rails 4 and 4. FIG. Further, a plurality of guide rollers 7,... Having a vertical rotation shaft are provided at the upper end of the main body of the protective door 3, and the guide roller 7 is rolled between the guide rails 5, 5, so that the protective door 3 is in an out-of-plane direction. Is not displaced. In this embodiment, both end portions are guide rollers 7 and 7, and an intermediate portion is a guide block 7A.

  As shown in FIGS. 1 and 3, the protective door 3 is made of a stainless steel plate or the like on a box-shaped frame 8 formed by welding steel materials such as an angle material, a U-shaped cross-section material, or a cross-section-shaped material in a lattice shape. The outer shell plate 9 is fixed to form a rectangular parallelepiped shape, and a rebar 10 is provided in a double bar structure inside, and concrete is cast and hardened. The approximate weight is 46 tons. An electric drive unit 11 is provided at the lower part of the side of the protective door 3 on the door butt side, and drive wheels 6A and 6A are provided at the lower end of the electric drive unit 11. On the other hand, a driven drive unit 12 is provided at the lower side of the protective door 3 on the door end side, and driven wheels 6B and 6B are provided at the lower end of the driven drive unit 12.

  Normally, the protective door 3 is opened and closed by operating a control panel 13 in the building 1 and using an electric motor (described later) provided in the electric drive unit 11 as power. However, it must be assumed that a power failure occurs in an emergency, and in that case, it is necessary to open the protective door 3 manually. Hereinafter, the opening / closing mechanism of the protective door 3 will be described in detail.

  First, as shown in FIG. 3, a box-shaped pit 14 opened upward is embedded in the sill portion of the floor surface F, and the traveling rails 4 and 4 are parallel to each other at a predetermined interval in the pit 14. It is laid. The pit 14 includes a bottom plate 15 and a side plate 16. On the other hand, brackets 18,... Are attached to the cross beam 17 at predetermined intervals in the duck part of the building 1, and the guide rails 5, 5 are fixed to the lower surfaces of the brackets 18,. doing. The guide rollers 7,... Provided at the upper end of the protective door 3 are positioned between the two guide rails 5, 5, and along the traveling rails 4, 4 in a state where displacement in the out-of-plane direction is restricted. Thus, the drive wheels 6A and 6A and the driven wheels 6B and 6B roll to support the protective door 3 so that it can be opened and closed laterally.

  As shown in FIGS. 1 and 3 to 6, the protective door 3 has a lock mechanism 19 that locks movement when the housing opening 2 is fully closed and when the housing opening 2 is fully opened. Is provided in the driven drive unit 12. In this lock mechanism 19, the lock pin 21 is dropped into and engaged with the engagement hole 20 provided in the floor surface F, more precisely, the engagement hole 20 provided between the traveling rails 4 and 4 in the pit 14. Structure. To release the lock, the lock pin 21 is lifted and removed from the engagement hole 20.

  Specifically, the engagement hole 20 is formed in an open state in a block 22 fixed to the bottom plate 15 in the pit 14. The lock pin 21 is connected to a rod 23 at the upper end, and is moved up and down through a guide hole 25 provided in the bearing portion 24 of the driven wheels 6B and 6B provided at the lower end of the driven drive portion 12. I am guiding you. Here, since the total weight of the lock pin 21 and the rod 23 becomes considerably heavy, one end of the wire 27 wound around the fixed pulley 26 provided on the upper part of the casing of the driven drive unit 12 is connected to the upper end of the rod 23. The other end of the wire is connected to the counterweight 28. A guide rod 29 suspended from the lower end of the counterweight 28 is inserted into a vertical guide hole 30 formed in the lower part of the casing of the driven drive unit 12 to guide the guide weight 29 so as to move up and down stably. Here, the total weight on the counterweight 28 side is set so as to be heavier than the fixed pulley 26. Usually, since the lock mechanism 19 is in a locked state, the rod 23 is pulled down with a handle 31 provided at a height at which the operator of the rod 23 can easily operate, and the lock pin 21 is engaged. In the state of being engaged with the hole 20, the engaging portion 32 provided on the side of the rod 23 is engaged with the latch 33 provided in the housing, and the locked state is maintained.

  The latch 33 is engaged when a horizontal bar as the engaging portion 32 is pushed in from above, and when the release bar 34 provided in the horizontal direction is pushed in, the latch 33 is released and the counterweight 28 Due to the weight, the lock pin 21 automatically rises and comes out of the engagement hole 20, and the lock is released. Since the driven drive unit 12 is located inside the building 1, the release rod 34 is also operated from the inside of the building 1.

  However, it is necessary to manually open the protective door 3 from the outside of the building 1 in an emergency. In such a case, a handle 35 for manual operation is attached to the front side of the door end side of the protective door 3, and the drive wheel 6A, 6A is rotated by using the speed reduction mechanism of the electric drive unit 11 by rotating the handle 35. Must be able to rotate. In such an emergency, it is often assumed that the entire power supply has been lost, and it must be driven without relying on the electric motor of the electric drive unit 11. At that time, it is necessary to unlock the lock mechanism 19 from the outside of the building 1. The protective door 3 according to the present invention includes a one-action door opening system that can automatically unlock the lock mechanism 19 when the handle 35 is mounted on the front side of the protective door 3.

  The one-action door opening system will be described with reference to FIGS. A shaft 36 is rotatably supported by bearings 37 and 37 horizontally on the door end side of the protective door 3 in the depth direction. Since concrete is placed inside the protective door 3, the shaft 36 is covered with a cylindrical sheath 38, and one end of the shaft 36 is attached to a mounting hole 39 provided in the outer shell plate 9 on the front side. The other end portion penetrates the outer shell plate 9 on the back surface, and a sprocket 40 is fixed to the tip thereof. Engagement pins 41, 41 project from the end of the shaft 36 facing the mounting hole 39 in the diametrical direction. The handle 35 has a cylindrical portion 42 for receiving the end portion of the shaft 36 at the center, and the cylindrical portion 42 has notches 43 and 43 for engaging the engaging pins 41 and 41 in a diameter position. Provided. When the handle 35 is rotated with the engagement pin 41 received, the cutout portion 43 engages with a recess that swells in the circumferential direction and moves in the axial direction. It has a shape that can prevent it from coming off.

  In the vicinity of the end portion of the shaft 36, the operating member 45 is provided in a space 44 continuous with the mounting hole 39 so as to be rotatable by a support shaft 46 in a direction orthogonal to the axis of the shaft 36. . The actuating member 45 has a structure in which an operating piece 48 is provided on the opposite side with the pressing piece 47 and the support shaft 46 as the center, the tip of the pressing piece 47 is disposed in the vicinity of the shaft 36, and the operating piece One end of a sheathed wire 49 is connected to the tip of 48. Both ends of the sheath 50 of the sheathed wire 49 are fixed at predetermined positions. By pushing the cylindrical portion 42 of the handle 35 into the end portion of the shaft 36 and receiving the engaging pins 41, 41 into the cutout portions 43, 43, the pressing piece of the operating member 45 at the distal end of the cylindrical portion 42. 47 is pushed in the back direction, the operating member 45 rotates about the support shaft 46, the action piece 48 is displaced to the front side, and the sheathed wire 49 is pulled.

  The other end of the sheathed wire 49 is connected to a bracket 52 that interlocks with the release rod 34 of the latch 33 via a rod end bearing connection rod 51 inside the housing of the driven drive unit 12. Therefore, as shown in FIGS. 7 and 8, the handle 35 is attached to the shaft 36 from the front side of the door side of the protective door 3, and at the same time, the sheathed wire 49 is pulled and the release rod 34 is The latch 33 is displaced in the direction to release the engagement, the lock mechanism 19 is unlocked, and the protective door 3 becomes movable. When the release rod 34 is pushed inside the building 1, the rod 52 is engaged with the slit groove 53 provided in the bracket 52 and the pin 54 provided on the tip of the release rod 34. The end bearing connecting rod 51 is not displaced.

  Next, the drive mechanism of the protective door 3 will be described with reference to FIGS. The electric drive unit 11 is fixed to the output shaft 61 of the speed reducer 56, with the electric motor 55 attached to the housing and the input shaft 57 of the speed reducer 56 being linked by pulleys 58 and 59 and the V belt 60. A sprocket 62 and a sprocket 64 fixed to the drive shaft 63 of the drive wheels 6A, 6A are linked by a chain 65. Normally, the rotational force of the electric motor 55 is transmitted to the drive wheels 6A and 6A via the speed reducer 56.

  A first shaft 66 and a second shaft 67 for manually rotating the drive wheels 6A, 6A are provided with a plurality of bearings 69 at a predetermined height position of the casing of the electric drive unit 11 via a clutch mechanism 68. ,... Are provided so as to be rotatable in the depth direction. The pulley 70 provided at the end of the first shaft 66 and the duplex pulley 59 provided on the input shaft 57 of the speed reducer 56 are interlocked by a V-belt 71 and the end of the second shaft 67. That is, a long chain 73 in which a sprocket 72 provided at an end located inside the building 1 and a sprocket 40 provided on the opposite shaft 36 are arranged along the indoor side of the protective door 3. It is linked.

  When the electric motor 55 can be driven by a power source, the clutch mechanism 68 is disconnected, the first shaft 66 and the second shaft 67 are disconnected, and the second shaft 67 is not rotated by the electric motor 55. On the other hand, when the power is lost in an emergency, the clutch mechanism 68 is linked, and the first shaft 66 and the second shaft 67 rotate together. Therefore, when the handle 35 is mounted on the shaft 36 from the front side of the door end side of the protective door 3 and the handle 35 is rotated, the rotational force thereof is sprocket 40, chain 73, sprocket 72, second shaft 67. The first shaft 66, the pulley 70, the V-belt 71, and the pulley 59 of the speed reducer 56 are transmitted to the input shaft 57, and the drive wheels 6A and 6A are rotationally driven. The chain 73 corresponding to the indoor side of the protective door 3 is covered with a cover 74 extending in the horizontal direction.

  Further, the end portion of the second shaft 67 has the same structure as the end portion of the shaft 36, that is, the engaging pins 41 and 41 are provided at the end portion of the second shaft 67, and the building 1 It is possible for an operator who has entered the interior of the door to attach the handle 35 to the end of the second shaft 67 and rotate the handle 35 to move it from the indoor side of the protective door 3.

  Next, a pressure receiving device 75 that receives an impact force from the outside when the protective door 3 is fully closed will be described with reference to FIGS. 1, 3, and 11 to 18. The pressure receiving device 75 is provided with a door side pressure receiving block 76 provided at an inner lower end portion of the protective door 3 only when the protective door 3 is fully closed at a fixed portion such as the pit 14 to which the traveling rail 4 is attached. The stationary side pressure receiving block 77 is brought into contact with the stationary side pressure receiving block 77. That is, when the metal door-side pressure receiving block 76 and the metal fixed-side pressure receiving block 77 are brought into metal contact, the inward stress acting on the outside of the protective door 3 is passed through both the blocks 76 and 77. It is received at the floor F. The door side pressure receiving block 76 and the fixed side pressure receiving block 77 are made of stainless steel. In the upper part of the protective door 3, the guide rollers 7 and 7 and the guide blocks 7A and 7A located between the guide rails 5 and 5 receive inward stress acting on the outside of the protective door 3. .

  More specifically, the inner side plate 16 of the pit 14 provided in the sill portion of the floor surface F is set slightly higher than the lower end of the protective door 3, and the door-side pressure receiving block 76 is arranged on the inner side of the protective door 3. The outer shell plate 9 is fixed to the lower end portion of the outer shell plate 9 with the lower end being flush. On the other hand, the fixed side pressure receiving block 77 is fixed to the inner surface of the side plate 16 inside the pit 14, that is, the surface facing the outside of the building 1 with its upper end being flush. A slope 78 is formed from the upper end of the side plate 16 on the inner side of the pit 14 to the inside of the building 1, and a drainage groove 79 is formed on the inside thereof. Rainwater or the like accumulated in the pit 14 is drained through the drain 80. It is designed to be drained.

The pair of the door-side pressure receiving block 76 and the fixed-side pressure receiving block 77 is preferably provided over the entire length along the housing opening 2 in terms of dispersing stress from the outside. In the present embodiment, a pair of the door side pressure receiving block 76 and the fixed side pressure receiving block 77 is provided at a plurality of locations along the housing opening 2 , for example, a total of 4 locations, so that the stress is distributed and received. . The outer shell plate 9 on the inner side of the protective door 3 and the side plate 16 on the inner side of the pit 14 are always parallel, that is, a constant interval is maintained regardless of the position of the protective door 3. Accordingly, the total thickness of each pair of the door-side pressure receiving block 76 and the fixed-side pressure receiving block 77 is constant. When the protective door 3 moves from the fully closed state to the opening direction, the door side pressure receiving block 76 moves, but it is necessary to prevent it from coming into contact with the other fixed side pressure receiving block 77. Therefore, as shown in FIGS. 12 to 17, the thickness of the door-side pressure receiving block 76 increases from the door end side to the door bottom side, and conversely, the thickness of the fixed-side pressure receiving block 77 decreases. It is set as follows. The contact surfaces 81 of the door-side pressure receiving blocks 76 are preferably formed of the same plane, that is, a part of the same inclined surface, but the width of the contact surface 81 is sufficiently narrow compared to the width of the protective door 3. Therefore, the door side pressure receiving block 76 may be a rectangular parallelepiped. Similarly, it is preferable that each contact surface 82 of the fixed pressure receiving blocks 77,... Is formed of the same plane, that is, a part of the same inclined surface, but the width of the contact surface 82 is smaller than the width of the protective door 3. Since it is sufficiently narrow, the fixed side pressure receiving block 77 may also be a rectangular parallelepiped.

  The contact surface 81 of the door-side pressure receiving block 76 and the contact surface 82 of the fixed-side pressure receiving block 77 are chamfered at both ends so that the corners of the block do not collide when fully closed. FIG. 18 shows a chamfer 83. In addition, since manufacturing errors and installation errors of each member are unavoidable, the metal contact is corrected on the spot using a metal liner 84 to realize metal contact when fully closed. Further, in order to increase the mounting strength of the door side pressure receiving block 76, a reinforcing block 85 is welded and fixed to the back side of the outer shell plate 9 corresponding to the position where the door side pressure receiving block 76 is attached. An anchor 86 facing inward is fixed to 85, and the anchor 86 is integrated with the concrete by placing concrete. Then, it is fastened to the reinforcing block 85 using bolts 87, 87 at a position above the door side pressure receiving block 76 and not interfering with the fixed side pressure receiving block 77.

1 building, 2 frame opening,
3 Protective doors, 4 Travel rails,
5 guide rails, 6 wheels,
6A driving wheel, 6B driven wheel,
7 guide roller, 7A guide block,
8 box frame, 9 shell plate,
10 rebars, 11 electric drive parts,
12 driven drive unit, 13 control panel,
14 pits, 15 bottom plate,
16 side plate, 17 cross beam,
18 bracket, 19 lock mechanism,
20 engagement hole, 21 lock pin,
22 blocks, 23 rods,
24 bearings, 25 guide holes,
26 fixed pulleys, 27 wires,
28 counterweight, 29 guide rod,
30 guide holes, 31 handles,
32 engaging portion, 33 latch,
34 Release rod, 35 Handle,
36 shafts, 37 bearings,
38 sheath, 39 mounting hole,
40 sprockets, 41 engaging pins,
42 cylindrical part, 43 notch part,
44 spaces, 45 actuating members,
46 spindles, 47 pressing pieces,
48 working pieces, 49 wires,
50 sheath, 51 rod end bearing connecting rod,
52 bracket, 53 slit groove,
54 pins, 55 electric motor,
56 reducer, 57 input shaft,
58 pulley, 59 pulley,
60 V belt, 61 output shaft,
62 sprocket, 63 drive shaft,
64 sprockets, 65 chains,
66 first shaft, 67 second shaft,
68 clutch mechanism, 69 bearing,
70 pulley, 71 V belt,
72 sprocket, 73 chain,
74 cover, 75 pressure receiving device,
76 Door side pressure receiving block, 77 Fixed side pressure receiving block,
78 slope, 79 drainage ditch,
80 drain, 81 contact surface,
83 Chamfer, 84 Liner,
85 Reinforcement block, 86 Anchor,
87 volts.

Claims (3)

A door is provided that can be opened and closed along the inside of the opening of the frame of the structure, and the door-side pressure receiving block provided at the lower end on the inside of the door is used as a fixed part of the sill only when the door is fully closed. A door pressure receiving device that is brought into contact with a fixed pressure receiving block provided , wherein a pair of the door pressure receiving block and the fixed pressure receiving block is provided at a plurality of locations along the housing opening, The door pressure receiving device is characterized in that the thickness of the door side pressure receiving block increases toward the side, and conversely, the thickness of the fixed side pressure receiving block decreases . The respective contact surfaces of the door-side pressure receiving block and the fixed pressure receiving block, the same inclined surface door receiving apparatus part comprising constituted by claim 1, wherein the. Fixed-side receiving block and the door-side pressure-receiving block, door receiving device configured comprising claim 1, wherein a rectangular parallelepiped.

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