JP2003182810A - Opening and closing device for opening part of door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening and closing device for opening part of a door capable of preventing a temperature change in a warehouse by preventing inflow and outflow of air to and from the warehouse by closing a cutout part positioned below the door in the closed state of the door without working the door and furthermore without requiring a motive power source. <P>SOLUTION: A shielding plate 23 is arranged on an opening surface formed between the door and a floor surface 21, and the cutout part 24 for passing of a cable reel provided on a carriage 21 is provided on the shielding plate 23. A cross-section roughly L shaped opening and closing plate 32 made of a closed part 33, a tongue piece 34 and a pin 35 for axial supporting is arranged on the cutout part 24 free to rotate. A fixed pressing and contact piece 51 to press and contact the closed part 33 of the opening and closing plate 32 at the time of entering the warehouse and a movable pressing and contact piece 53 to press and contact the tongue piece 34 at the time of getting out of the warehouse are provided on the side of the carriage 12. When the closed part 33 is laid down, the tongue piece 34 erects, and an opening part 43 between them becomes a space for passing of the cable reel. The cutout part 24 of the shielding plate 23 is closed and the inflow and the outflow of the air to and from the inside of the warehouse are prevented by erecting the shielding part 33 by laying down the tongue piece 34. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing device for closing an opening surface formed below an automatic door of a warehouse when the automatic door is closed.

[0002]

2. Description of the Related Art FIG. 9 is a schematic diagram showing a simplified construction of an automated warehouse, for example, minus 35 ° C. and minus 20.
Automatic warehouse for refrigerating refrigerators for ℃ class cold storage, or 4
It shows an automatic warehouse for keeping heat at 0 ° C and 60 ° C. This automatic warehouse 1 is covered with a wall material 2 made of a heat insulating panel, and a cargo rack ridge 4 composed of a plurality of shelves 3 is arranged inside. In FIG. 9, for the sake of convenience, two storage rack buildings 4
Are arranged so as to face each other, and a rail 6 for allowing the stacker crane 5 to travel freely is laid between the two luggage rack buildings 4. The stacker crane 5 is adapted to carry in and carry out a load on the shelf 3.

A loading / unloading station 7 is provided in the vicinity of the automated warehouse 1 for loading and unloading cargo between the outside and the automated warehouse 1, and loading and unloading of cargo in the automated warehouse 1 is performed. A dolly station 10 is provided. A pair of rails 1 is provided between the trolley station 10 and the entry / exit.
1 is laid, and a self-propelled (electric) trolley 12 is movably arranged on the rail 11. The trolley 12 moves between the trolley station 10 and the loading / unloading station 7. Load and unload cargo.

An entrance / exit 13 is provided in a part of the wall material 2 of the automatic warehouse 1 in order to move back and forth between the carts 12 mentioned above.
An automatic door 14 that opens and closes at the doorway 13
Is provided. This door 14 is opened when passing through the entrance / exit 13 of the carriage 12, and air is flown in after passing through the carriage 12.
Door 1 to prevent spillage and maintain temperature in automated warehouse 1
4 is closed.

FIG. 10 is a side view of the dolly 12. The dolly 12 for carrying an object 15 has a built-in motor 16 for traveling because it is self-propelled. Electric power is supplied to 16 via a cable 17. A cable reel 20 is provided on the side surface of the carriage 12, and a cable 17 is wound around the cable reel 20. In addition, as shown in FIGS. 10 and 11,
The rail 11 is laid on the floor surface 21, and this rail 1
1, the wheels 22 provided on the lower surface of the dolly 12 are mounted, and the wheels 22 are driven by the motor 16 to drive the cable reel 2
While unwinding the cable 17 from 0 and laying it on the floor 21,
Alternatively, the bogie 12 moves forward and backward while winding the cable 17. The electric power from the cable 17 is also supplied to a sensor and a control device (both not shown) for positioning the carriage 12.

As shown in FIG. 9, the rail 11 on which the carriage 12 runs is laid so as to pass through the entrance / exit 13 outside and inside the automatic warehouse 1. Therefore, the lower part of the door 14 that closes the entrance / exit 13 is As shown in FIG. 11, the size is up to the upper surface of the rail 11. Since the door 14 is only up to the top surface of the rail 11, the lower part of the door 14 is open,
A shield plate 23 is provided on the floor surface 21 to prevent the inflow and outflow of air in this portion. However, dolly 1
Cable reel 20
A cutout portion 24 is formed in the shield plate 23 as a space for escape of the cable reel 20 in order to pass through together. In addition, the notch 24 is formed, or the rail 11 is
In order to penetrate the plurality of shield plates 23a-2
The shield plate 23 is formed from 3d.

When the cart 12 is passed through the entrance / exit 13, since the cutout portion 24 is formed in the shield plate 23,
Although the cable reel 20 can pass through smoothly, when the door 14 is closed after passing the truck 12, the cable reel 20 is opened by the size of the cutout portion 24, and inflow and outflow of air occurs through the cutout portion 24. There is a problem that the temperature changes in the automated warehouse 1.

[0008]

Therefore, as shown in FIG. 12, the shield plate 2 having a size substantially the same as the size of the cutout 24 is provided.
It is conceivable to integrally form the lower portion 5 of the door 14 and to close the notch 24 with the shielding plate 25 to prevent the inflow and outflow of air.

As another example, as shown by the chain double-dashed line in FIG. 12, the notch 2 is formed above or above the entrance / exit 13.
A shield plate 26 having substantially the same size as that of No. 4 is electrically driven so as to be movable up and down, and after closing the door 14 as shown in FIG. 11, the shield plate 26 is hung down to the notch 24, and the shield plate 26 is suspended. 26
It is conceivable to prevent the inflow and outflow of air by means of the shield plate 26. When the truck 12 passes, the shield plate 26 is moved upward in conjunction with the opening and closing of the door 14.

However, the notch 2 near the floor 21
The above-mentioned conventional example for closing 4 has the following problems. That is, in the method of providing the shielding plate 25 on the lower portion of the door 14, it is necessary to separately attach the shielding plate 25 to the door 14, and particularly when the door 14 is a commercially available product, the mounting process becomes complicated. Further, as shown in FIG. 12, the height H ₀ of the opening of the door 14 is increased by the height H ₁ of the shielding plate 25, the opening area is increased, and the inflow and outflow of air is increased. Further, in the method of closing the notch 24 with the electric shield plate 26 that is interlocked with the door 14, a power source such as electricity is required, and moreover, the shield plate 2
There is a problem that the device for moving the 6 up and down is complicated and the cost becomes high. Furthermore, until the door 14 is opened and closed, not only the doorway 13 itself but also the entire cutout 24 is open. Especially, in the case of a refrigerating warehouse, air drifts on the floor surface 21 and the air from the cutout 24 is removed. There is also a problem that inflow and outflow occur, which hinders temperature maintenance in the automated warehouse 1.

The present invention has been made in view of the above-mentioned problems, and is a cutout portion located below the door when the door is closed without machining the door and without requiring a power source. It is intended to provide a notch opening / closing device for a warehouse door, which is intended to prevent the inflow and outflow of air into the warehouse and prevent the temperature change in the warehouse by closing.

[0012]

According to another aspect of the present invention, there is provided an opening / closing device for a door portion, wherein an opening surface formed between a lower end of a door provided at an entrance / exit of a carrier and a floor surface is provided. In an opening / closing device for opening / closing a door portion, an opening / closing member having a substantially L-shaped cross section for opening / closing the opening surface is rotatably arranged on the floor surface side, and the opening / closing member is provided when passing through an entrance / exit of the vehicle. The transport vehicle is provided with an opening / closing drive device for rotating and driving the door and closing the opening surface with the opening / closing member after passing through the doorway.

With such a construction, the opening surface below the door can be closed by the opening / closing member after passing through the entrance / exit of the transport vehicle, and the opening / closing member is arranged on the floor side. As described above, it is not necessary to separately attach a closing member to the door, the shape of the door can be simplified, and, for example, a commercially available door can be easily used. Further, since the opening / closing member is rotatably driven by the opening / closing drive device provided on the side of the transport vehicle to close the opening surface, a separate power source or control device is not required, and cost increase can be suppressed. In addition, for example, when applying this device to a warehouse for keeping heat and cold,
Since the opening / closing member closes the opening surface below the door, it is possible to prevent the inflow and outflow of air and improve the efficiency of heat retention and cold insulation in the refrigerator.

According to another aspect of the present invention, there is provided a door opening / closing device for opening and closing a door, wherein a rail for traveling the transport vehicle is pierced through an opening surface below the door, and the rail is orthogonal to the rail. A shield plate having a notch portion for passing a cable reel disposed in a transport vehicle is disposed on the opening surface while passing through, and the opening / closing member is a closing portion that closes the notch portion of the shield plate, The opening / closing drive device is inserted into the inside of the door, which is composed of tongue pieces provided from both ends of the closing portion and an opening for passing the cable reel through the space between the tongue pieces. A first pressing piece that presses the closing part of the opening / closing member to collapse the closing part, and a second pressing piece that presses the tongue of the opening / closing member to collapse the tongue piece when going outside the door. It is characterized in that it is configured with the pressing piece of.

With such a structure, when the door enters the inside of the door, the first pressing piece of the opening / closing drive device pushes down the closing portion of the opening / closing member to erect the tongue piece so that the space between the tongue pieces is increased. The cable reel of the transport vehicle can be passed through the opening of the. Therefore, when the transport vehicle is inside, both tongue pieces stand up and block both sides of the cutout portion of the shielding plate, so that the opening area of the cutout portion can be reduced and the inflow and outflow of air into the inside can be reduced. Can be prevented even a little.
In addition, when the transport vehicle goes out of the door, the second pressing piece of the opening / closing drive device pushes down the tongue piece of the opening / closing member to raise the closed portion, and thereby the closed portion is raised. The cutout portion of the shield plate can be closed. Therefore, the cutout portion of the shield plate can be surely closed by the closing portion of the opening / closing member, and the inflow and outflow of air into the inside can be surely prevented.

According to another aspect of the present invention, there is provided an opening / closing device for opening / closing a door portion, wherein the position of the first pressing piece of the opening / closing drive device is arranged corresponding to the position of the opening of the opening / closing member, and the second opening / closing device is arranged. The position of the pressing piece is arranged corresponding to the position of the tongue piece, and the second pressing piece is rotatably provided in the direction opposite to the side of the transport vehicle. As a result, even if the closing portion of the opening / closing member falls down and the tongue piece stands up for some reason, the first pressing piece of the opening / closing drive device passes through the opening portion without colliding with the tongue piece, and Even if the second pressing piece comes into contact with the tongue piece, the second pressing piece rotates so that the second pushing piece can easily get over the tongue piece and the transport vehicle can travel smoothly.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 shows a front view of a doorway 13 and a dolly 12 of an automated warehouse 1, and FIG. 2 shows a doorway 1
The side view of 3 and the trolley | bogie 12 is shown. Further, FIG. 3 shows an exploded perspective view of a main part of the shield plate 23 and the carriage 12.

1 to 3, a plurality of angles 30 having a substantially L-shaped cross section are fixed on the floor surface 21 of the entrance / exit 13 by bolts 31, and the side surfaces of the angles 30 are the same as those in the conventional case. Shielding plates 23a-23d are arranged. The shield plate 23a to 23d is used as the shield plate 23.
And the shield plate 2 between the shield plates 23a and 23b.
The rail 11 is laid between 3c and 23d so as to penetrate therethrough. A cutout portion 24 is formed between the shield plates 23b and 23c as a space for passing the cable reel 20 arranged on the carriage 12, but the cutout portion 24 is shown in FIG. 3 for easy understanding. The width of is drawn large.

An opening / closing plate 32 for opening and closing the opening surface of the notch 24 is rotatably arranged in the notch 24, and the opening / closing plate 32 is formed in a substantially L shape by bending. The closing portion 33 that closes the entire notch portion 24, and the tongue pieces 34 that respectively project from the ends on both sides of the closing portion 33.
The opening / closing plate 32 is configured by the pins 35 fixed between the both sides of the closing portion 33 and the base of each tongue piece 34.

A quadrangular shaft support 37 having a hole 36 at the end portion of the side surface of the shield plate 23c constituting the shield plate 23.
The pin 35 of the opening / closing plate 32 is inserted into the hole 36 of the shaft support portion 37 so that the pin 35 is rotatably supported by the shaft support portion 37. Further, a quadrangular shaft support portion 41 having a hole 40 is also formed on the side surface of the shield plate 23b.
2, the other pin 35 of the opening / closing plate 32 is rotatably inserted into the hole 36 of the shaft support portion 41. The shaft support 41 may be adjusted and arranged on the shield plate 23b without the spacer 42.

In this way, the opening / closing plate 32 is rotatably arranged via the pins 35 by the shaft support portions 37, 41 on both sides of the shielding plate 23. In the state shown in FIGS.
The second closed portion 33 is in an upright state, and the upright closed portion 33 completely closes the notch 24. Further, when the opening / closing plate 32 is rotated and the tongue pieces 34 are erected, the opening 43 between the tongue pieces 34 on both sides serves as an escape space for passing the cable reel 20.

Since the positions of the shaft support portions 37, 41 into which the pin 35 serving as the shaft of the opening / closing plate 32 is inserted are higher than the floor surface 21, the closing portion 33 of the opening / closing plate 32 or the tongue piece 34. Does not stand vertically and the upper end of the closing part 33 is the floor surface 2
When it falls to 1, a gap is created between the closed portion 33 and the cutout portion 24, so that inflow and outflow of air occurs. Therefore, as shown in FIG. 2, a stopper 44 is provided on the floor surface 21 so that when the tongue piece 34 or the closing portion 33 falls down, the closing portion 33 or the tongue piece 34 stands upright. Therefore, when the tongue piece 34 falls on the upper surface of the stopper 44, the closing portion 33 stands vertically and closes the cutout portion 24.
Prevents inflow and outflow of air.

On the other hand, the opening / closing plate 32 is provided on the side surface of the carriage 12.
An opening / closing device 50 for driving to open and close is provided.
This opening / closing device 50 is a metal-made substantially L-shaped fixed pressing piece 51 fixed directly to the side surface of the carriage 12 by bolting or the like,
The fixed pressing piece 51 is composed of a movable pressing piece 53 made of metal, which is attached to the side surface of the fixed pressing piece 51 via a butterfly plate 52. One piece of the butterfly plate 52 is bolted to the fixed pressing piece 51, and the movable pressing piece 53 is fixed to the other piece of the butterfly plate 52 by bolting or the like. In the state shown in FIG. 2, the movable pressing piece 53 is restricted from rotating on the side of the carriage 12 and is rotatable leftward in the drawing (clockwise direction).

Further, the position of the fixed pressing piece 51 of the opening / closing device 50 is a position where it comes into contact with the closing portion 33 of the opening / closing plate 32,
It is a position corresponding to the opening 43 between the tongue pieces 34. The position of the movable pressing piece 53 corresponds to the position of the tongue piece 34. In FIG. 1, 45 is a bolt for fixing the rail 11.

Next, the operation of the opening / closing plate 32 and the opening / closing device 50 will be described. First, with the door 14 closed,
The closing portion 33 of the opening / closing plate 32 is erected, and the closing portion 3
At 3, the notch 24 of the shielding plate 23 is closed to prevent the inflow and outflow of air and prevent the temperature change in the automated warehouse 1. Then, as shown in FIG.
When the truck 12 is loaded with a load and the truck 12 travels on the rail 11 and automatically stops in front of the door 14, the door 14 is opened. After the door 14 is opened, the truck 12 enters the automatic warehouse 1. At this time, as shown in FIG. 2, the cable reel 20 rotates as the carriage 12 travels, and the cable 17 is laid on the floor surface 21 while being unwound.

When the carriage 12 passes through the doorway 13, as shown in FIGS. 2 and 4A, the fixed pressing piece 51 of the opening / closing device 50 provided at the rear portion of the carriage 12 causes the opening / closing plate 32 to move. Approaching the closed portion 33 of. When the carriage 12 further travels, the fixed pressing piece 51 comes into contact with the closing portion 33 and pushes it down (see FIG. 4B). Further, the fixed pressing piece 51 pushes the closing portion 33, so that As shown in (c), the closing portion 33 is tilted down, and the opening / closing plate 32 rotates 90 degrees about the pin 35 as an axis. At this time, the closing portion 33 of the opening / closing plate 32
Falls on the upper surface of the stopper 44 provided on the floor surface 21.

In this state, as shown in FIG. 5, the tongue piece 34
Is in an upright state, the cable 17 is inserted through the opening 43 between the tongue pieces 34, and the cable 17 is laid on the closing portion 33. Here, since the cable 17 is placed on the closing portion 33 of the opening / closing plate 32, the closing portion 33 stands up even if a force is applied in the direction of tilting the tongue 34 for some reason. There is no.

When the truck 12 completely enters the automatic warehouse 1, the door 14 is automatically closed to prevent the inflow and outflow of air at the entrance / exit 13. At this time, in the cutout portion 24 of the shielding plate 23, the tongue piece 34 is in an upright state, so that only the opening portion 43 of the opening / closing plate 32 is in an open state (FIGS. 5 and 5). 6).
Therefore, the notch 24 is not entirely opened, but the opening area of the notch 24 is reduced by the area of the tongues 34 so that the inflow and outflow of air is reduced as much as possible.

The trolley 12 that has entered the automatic warehouse 1 travels to the trolley station 10, and at the trolley station 10, the object 15 is transported to the predetermined shelf 3 by the stacker crane 5.

Next, the case where the carriage 12 leaves the automatic warehouse 1 will be described. When the truck 12 runs from the truck station 10 toward the doorway 13 and stops in front of the door 14, the door 14 is automatically opened. After the door 14 is opened, the truck 12 runs. Here, when the carriage 12 travels toward the loading / unloading station 7, the cable reel 2
0 rotates as shown in FIG. 7 and winds the cable 17 while rotating by the internal spring force. The movable pressing piece 53 of the opening / closing device 50 of the carriage 12 approaches the tongue piece 34 of the opening / closing plate 32 (see FIG. 8A), and when the carriage 12 further travels, the movable pressing piece 53 moves the tongue piece 34. Pressing is continued (see FIG. 8 (b)). Then, as the movable pressing piece 53 passes, the tongue piece 34 is tilted while rotating the opening / closing plate 32 (see FIG. 8C). When the opening / closing plate 32 rotates 90 degrees, the closing portion 33 is in an upright state, and closes the cutout portion 24 of the shielding plate 23.

When the carriage 12 completely exits from the entrance / exit 13, the door 14 is closed to shield the entrance / exit 13, and the door 14 and the notch 24 of the shield plate 23 are closed automatically by the closing part 33 of the opening / closing plate 32. The inflow and outflow of air into the warehouse 1 is prevented, and the temperature change in the automatic warehouse 1 is prevented.

As described above, in the present embodiment, the rotatable opening / closing plate 32 is provided in the cutout portion 24 of the shielding plate 23, and the opening / closing device 50 for opening / closing the opening / closing plate 32 is provided on the truck 12 side. Thus, the notch 24 can be closed without any processing on the door 14 side, and the inflow and outflow of air in the automated warehouse 1 can be prevented. Further, since the door 14 side is not processed, for example, a commercially available door can be used. Further, when driving the opening / closing plate 32, the carriage 12
Since the opening / closing device 50 provided on the side is used, the opening / closing plate 3
No separate power source or control device is required for opening and closing 2,
It keeps costs down. Further, even when the truck 12 is entering the automatic warehouse 1, the tongues 3 of the opening / closing plate 32 are
Since 4 stands up and blocks both sides of the notch 24, it prevents the inflow and outflow of air as much as possible and contributes to the efficiency improvement of heat retention and cold insulation.

The movable pressing piece 53 of the opening / closing device 50 is rotatable on the side opposite to the trolley 12 side for the following reason. That is, the fixed pressing piece 51 of the opening / closing device 50.
Before the user pushes down the closing portion 33 of the opening / closing plate 32, the fixed pressing piece 51 passes through the opening 43 of the opening / closing plate 32 when the closing portion 33 falls down and the tongue piece 34 stands up for some reason. This is because if the movable pressing piece 53 is fixed, the movable pressing piece 53 collides with the tongue piece 34 to cause a problem. Therefore, by making the movable pressing piece 53 rotatable by the butterfly plate 52, even if the tongue piece 34 is upright, the movable pressing piece 53 rotates and the movable pressing piece 53 gets over the tongue piece 34. The dolly 12 can travel smoothly.

The fixed pressing piece 51 and the movable pressing piece 53 of the opening / closing device 50 may be made of spring steel.
Further, if only the movable pressing piece 53 is made of spring steel, the tongue piece 34 standing up due to its elasticity can be overcome, so that the butterfly plate 52 can be eliminated.

In the above embodiment, the case of the automatic warehouse 1 for keeping warm and keeping cold is explained, but the present invention can be applied to the case of a general warehouse.

[0036]

According to the door opening / closing device of the first aspect of the present invention, the opening surface below the door can be closed by the opening / closing member after passing through the entrance / exit of the vehicle. Since the opening / closing member is arranged on the floor side, it is not necessary to separately attach a closing member to the door as in the conventional case, and the height of the opening of the door can be minimized. Furthermore, the shape of the door can be simplified, and for example, a commercially available door can be easily used. Further, since the opening / closing member is rotatably driven by the opening / closing drive device provided on the side of the transport vehicle to close the opening surface, a separate power source or control device is not required, and cost increase can be suppressed. Also, when this device is applied to a warehouse for keeping warm or cold, for example, since the opening / closing member closes the opening surface under the door, inflow and outflow of air can be prevented, and the warm inside of the warehouse is kept warm. , The efficiency of cold storage can be improved.

According to another aspect of the present invention, in the case of entering the inside of the door, the first pressing piece of the opening / closing drive device pushes down the closing part of the opening / closing member and the tongue piece. By standing up, the cable reel of the carrier can be passed through the opening between the tongues. Therefore, when the transport vehicle is inside, both tongue pieces stand up and block both sides of the cutout portion of the shielding plate, so the opening area of the cutout portion is made small and the inflow and outflow of air into the inside is performed. Can be prevented even a little. Further, when the transport vehicle goes out of the door, the second pressing piece of the opening / closing drive device pushes down the tongue piece of the opening / closing member to raise the closed portion, and thereby the raised closed portion is removed. The cutout portion of the shield plate can be closed. Therefore, the cutout portion of the shield plate can be surely closed by the closing portion of the opening / closing member, and the inflow and outflow of air into the inside can be surely prevented.

According to the door opening / closing device of the third aspect, even if the closing part of the opening / closing member falls down and the tongue piece stands up for some reason, the first pressing piece of the opening / closing drive device is The tongue can pass through the opening without colliding with the tongue, and even if the second pressing piece comes into contact with the tongue, the second pressing piece rotates to easily get over the tongue. Therefore, the transport vehicle can travel smoothly.

[Brief description of drawings]

FIG. 1 is a front view showing a passing state of a truck at an entrance / exit according to an embodiment of the present invention.

FIG. 2 is a side view showing a passing state of a truck at an entrance / exit according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view of the shielding plate, the opening / closing plate, and the opening / closing device according to the embodiment of the present invention.

4 (a) to 4 (c) are operation explanatory views showing open / closed states of the opening / closing plate in the embodiment of the present invention.

FIG. 5 is a perspective view of an essential part when the opening / closing plate is tilted according to the embodiment of the present invention.

FIG. 6 is a front view showing a state after passing of the truck at the doorway according to the embodiment of the present invention.

FIG. 7 is a front view showing a passing state of a truck at an entrance / exit according to the embodiment of the present invention.

8 (a) to 8 (c) are operation explanatory views showing open / closed states of the opening / closing plate in the embodiment of the present invention.

FIG. 9 is a schematic configuration diagram of an automated warehouse.

FIG. 10 is a side view of the carriage.

FIG. 11 is an explanatory diagram of a case where a shield plate of a conventional example is provided with a cutout portion.

FIG. 12 is an explanatory diagram of a case where a conventional shield plate is provided on a door.

[Explanation of symbols]

11 rail 12 trolley 13 doorway 14 door 20 cable reel 21 floor 23 shielding plate 24 notch 32 opening / closing plate 33 closing part 34 tongue piece 50 opening / closing device 51 fixed pressing piece 52 movable pressing piece H ₁ shielding plate height H ₀ Height required to pass through the door of a truck with a load

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F25D 23/02 301 F25D 23/02 301F

Claims (3)

[Claims] 1. A door opening / closing device for opening / closing an opening formed between a floor and a lower end of a door provided at an entrance / exit of a transport vehicle, wherein the opening / closing device opens and closes the opening. A mold opening / closing member is rotatably disposed on the floor surface side, and the opening / closing member is rotationally driven when passing through the entrance / exit of the carrier, and the opening surface is closed by the opening / closing member after passing through the entrance / exit. An opening / closing device for an opening of a door, wherein an opening / closing drive device is provided in a transport vehicle. 2. A rail for running the transport vehicle is laid through the opening surface below the door, and the rail extends through the rail at a right angle to the rail and is arranged on the transport vehicle. A shield plate having a cutout for passing through the opening surface is provided, and the opening / closing member is provided from a closing part that closes the cutout of the shielding plate and end portions on both sides of the closing part. The tongue and the space between the tongues are composed of an opening for passing the cable reel, and the opening / closing drive device presses the closing part of the opening / closing member when entering the inside of the door. And a second pressing piece that presses down the tongue piece of the opening / closing member to push down the tongue piece when it comes out of the door. The opening opening / closing device for a door according to claim 1. 3. The position of the first pressing piece of the opening / closing drive device is arranged corresponding to the position of the opening of the opening / closing member, and the position of the second pressing piece is set to the position of the tongue piece. The opening and closing device for opening and closing a door portion according to claim 2, wherein the opening and closing device for the door portion is arranged correspondingly, and the second pressing piece is provided so as to be rotatable in a direction opposite to the side of the transport vehicle.