JP7039858B2 - Door pressure receiving device - Google Patents

Description

The present invention relates to a pressure receiving device for a door, and more specifically, is provided at the skeleton opening of a structure. It relates to a pressure receiving device for a door that can withstand seismic force.

In recent years, there has been an increase in demand for doors that are installed in the skeleton openings of structures and can withstand the impact force of flying objects such as tornadoes, typhoons, blast waves, and flying objects such as airplanes, as well as wave pressure, water pressure, and seismic force caused by tsunamis. There is. Usually, this type of protective door is very heavy in order to increase the impact resistance, and is also called a heavy door. There are two types of installation of the protective door for the skeleton opening: a rotary type that rotates and opens and closes in a cantilevered state with a hinge, and a horizontal pull type that slides and opens and closes in the direction parallel to the skeleton opening. The skeleton opening is opened by rotating and displacing outward, and the horizontal pull type slides and displaces inside the structure to open the skeleton opening.

In the case of a rotary protective door that opens to the outside, as described in Patent Document 1, the inner peripheral surface of the skeleton opening and the outer peripheral surface of the protective door come into contact with each other when the door is fully closed, and the protective door has a shielding property. It is easy to allow the skeleton to receive the impact force from the outside. However, the rotary protective door that opens and closes the skeleton opening that allows large special vehicles to pass is heavy even if it is a double door, so not only is the hinge mechanism costly, but it also opens and closes manually in an emergency. The work to do is also difficult.

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

By the way, in the case of a horizontal pull type protective door, it is necessary to firmly support the lower end of the protective door in order to receive an impact force from the outside. For that purpose, it is considered to displace the protective door in the direction orthogonal to the slide opening / closing direction by the rail when fully closed so that the lower end of the protective door comes into contact with the pressure receiving portion provided on the floor surface. If it is heavy, it requires a large amount of power and a complicated mechanism, so it cannot be adopted. In addition, a structure that locks by dropping multiple sturdy lock pins into the engagement holes provided on the floor when fully closed is also considered, but the weight of the lock pins becomes heavy and multiple lock pins are manually operated in an emergency. Not only is it complicated, but it is also assumed that the lock pin and the engaging hole will engage with each other due to the impact force from the outside and will not easily come off.

Japanese Patent No. 5753913 Japanese Unexamined Patent Publication No. 2000-075091

Therefore, what the present invention seeks to solve in view of the above-mentioned situation is a door provided so as to be openable and closable by a horizontal pulling type along the inside of the skeleton opening of the structure, such as a tornado, a typhoon, or a flying object caused by a blast. The point is to provide a door pressure receiving device that can withstand the impact force of a flying object such as an airplane, as well as the wave pressure / water pressure caused by a tsunami and the seismic force.

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

(1)
A door that can be opened and closed horizontally along the inside of the skeleton opening of the structure is provided, and only when the door is fully closed, the door-side pressure receiving block provided at the inner lower end of the door is attached to the fixed portion of the threshold. It is a pressure receiving device for the door that comes into contact with the provided fixed side pressure receiving block.
The pair of the door side pressure receiving block and the fixed side pressure receiving block is provided over the entire length along the skeleton opening or provided at a plurality of places along the skeleton opening.
The door-side pressure receiving block is made of metal and is fixed to the lower end of the outer shell plate inside the door so as to project inward.
The fixed side pressure receiving block is made of metal and is fixed so as to project so as to face the door side pressure receiving block.
The door-side pressure-receiving block and the fixed-side pressure-receiving block are each provided with contact surfaces that are in metal contact with each other.
Each of the contact surfaces is configured to have the same inclined surface from the door tip side to the door tail side so that the thickness of the door side pressure receiving block increases and conversely the thickness of the fixed side pressure receiving block decreases. ,
A door pressure receiving device characterized by this.

(2)
A traveling rail is laid on the sill portion of the floor surface, a guide rail is fixed to the lintel portion, drive portions are provided on both sides of the door, and wheels provided at the lower ends of the drive portion are attached to the traveling rail. The door according to (1), wherein the guide roller having a vertical rotation axis provided at the upper end of the main body of the door is rolled and guided by the guide rail so that the door is not displaced in the out-of-plane direction. Pressure receiving device.

(3)
The traveling rail is laid inside a box-shaped pit that is embedded in the threshold portion of the floor surface and is open upward, and the pit is opposed to the door-side pressure receiving block fixed to the lower end portion inside the door. The door pressure receiving device according to (2) , wherein the fixed side pressure receiving block is fixed to the inner surface of the inner side plate of the door.

The door pressure receiving device of 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, a typhoon, or a blast or a flying object such as an airplane, and the wave pressure / water pressure and seismic force caused by a tsunami act on the outer surface of the door, the impact force is not affected. The stress can be received and withstood by the fixed part of the floor surface 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 problem in opening and closing the door. When the door is fully closed, the contact surface consisting of the pressure receiving block on the door side and the inclined surface provided on the fixed side pressure block makes metal contact with each other in a surface contact state, so that the stress acting on the outer surface of the door is dispersed and surely. The door can be opened and closed smoothly.

According to the configuration of (2), a heavy door can be smoothly opened and closed.

According to the configuration of (3), the passage of the vehicle in the threshold portion is not affected, and the pressure receiving strength can be made very high.

It is a front view which shows the relationship between the protective door which concerns on this invention, and the skeleton opening of a building, and is seen from the inside of a building. It is also a cross-sectional plan view. It is also a vertical sectional side view. It is a vertical sectional side view of a driven drive part. Similarly, it is a vertical sectional front view of the driven drive unit. It is a simplified cross-sectional view which shows the interlocking structure of a handle and a latch which constitutes a lock mechanism. It is an enlarged cross-sectional view with a handle attached. It is a partial longitudinal front view which shows a part of a lock mechanism. It is a vertical sectional front view of the electric drive part. Similarly, it is a vertical sectional side view of the electric drive unit. It is a front view which looked at the protective door equipped with a pressure receiving device from the inside of a building. It is a simplified plan view of a pressure receiving device. (A) to (d) are simplified plan views showing the relationship of the pressure receiving device in the process of closing the protective door. 11 is a cross-sectional view taken along the line AA of FIG. 11 is a cross-sectional view taken along the line BB of FIG. 11 is a cross-sectional view taken along the line CC of FIG. 11 is a cross-sectional view taken along the line DD of FIG. It is a partial cross-sectional plan view which shows the mounting structure of the 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 protective door as an example of a door according to the present invention and a peripheral structure of a building skeleton opening as an example of a structure, in which reference numeral 1 is a building, 2 is a skeleton opening, and 3 is protection. A door, 4 is a traveling rail, 5 is a guide rail, 6 is a wheel, and 7 is a guide roller.

A building is typically mentioned as a structure according to the present invention, but it can also be applied to a structure having openings such as a breakwater for tsunami and storm surge, a tide embankment, and a wall of an important facility other than the building. Further, the present invention can be adopted as long as the door for opening and closing the skeleton opening of the structure is also a large door. In the following embodiment, a protective door provided at the opening of the building frame will be described as an example.

The building 1 according to the present embodiment stores, for example, an emergency power supply vehicle arranged in a nuclear power generation facility, and high safety is guaranteed. The skeleton opening 2 of such a building 1 is set to be very wide, for example, 6 m in width and 4 m in height so that the above-mentioned large special vehicle can smoothly enter and exit. The size of the protective door 3 that can fully close the skeleton opening 2 is set to be slightly larger than the skeleton opening 2, and the thickness is set to 50 cm so as to withstand the impact of flying objects caused by tornadoes, typhoons, or blast waves. Has been done.

Here, along the inside of the skeleton opening 2, two traveling rails 4 and 4 are laid on the sill portion of the floor surface F so as not to protrude upward, and a predetermined interval is provided in the depth direction on the sill portion. It is provided and two guide rails 5 and 5 are fixed. Then, drive portions are provided on both sides of the protective door 3, and a pair of wheels 6 and 6 are provided at the lower ends of the drive portions, respectively, to roll on the traveling rails 4 and 4. Further, a plurality of guide rollers 7, ... I try not to displace to. In this embodiment, both end portions are guide rollers 7, 7, and the intermediate portion is a guide block 7A, ....

As shown in FIGS. 1 and 3, the protective door 3 is formed on a box-shaped frame 8 formed by welding steel materials such as an angle material, a U-shaped cross-section material, or a rectangular parallelepiped cross-section material in a grid pattern, and a stainless steel plate or the like. The outer shell plate 9 of the above is fixed to form a rectangular parallelepiped shape, and a reinforcing bar 10 is provided inside with a double reinforcing bar structure, and concrete is cast and hardened. The estimated weight is 46 tons. An electric drive unit 11 is provided at the lower portion of the side surface of the protective door 3 on the door tail 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 portion of the side surface 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 the control panel 13 inside the building 1 and powered by an electric motor described later provided inside the electric drive unit 11. However, it must be assumed that a power outage will occur in an emergency, and in that case, it is necessary to manually open the protective door 3. The opening / closing mechanism of the protective door 3 will be described in detail below.

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

Further, as shown in FIGS. 1, 3 to 6, the protective door 3 has a lock mechanism 19 that locks the movement when the skeleton opening 2 is fully closed and when the skeleton opening 2 is fully opened. Is provided in the driven drive unit 12. In this lock mechanism 19, the lock pin 21 drops and engages with the engagement hole 20 provided on the floor surface F, to be exact, with the engagement hole 20 provided between the traveling rails 4 and 4 in the pit 14. It is a structure. The lock is released by a simple mechanism such as raising the lock pin 21 and pulling it out from the engaging hole 20.

Specifically, the engaging hole 20 is formed in a state of being opened upward in a block 22 fixed to a bottom plate 15 in the pit 14. Further, the lock pin 21 has a rod 23 connected to the upper end thereof, and is vertically penetrated 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 to move up and down. I'm 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 in the upper part of the housing 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 hanging from the lower end of the counterweight 28 is inserted into a vertical guide hole 30 formed in the lower part of the housing of the driven drive unit 12 to guide the counterweight 28 so as to move up and down stably. Here, the total weight on the counterweight 28 side is set to be heavier than that of the fixed pulley 26. Then, since the lock mechanism 19 is usually locked, the rod 23 is pulled down by holding a handle 31 provided at a height that is easy for the operator of the rod 23 to operate, and the lock pin 21 is engaged with the lock pin 21. In the state of being engaged with the hole 20, the engaging portion 32 provided on the side of the rod 23 is locked to the latch 33 provided in the housing to maintain the locked state.

The latch 33 engages when the horizontal rod as the engaging portion 32 is pushed in from above, and when the release rod 34 provided in the horizontal direction is pushed in, the latch 33 is released and the counter weight 28 is released. Due to the weight, the lock pin 21 automatically rises and comes out of the engaging 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, in an emergency, it is necessary to manually open the protective door 3 from the outside of the building 1. 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, the handle 35 is rotated, and the deceleration mechanism of the electric drive unit 11 is used to drive the wheels 6A and 6A. Must be able to rotate. In such an emergency, it is often assumed that all the power supply is lost, and the motor 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 is provided with a one-action door opening system that can automatically unlock the lock mechanism 19 when the handle 35 is attached to the front side of the protective door 3 on the door end side.

The one-action door opening system will be described with reference to FIGS. 5 to 8. A shaft 36 is rotatably supported by bearings 37 and 37 horizontally in the depth direction on the door tip side of the protective door 3. Since concrete is cast inside the protective door 3, the shaft 36 is covered with a cylindrical sheath 38, and one end of the shaft 36 is a mounting hole 39 provided in the outer shell plate 9 on the front side. The other end penetrates the outer shell plate 9 on the back surface, and the sprocket 40 is fixed to the tip thereof. Engagement pins 41, 41 are projected in the radial direction at the end of the shaft 36 facing the mounting hole 39. The handle 35 has a cylindrical portion 42 at the center that receives the end portion of the shaft 36, and the cylindrical portion 42 has a notch portion 43, 43 for engaging the engaging pins 41, 41 at a diameter position. It is provided in. When the handle 35 is rotated while the engaging pin 41 is received, the notch 43 engages with the concave portion in which the engaging pin 41 swells in the circumferential direction and moves in the axial direction. It has a shape that can prevent it from coming off.

Then, in the vicinity of the end of the shaft 36, in the space 44 continuous with the mounting hole 39, the operating member 45 is rotatably provided by the support shaft 46 in the direction orthogonal to the axis of the shaft 36. .. The actuating member 45 has a structure in which an action piece 48 is provided on the opposite side of the pressing piece 47 and the support shaft 46, and the tip end portion of the pressing piece 47 is arranged in the vicinity of the shaft 36 to form the working piece. One end of the sheathed wire 49 is connected to the tip of the 48. Both ends of the sheath 50 of the sheathed wire 49 are fixed in predetermined positions. By externally inserting the cylindrical portion 42 of the handle 35 into the end portion of the shaft 36 and accepting the engaging pins 41, 41 into the notch portions 43, 43, the pressing piece of the operating member 45 is pressed at the tip of the cylindrical portion 42. 47 is pushed inward, the actuating member 45 rotates about the support shaft 46, the working 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 the bracket 52 interlocked with the release rod 34 of the latch 33 via the rod end bearing connecting 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 end side of the protective door 3, and at the same time, the sheathed wire 49 is pulled and the release rod 34 is pulled. The latch 33 is displaced in the disengaging direction, the lock mechanism 19 is released, and the protective door 3 becomes movable. When the release rod 34 is pushed inside the building 1, the rod is engaged with the slit groove 53 provided in the bracket 52 and the pin 54 provided sideways at the tip of the release rod 34. The end bearing connecting rod 51 is designed so as not to be displaced.

Next, the drive mechanism of the protective door 3 will be described with reference to FIGS. 9 and 10. In the electric drive unit 11, the electric motor 55 attached to the housing and the input shaft 57 of the speed reducer 56 are interlocked with the pulleys 58 and 59 by the V-belt 60, and are fixed to the output shaft 61 of the speed reducer 56. The sprocket 62 and the sprocket 64 fixed to the drive shafts 63 of the drive wheels 6A and 6A are interlocked with each other by the 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.

The first shaft 66 and the second shaft 67 for manually rotationally driving the drive wheels 6A and 6A are provided with a plurality of bearings 69 at predetermined height positions of the housing of the electric drive unit 11 via the clutch mechanism 68. , ... is provided so that it can rotate in the depth direction. The pulley 70 provided at the end of the first shaft 66 and the dual pulley 59 provided on the input shaft 57 of the speed reducer 56 are interlocked with the V-belt 71, and the end of the second shaft 67. That is, the sprocket 72 provided at the end located inside the building 1 and the sprocket 40 provided on the shaft 36 on the opposite side are arranged by a long chain 73 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 disengaged, 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 supply 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 attached to the shaft 36 from the front side of the protective door 3 on the door end side and the handle 35 is rotated, the rotational force thereof is the sprocket 40, the chain 73, the sprocket 72, and the 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 engagement 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 inside 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, the 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, 11 to 18. The pressure receiving device 75 is provided with a door-side pressure receiving block 76 provided at the 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. It is in contact with the fixed side pressure receiving block 77. That is, by bringing the metal door-side pressure receiving block 76 and the metal fixed-side pressure receiving block 77 into metal contact, the inward stress acting on the outside of the protective door 3 is applied through both blocks 76 and 77. It is received on 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 side plate 16 inside the pit 14 provided on the threshold 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 inside the protective door 3. It is fixed to the lower end of the outer shell plate 9 with the lower end flush with each other. 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 the upper end flush with each other. A slope 78 is formed from the upper end of the side plate 16 inside the pit 14 to the inside of the building 1, a drainage groove 79 is formed inside the slope 78, and rainwater or the like collected in the pit 14 passes through the drain 80 to the drainage groove 79. It is designed to drain water.

It is preferable that the pair of the door-side pressure-receiving block 76 and the fixed-side pressure-receiving block 77 is provided over the entire length along the skeleton opening 2 in terms of dispersing stress from the outside. In the present embodiment, the 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 skeleton opening 2, for example, a total of four locations so as to disperse and receive stress. .. The outer shell plate 9 inside the protective door 3 and the side plate 16 inside the pit 14 are always parallel to each other, that is, a constant distance is maintained regardless of the position of the protective door 3. Therefore, the total thickness of the door-side pressure receiving block 76 and the fixed-side pressure-receiving block 77 of each pair 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 the protective door 3 from coming into contact with another 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 tip side to the door tail side, and conversely, the thickness of the fixed-side pressure receiving block 77 decreases. Is set to. It is preferable that each contact surface 81 of the door-side pressure receiving block 76, ... Is formed of the same plane, that is, a part of the same inclined surface, but the width of the contact surface 81 is sufficiently narrower than 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 side pressure receiving block 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 larger 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 the chamfered portion 83. Further, since manufacturing errors and installation errors of each member are unavoidable, corrections are made in millimeters on site 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, the 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, and the reinforcing block is fixed. An inward facing anchor 86 is fixed to 85, and the anchor 86 is integrated with the concrete by placing concrete. Then, the door side pressure receiving block 76 is tightened to the reinforcing block 85 by using bolts 87 and 87 at a position which is above the door side pressure receiving block 76 and does not interfere with the fixed side pressure receiving block 77.

1 building, 2 skeleton opening,
3 protective doors, 4 running rails,
5 guide rails, 6 wheels,
6A drive wheel, 6B driven wheel,
7 guide roller, 7A guide block,
8 box-shaped frame, 9 outer shell plate,
10 Reinforcing bars, 11 Electric drive unit,
12 Driven drive unit, 13 Control panel,
14 pits, 15 bottom plate,
16 side plates, 17 cross beams,
18 bracket, 19 lock mechanism,
20 engagement holes, 21 lock pins,
22 blocks, 23 rods,
24 bearings, 25 guide holes,
26 fixed pulley, 27 wire,
28 counterweight, 29 guide rod,
30 guide holes, 31 handles,
32 engaging part, 33 latch,
34 release rod, 35 handle,
36 shafts, 37 bearings,
38 sheath, 39 mounting holes,
40 sprockets, 41 engagement pins,
42 Cylindrical part, 43 Notch part,
44 Space, 45 Acting member,
46 Support shaft, 47 Press piece,
48 action 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 1st shaft, 67 2nd shaft,
68 clutch mechanism, 69 bearings,
70 pulley, 71 V belt,
72 sprockets, 73 chains,
74 cover, 75 pressure receiving device,
76 Door side pressure receiving block, 77 Fixed side pressure receiving block,
78 slopes, 79 drains,
80 drain, 81 contact surface,
83 chamfer, 84 liner,
85 reinforcement block, 86 anchor,
87 volts.

Claims (3)

A door that can be opened and closed horizontally along the inside of the skeleton opening of the structure is provided, and only when the door is fully closed, the door-side pressure receiving block provided at the inner lower end of the door is attached to the fixed portion of the threshold. It is a pressure receiving device for the door that comes into contact with the provided fixed side pressure receiving block.
The pair of the door side pressure receiving block and the fixed side pressure receiving block is provided over the entire length along the skeleton opening or provided at a plurality of places along the skeleton opening.
The door-side pressure receiving block is made of metal and is fixed to the lower end of the outer shell plate inside the door so as to project inward.
The fixed side pressure receiving block is made of metal and is fixed so as to project so as to face the door side pressure receiving block.
The door-side pressure-receiving block and the fixed-side pressure-receiving block are each provided with contact surfaces that are in metal contact with each other.
Each of the contact surfaces is configured to have the same inclined surface from the door tip side to the door tail side so that the thickness of the door side pressure receiving block increases and conversely the thickness of the fixed side pressure receiving block decreases. ,
A door pressure receiving device characterized by this. A traveling rail is laid on the sill portion of the floor surface, a guide rail is fixed to the lintel portion, drive portions are provided on both sides of the door, and wheels provided at the lower ends of the drive portion are attached to the traveling rail. The door according to claim 1, wherein the door is rolled upward and a guide roller having a vertical rotation axis provided at the upper end of the main body of the door is rolled and guided by the guide rail so that the door is not displaced in the out-of-plane direction. Pressure receiving device. The traveling rail is laid inside a box-shaped pit that is open upward and is embedded in the threshold portion of the floor surface, and the pit is opposed to the door-side pressure receiving block fixed to the lower end portion inside the door. The door pressure receiving device according to claim 2 , wherein the fixed side pressure receiving block is fixed to the inner surface of the inner side plate of the door.

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