JPH10299333A - Opening/closing device for hatch or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a drive source even in a narrow installation space by stretching a motor cylinder comprising a small diameter cylindrical body stored in a large diameter cylindrical body in a retractable manner by a feed screw between a lid body and a wall, etc., and opening/closing the lid body provided on an opening part of a building by the expansion/contraction of the motor cylinder. SOLUTION: In a motor cylinder 3, an input shaft 3c to be connected to a motor, etc., and a bevel gear are stored in a base part 3b coupled with a root side of a large diameter cylindrical body 3a, and a nut member is screwed into a feed screw coupled with the bevel gear. A small diameter cylindrical body 3k to be closely and freely inserted in the large diameter cylindrical body 3a is connected to the nut member, a tip piece 3n is connected to a member 1b of a hatch 1, and its rear end side is pivotably supported by a bracket 5 provided on a wall W of a building. When the motor cylinder 3 is driven and the small diameter cylindrical body 3k is stored in the large diameter cylindrical body 3a, the hatch member 1b is erected around a hinge 2, a hatch member 1c is raised by the raising operation of the hatch member 1b and a hinge 1a, and an end part of hatch member 1c slides to open the lid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large and heavy hatch or door opening / closing device provided in a building of a nuclear facility or the like.

[0002]

2. Description of the Related Art Nuclear facilities and other large equipment,
In a building in which equipment is installed in a building, large-sized equipment and equipment are loaded into and out of the building, and are used for loading and unloading of the equipment and the like on an upper floor or ceiling. A large-diameter opening is provided and a hatch is provided in this opening.

[0003] When the hatch is closed, it is in a horizontal position flush with the floor or ceiling provided with the hatch. When the hatch is opened, the hatch is centered on a hinge formed at one end of the hatch. The hatch provided is large and heavy, and the structure of the opening and closing mechanism of the hatch has conventionally been a matter for those skilled in the art.

FIGS. 7 and 8 show a conventionally known hatch opening / closing device, and FIG. 7 shows a pulling / lifting type opening / closing device which is formed as follows. That is, the hatch Ha is formed into a two-fold type in which the hatch Ha is divided into two parts, and a large hinge Hi having an offset axis hs is provided at one end of the hatch Ha.
ha1 is connected to a tip wa of a tow rope Wc by a chain or a wire rope, and the rear of the rope W is wound by a hoisting mechanism Wn driven by a motor M via a relay pulley Iw. ing.

In the opening / closing device shown in FIG. 7, when the rope Wc is wound, one hatch member ha1 stands up around the axis hs of the hinge Hi, and at the same time, the other hatch member ha2 is connected to the connection shaft S
The hatch member ha1 is opened by following the one hatch member ha1 while being bent, and when the hatch Ha is closed, the rope Wc is extended in the opposite direction to the hatch member ha1.
1, ha2 is operated on the opposite side to the above-mentioned case of opening. In FIG. 7, Wk is a wall of a building, F is a floor, and LH is a large-diameter square hole opened in the floor F.

FIG. 8 shows an example of an axis hs of the hinge Hi in FIG.
Is connected to the output shaft of a speed reducer (power booster) G driven by a motor M, thereby opening and closing the hatch Ha. 8, the same reference numerals as those in FIG. 7 indicate the same members and the same portions.

The pulling / lifting type opening / closing device shown in FIG. 7 has the advantage that it can be opened and closed even with a heavy hatch, but the pulley Iw is located at a high position on the wall Wk and the rope Wc passes therethrough. In addition, maintenance is somewhat difficult,
Even if the hatch Ha stands between the hinge Hi and the wall Wk, these devices M, Wn, and Iw can be provided without the hatch Ha interfering with the motor M, the hoisting mechanism Wn, and the pulley Iw. You need to have space.

On the other hand, the direct rotation type has no problem of the pulling and lifting system, and has an advantage that the number of parts is small and maintenance is easy because there are no pulleys Iw or ropes Wc. Is large, the motor M and the speed reducer G
Is difficult to adopt because of its capacity and its cost.

In particular, in the shaft direct rotation system shown in FIG. 8, as shown in FIG. 9, the space between the standing hatch Ha and the wall Wk is narrow, and the hinge Hi of the hatch Ha has a column P projecting from the wall Wk.
When the motor M and the speed reducer G are located between the pillars P, the shaft Hs of the hinge Hi must be rotated via the sprocket St and the chain Ch. Problem.

[0010]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the present invention relates to a large and heavy hatch or door having a standing or opened hatch or door and a gap between the door and the wall of the building. A hatch or a door in which an opening / closing drive source such as a motor cannot be provided in that portion is provided, so that the drive source can be provided even when the installation space of the drive source is such a narrow space. A primary object is to provide an opening and closing device, and also to provide a heavy hatch and a door opening and closing device that cannot be applied to a conventional direct rotation shaft using a motor or a speed reducer because the weight of the hatch is large. That is the second task.

[0011]

Means for Solving the Problems The structure of the switchgear of the present invention, which has been made to solve the first problem, is as follows.
A hinge disposed at an opening formed near a corner having a L-shaped vertical section or a flat section formed by the wall and floor of the building or the wall and ceiling, and one end near the corner of the opening. A lid by a hatch or a door is disposed so as to be openable and closable via a motor, a motor and a screw that is driven to rotate by the motor, a feed screw housed in a large-diameter cylinder, and the screw. A motor cylinder consisting of a small-diameter cylindrical body having a nut member screwed at the rear end and housed in the cylindrical body so as to be able to protrude and retract is mounted on a wall positioned orthogonal to the lid and an opening in the building. And the like, and the cover body is opened and closed with respect to an opening by a hinge of the motor cylinder by an expansion and contraction operation of the motor cylinder.

The structure of the switchgear of the present invention, which has been made to solve the above second problem, has a large weight by means of a hatch or a door that can be freely opened through a hinge in an opening formed in a floor or a wall of a building. A lid is disposed, the hinge axis extends through the side of the lid as a through axis, and a lever-like operating arm is attached to an extension of the shaft. A motor and a motor are attached to the operating arm. A small-diameter cylinder which is a screw that is rotationally driven and has a feed screw accommodated in a large-diameter cylinder and a nut member screwed to the screw at a rear end and is accommodated in the cylinder so as to be freely retractable. A motor cylinder consisting of: a bridge between the operating arm and the side of the lid body where the hinge is not provided, and the motor body extends and retracts so that the lid body faces the opening. Opening operation at the hinge It is characterized in that the the.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an example in which an example of the opening / closing device of the present invention is applied to a hatch, FIG. 2 is a plan view of the device of FIG. 1, FIG.
5 is a plan cross-sectional view illustrating the configuration of a motor cylinder used as an opening / closing drive source of the apparatus of the present invention, FIG. 5 is a plan view of an example in which another example of the opening / closing apparatus of the present invention is applied to a hatch, and FIG. 6 is the apparatus of FIG. 7, FIG. 7 is a front view of an example of a conventional switchgear, FIG. 8 is a front view of another example of the conventional switchgear, and FIG. 9 is a plan view of the conventional switchgear of FIG.

In FIGS. 1 and 2, W is a wall of a building, B is a beam extending from the wall W to the front, F is a floor of the building, and a floor F on which a hatch 1 described later is mounted. A rectangular opening LH is formed.

In the opening LH, hatch members 1b and 1c which are folded in a mountain shape via a hinge 1a in the middle are pivotally attached to the offset type hinge 2 in one of the hatch members 1b so that the position of the shaft 2a is offset. As a result, when the hatch member 1b is rotated counterclockwise about the axis 2a of the hinge 2, the hatch member 1c is driven by the rotation, and the hatch 1 is folded into two at the hinge 1a and stands up. Be attached so that you can. The side end of the hatch member 1c (the right end in FIG. 1)
The guide wheel 1d is attached to the vehicle so that the side end slides along the opening surface when the member 1c stands up or falls down. In addition, a safety shelf GL is provided on the outer periphery of the opening LH.
Is provided.

3 is to open and open the hatch 1 with the opening LH closed in the closed state, or to act as a drive source for closing the hatch 1 from the open state. Hatch member 1b on hinge 2 side (left side in FIG. 1)
A motor cylinder having a structure shown in FIG. 4 is used as an example.

In the motor cylinder 3 shown in FIG. 4, a gear box-shaped base 3b in which bearings and gear trains are accommodated is connected to the base side of the large-diameter cylindrical body 3a. In the base 3b, an input shaft 3c for inputting rotation of the motor M and the like, and bevel gears 3d and 3e for changing the rotation direction of the shaft 3c by 90 degrees are housed via bearings 3f and 3g. The lower end (root side) of a feed screw 3h, which is slightly shorter than the length of the cylindrical body 3a, is connected to the bevel gear 3e. 3i is a bearing for the screw 3h.

A nut member 3j is screwed onto the feed screw 3h, and a lower end portion (root side) of a small-diameter cylinder 3k that is loosely inserted into the large-diameter cylinder 3a is connected to the nut member 3j. ing.
3m is a bush-shaped small-diameter cylinder receiver mounted on the tip of the large-diameter cylinder 3a, 3n is a coupling fitting provided on the tip of the small-diameter cylinder 3k, and is an example of the motor cylinder 3 using the above members 3a to 3n. Is composed.

As shown in FIGS. 1 and 2, the motor cylinder 3 has a tip metal fitting 3n at the tip (small-diameter cylindrical body 3k) connected to the front of one member 1b of the hatch 1 by a horizontal shaft 4. At the same time, the rear end side is pivotally supported by the bracket 5 provided on the wall W of the building at the input shaft 3c. Here, the bracket 5 is provided so as to be deviated upward and rearward from the axis 2 a of the hinge 2 of the hatch 1. In the illustrated example, two motor cylinders 3 are provided in parallel in the middle of the hatch member 1b.
Are formed such that their input shafts 3c, 3c are connected via a connecting shaft 6 and are operated synchronously by one motor M.

The input shaft 3c of the motor cylinder 3 is connected to a manual input system rotated by the rotation of the manual handle 7 via a motor M here for safety. The structure of the manual input system is arbitrary, but here, a structure formed by a chain 7a, a sprocket 7b, a transmission shaft 7c, a pulley 7d, a belt 7e, and the like is used.

Now, in order to open the hatch 1 from the closed state shown by the solid line in FIG. 1, the motor cylinder 3 is driven to the side where the small-diameter cylinder 3k fits into the large-diameter cylinder 3a.
1b follows the retreat of the small-diameter cylinder 3k, and starts to stand about the axis 2a of the hinge 2. When the hatch member 1b starts to stand,
The hatch member 1c is driven by the floating operation of the member 1b and the hinge 1a.
The hinge 1a side of the hatch member 1c
Start to slide so that the right edge of is pulled to the left.
If the motor cylinder 3 continues to be driven, the hatch 1
The motor cylinder 3 and the motor cylinder 3 stand in a posture shown by a broken line in FIG. That is, the lid is opened.

The open end of the door is located at an appropriate position such as the door stop stopper 8, the wall W, the bearing 5a of the bracket 5, or the like.
A sensor for opening the lid (not shown) may be provided, and the sensor may detect the end of the opening of the lid to control the motor M to decelerate and stop. In order to close the hatch 1 in the open state shown by the broken line in FIG. 1, the motor cylinder 3 may be operated in the direction opposite to the case of the above-described open operation. Then, the detection of the end of the lid closing and the stop control of the motor M are:
What is necessary is just to perform it in the same way as the case of the lid opening end. Motor M
Is controlled by, for example, inverter control, and the hatch 1
Arbitrarily controls the opening and closing speed of

The switchgear of the present invention described with reference to FIGS.
There is not enough space between the wall W and the opening LH to install a large reducer or motor, and even if there is space to place the reducer, the hatch where the arranged reducer and the like stand up If the motor cylinder 3 has a base end provided on the bracket 5 provided on the wall W via the shaft 5a, the motor cylinder 3 stands up when the hatch 1 is opened. The hatch 1 has an advantage that it does not interfere with the hatch 1 and has a small space occupancy of the open / close drive source. Furthermore,
Motor cylinder 3 is increased (decelerated) by nuts and screws
Since the mechanism is built in, a large forward / backward driving force can be obtained even with a small-capacity motor M.

In the example described with reference to FIGS. 1 and 2 above, the present invention is applied to a hatch opening and closing device. However, the opening and closing device of the present invention has the above-mentioned advantages, and is formed near a wall in a building. It is also useful as an automatic door opening and closing device for doorways. This point will be described with reference to FIG. 3, but in FIG. 3, the same members as those in FIGS.
The same parts use the same reference numerals.

In FIG. 3, an opening LH for an entrance is formed near a wall, and a door D is provided via a hinge 2 on a column P near the wall. In order to automatically open and close the door D, the motor cylinder 3 is installed between the door D and the wall W1 near the hinge 2, and the motor cylinder 3 is extended and contracted in the same manner as in the above-described example of hatch opening and closing. Door D with the cylinder 3 reduced
And the door D can be closed by the extension operation. Particularly, in the door opening operation, the motor cylinder 3 is connected to the hinge 2 of the door D.
Is provided on the wall W1 via the bracket 5 so as to be offset from the axis 2a of the shaft 2a, so that it fits perfectly in a narrow space formed by the opened door D and the wall W1, and therefore, the space efficiency is extremely high.

The motor cylinder 3 used in the opening and closing device of the present invention can be used as the opening and closing device of the hatch 1 in the forms illustrated in FIGS. 5 and 6, and this point will be described below. 5 and 6, the same members and the same portions as those in FIGS. 1, 2 and 4 are denoted by the same reference numerals.

5 and 6, the hinge 2 of the hatch 1
The extension 2b is provided with an operating arm A acting as a pivot, and the bracket 5 provided on the floor F on the opposite side of the hatch 1 is supported by the base 3b. By connecting the end fitting 3n of the motor cylinder 3 to the upper end of the arm A, the hatch 1 is opened and closed. 5 and 6, Gm is a speed reduction mechanism.

When the motor cylinder 3 shown by a solid line is extended, the hatch 1 shown in FIGS. 5 and 6 is displaced to a position shown by a chain line and a symbol with a dash and is opened. The motor cylinder 3 of this example is the same as the motor cylinder 3 of the previous example.
The hatch 1 is opened by the extension operation, and the hatch 1 is closed by the reduction operation. This is because the motor cylinder 3 is arranged facing the hinge 2 with respect to the opening LH. 5 and 6 are formed as a hatch opening / closing device provided on the floor, but this opening / closing device can be directly applied to a heavy door opening / closing device provided on a wall.

[0029]

As described above, the present invention provides a heavy-duty lid opening / closing device mounted on an opening of a building such as a hatch or a door, which can be used for a wall and a floor of a building or a wall and a ceiling. A hatch or a door that can be opened and closed via a hinge disposed at one side end near the corner of the opening formed in the vicinity of a corner having a vertical cross section or a flat cross section formed in an L shape. At the rear end, a motor, a screw driven by the motor and a feed screw housed in a large-diameter cylinder, and a nut member screwed on the screw are attached to the lid. A motor cylinder consisting of a small-diameter cylindrical body which is housed in the cylindrical body so as to be able to protrude and retract so as to extend between the lid and a wall or the like which is orthogonal to an opening in the building. , As an automatic opening and closing device where there is not enough space between the lid to open and the wall It is a use.

In the conventional opening / closing device using a motor and a speed reducer, which is a drive source for opening and closing a hatch of a type in which a hinge shaft is directly rotated, a heavy hatch and a door cannot be opened and closed. Utilizing a lever-like operation arm for converting the cylinder's forward / backward movement and this movement into a rotation movement, it is possible to form a space-efficient opening / closing device capable of opening and closing even a heavy hatch or the like. it can.

[Brief description of the drawings]

FIG. 1 is a front view of an example in which an example of the opening / closing device of the present invention is applied to a hatch.

FIG. 2 is a plan view of the apparatus of FIG.

FIG. 3 is a plan view of an example in which the device of the present invention is applied to a door.

FIG. 4 is a plan cross-sectional view illustrating the configuration of a motor cylinder used as an opening / closing drive source of the apparatus of the present invention.

FIG. 5 is a plan view of an example in which another example of the switchgear of the present invention is applied to a hatch.

FIG. 6 is a front view of the apparatus of FIG. 5;

FIG. 7 is a front view of an example of a conventional switching device.

FIG. 8 is a front view of another example of the conventional switchgear.

FIG. 9 is a plan view of the conventional device of FIG. 8;

[Explanation of symbols]

 Reference Signs List 1 hatch 1a hinge 1b, 1c hatch member 2 offset type hinge 2a hinge shaft 3 motor cylinder 3a large-diameter cylinder 3b gearbox-shaped base 3c input shaft 3d, 3e bevel gear 3f, 3g bearing 3h feed screw 3i bearing 3j Nut member 3k Small-diameter cylinder 3m Small-diameter cylinder receiver 3n Coupling bracket 4 Horizontal shaft 5 Bracket 6 Connecting shaft 7 Handwheel 7a Chain 7b Sprocket 7c Transmission shaft 7d Pulley 7e Belt 8 Stopper W, W1, W2 Wall F Floor D Door LH opening

Claims (5)

[Claims] 1. An opening formed in the vicinity of a corner having an L-shaped vertical section or plane section formed by a wall and a floor or a wall and a ceiling of a building, and one side of the opening near the corner. A lid with a hatch or a door is arranged to be openable and closable via a hinge arranged at the end, and a motor and a screw driven by the motor are housed in the large-diameter cylinder with respect to the lid. A motor cylinder consisting of a feed screw and a small-diameter cylindrical body having a nut member screwed to the screw at the rear end and housed in the cylindrical body so as to be able to protrude and retract is orthogonal to the lid and the opening in the building. An opening / closing device for a hatch or the like, wherein the opening / closing operation is performed by opening and closing the lid with respect to an opening by a telescopic operation of the motor cylinder. 2. The lid is a hatch mounted in a horizontal position on an opening formed on the floor or ceiling of the building, and the motor cylinder is installed between the hatch and a wall of the building orthogonal to the hatch. An opening and closing device such as the hatch according to claim 1. 3. The door according to claim 1, wherein the lid is a door mounted in a vertical position in an opening formed in a wall of the building, and the motor cylinder is provided between the door and a wall of the building orthogonal to the door. Switchgear for hatches and the like. 4. The opening / closing device for a hatch or the like according to claim 1, wherein the hatch and the door are connected in a two-fold structure at an intermediate portion thereof. 5. A large-capacity lid by a hatch or a door is disposed at an opening formed on a floor or a wall of a building through a hinge so as to be freely opened via a hinge, and the axis of the hinge passes through the side of the lid. And a lever-shaped operating arm is attached to an extension of the shaft, and a motor and a screw that is driven by the motor and that is rotatably driven by the motor and that is accommodated in a large-diameter cylindrical body. A motor cylinder comprising a nut member screwed to the screw at the rear end and a small-diameter cylindrical body housed in the cylindrical body so as to be able to protrude and retract. An opening / closing device for a hatch or the like, wherein the opening / closing device is provided between a side where a hinge is not provided and an opening / closing operation of the lid with respect to an opening by expansion / contraction operation of the motor cylinder.