JP2002003183A - Door inverting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable efficient inversion work of a door by one worker. SOLUTION: This door inverting device 1 has a first table 3, a second table 4, a table lifter 5 or the like. In the door inverting device 1, the door D is placed on the first table 3 with both the tables 3, 4 positioned in a normal position by the table lifter 5. Next, both the tables 3, 4 are positioned in an inversion position forming a nearly V-shape by the table lifter 5. The worker pushes down the door D from the first table 3 toward the second table 4 around a doorstop D1 of the door D. As a result, the door D inverts and leans on the second table 4 with the upper face downward and the lower face upward. Last, by positioning both the tables 3, 4 to the normal position by the table lifter 5, the door D is placed on the second table 4 with the door D inverted as compared with the initial state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door reversing device for reversing a door to change from a state in which one surface is up to a state in which the other surface is up.

[0002]

2. Description of the Related Art Conventionally, doors attached to entrances and exits of railway vehicles are regularly inspected and repaired on the inside, outside, door stop and the like of the doors. For example, if inspection of the outside of the door reveals that the paint has come off, putty is applied to that part and repaired.

[0003] In performing such inspection and repair, it is necessary to turn the door upside down to change from a state in which one surface is up to a state in which the other surface is up. Because of this, usually one person had the upper part of the door and the other person had the lower part of the door, and two people performed the door reversal work.

[0004]

However, there is a problem that it is not preferable from the viewpoint of work efficiency to perform the reversing operation of the door by two people. On the other hand, as an apparatus for performing a door reversing operation by itself, for example, as shown in FIG. 6, a belt type reversing machine 120 is attached to a crane 110, and a pulley 121 of the belt type reversing machine 120 and a door D are connected. It is hung over the belt 122, and the belt 12
A device for reversing the door D by rotating the door 2 is known, but it is necessary to hang the belt 122 over the door D before the reversing operation, and to perform the operation of turning the belt D from the door D after the reversing operation.
The work efficiency has not been sufficiently improved because the work of removing the work 2 also becomes necessary.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a door reversing device capable of efficiently performing a door reversing operation by one person.

[0006]

Means for Solving the Problems and Effects of the Invention In order to solve the above problems, the present invention changes the state in which one side of the door is turned upside down to the state in which the other side is upside down. A first table on which a door can be placed, a second table on which a door can be placed, and a first and a second table.
A table support mechanism that supports the tables and positions the tables at one of a normal position where the table surfaces of both tables are substantially coplanar and a reversal position where the table surfaces of both tables form a substantially V-shape; It is characterized by having.

In the door reversing device of the present invention, first, the door is placed on the first table in a state where both tables are positioned at the normal positions by the table support mechanism. Next, both tables are positioned at the reverse position by the table support mechanism.
Then, both tables take a substantially V shape. For this reason, if the worker pushes down the door from the first table toward the second table around the vertical edge of the door, the door is turned upside down and down. The face is up and leans on the second table. Thereafter, if both tables are positioned at the normal position by the table support mechanism, the door is placed on the second table in a state of being inverted from the beginning.

As described above, according to the door reversing device of the present invention, the door is reversed in a state where both tables are positioned at the reversing position where a substantially V-shape is formed. Less force is required to make it work.
Therefore, the door reversing operation can be easily performed by one person, and the effect that the operation efficiency is improved can be obtained.

In the door reversing device according to the present invention, a door support for preventing the door from contacting the table surface may be provided on each table surface of both tables. In this case, it is possible to prevent the door from rubbing against the table during the reversing operation and damaging the surface.
The door cradle is preferably made of a material that is more flexible than the material of the table in consideration of preventing the door from being scratched. For example, the door cradle is made of an elastic material such as rubber or resin. It is preferred that

In the door reversing device of the present invention, a door protector is provided near the opposing sides (inner sides) of the two tables positioned at the reversing position by the table support mechanism to protect the upright edge of the door to be reversed. You may. In this case, when the tables are positioned by the table support mechanism so as to form a substantially V-shape, the table on which the door is mounted is inclined,
Even if the door slides down along the slope and the upright edge of the door (rubber per door, etc.) collides with the substantially V-shaped groove, the impact is reduced by the door protector. The rim is not damaged. Further, when the door is turned over, the upright edge of the door becomes the axis, but since the upright edge of the door is protected by the door protector, there is no damage even if it is rubbed. Note that the door protector is preferably made of a material that is more flexible than the material of the table in consideration of preventing the door from being damaged, and is made of, for example, an elastic material such as rubber or resin. Is preferred.

In particular, the door protector is preferably a roller made of an elastic material rotatable around a rotation shaft provided along the inner side of both tables. In this case, when the door is turned over, the upright operation of the door is further facilitated by placing the upright edge of the door on this roller and rotating it.

In the table support mechanism of the door reversing device of the present invention, both tables may be positioned at either the normal position or the reversing position by operating an actuator with a foot switch. In this case, since the foot switch may be operated by foot, both hands are free in positioning both tables, and the workability is further improved. The actuator is not particularly limited, but may be an operating cylinder such as a hydraulic cylinder or a pneumatic cylinder, or may be an electric motor.

[0013] The door reversing device of the present invention comprises a first column having an upper end swingably connected to the outer side of the first table and a lower end swingably connected to the base; And a second support pivotally connected to the outer side of the first table and having a lower end pivotally connected to the base, and the table support mechanism includes a hinge on the inner side of the first table. It may be configured to include a drive table that is connected and connected to the inner side of the second table via a hinge, and an actuator that moves the drive table up and down.

In this case, in the normal position, the actuator raises the drive table and supports the first and second tables so that the table surfaces are substantially flush with each other via the drive table. At this time, the first and second columns support outer sides of the first and second tables. On the other hand, in the reverse position, the actuator lowers the drive table and supports the first and second tables so that the table surfaces form a substantially V-shape via the drive table. At this time, the first and second columns support the outer sides of the first and second tables in a state where the first and second columns are tilted inward with respect to the normal position. According to this table support mechanism, the effects of the present invention can be obtained with a relatively simple configuration, which is preferable. In this table support mechanism, it is preferable to provide the above-described door protector on the drive table.

In the door reversing device of the present invention, when both tables are positioned at the reversing position by the table supporting mechanism,
Although the angle of the V-shape formed by both tables (the angle formed by both table surfaces) is not particularly limited, it is preferably 60 to 120 °, and particularly preferably 70 to 110 °. If this angle is too narrow, there is a risk that the door will return to its original state when the door is turned over, and if this angle is too wide, the force required to turn over the door will increase, making it difficult for a person to work alone. .

Further, the door applied to the door reversing device of the present invention can be applied to all doors, specifically, doors for railway cars, automobiles, aircrafts, etc., as well as doors and factories used for ordinary houses. And doors used for special facilities.
Further, the present invention is applicable not only to doors but also to heavy objects that require inspection and repair on both front and back surfaces.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of the door reversing device, FIG. 2 is a plan view thereof, and FIG. 3 is a side view thereof.
In FIG. 1, illustration of a hydraulic cylinder and the like is omitted.

The door reversing device 1 of the present embodiment comprises a base 2,
It comprises a first table 3, a second table 4, and a table lifter 5 as a table support mechanism. As shown in FIG. 2, the base 2 is formed by assembling metal columns into a square shape, and the lower ends of the first columns 21 and 21 are swingably attached to two corners on the first table side among the four corners. And
At the two corners on the second table side, the lower ends of the second columns 22, 22 are swingably attached. Further, two bars 23, 23 parallel to the long sides of both tables 3, 4 are bridged on the base 2, and a table lifter 5 is installed between the two bars 23, 23. .

The first table 3 is provided with a door D (see FIG.
) Is a metal table having a substantially rectangular shape and a size capable of mounting thereon, and has a rectangular notch 31 on the inner side 3b. On the upper surface of the first table 3, a pair of door receiving bases 32 is provided along the edge of the short side. The height of the door support 32 is set to a height at which the door D does not contact the table surface when the door D is placed. On the lower surface of the first table 3, reinforcing standing plates 33, 33 parallel to the short sides are provided on both sides of the notch 31. Furthermore,
At two corners on the outer side 3a side of the first table 3, the first support 2
The upper ends of 1, 21 are swingably attached.

The second table 4, like the first table 3, is a substantially rectangular metal table large enough to mount the door D of a railway car, and has a rectangular notch 41 on the inner side 4b.
It has. On the upper surface of the second table 4, a pair of door receiving pedestals 42, 42 is provided along the edge of the short side. The height of the door support 42 is set in the same manner as the door support 32. On the lower surface of the second table 4, reinforcing standing plates 43, 43 parallel to the short sides are provided on both sides of the notch 41. Further, the upper ends of the second columns 22, 22 are swingably attached to the two corners of the second table 4 on the outer side 4a side.

The table lifter 5 includes a driving table 51.
, A supporting leg set 60, and a hydraulic cylinder 70 (see FIG. 3) as an actuator. The drive table 51 is a substantially rectangular table, and the length in the longitudinal direction substantially matches the length in the longitudinal direction of the cutouts 31 and 41 of the tables 3 and 4. In the center of the upper surface of the drive table 51, a rubber-made rotary roller 54 is provided rotatably around a rotation axis (an axis extending along the inner sides 3b, 4b of the tables 3, 4). The first table 3 is fitted from above the drive table 51 so that the drive table 51 enters the notch 31, and the second table 4 is fitted from above the drive table 51 such that the drive table 51 enters the notch 41. The inner side 3b of the first table 3 and the inner side 4b of the second table 4 are assembled so as to face each other.

This drive table 51 is composed of both tables 3,
4 is provided with a flange 52 at a position facing one of the upright plates 33 and 43 (upper side in FIG. 2), and at a position facing the other (lower side in FIG. 2) upright plates 33 and 34 of both tables 3 and 4. A flange 53 is provided. One standing plate 33 of the first table 3 is connected to a flange 52 via a hinge 52a.
And the other standing plate 33 is attached to the flange 53 via a hinge 53a. One upright plate 43 of the second table 4 is attached to the flange 52 via a hinge 52b, and the other upright plate 43 is attached to the flange 53 via a hinge 53b.

That is, the driving table 51 is connected to the inner side 3b of the first table 3 via the hinges 52a and 53a, and the hinge 52 is connected to the inner side 4b of the second table 4.
b, 53b. The support leg set 60 is
As shown in FIG. 3, the drive table 51 is supported so as to be able to move up and down, and a first support leg 61 and a second support leg 62 are crossed in an X shape. The lower end of the first support leg 61 is swingably attached to a fixed shaft 63 provided on the bar 23 (see FIG. 1 or 2) of the base 2, and the upper end is slidable along the longitudinal direction of the drive table 51. It is attached to a simple slide shaft 64 so as to be swingable. On the other hand, the second
The upper end of the support leg 62 is swingably attached to a fixed shaft 65 provided on the drive table 51, and the lower end is swingably attached to a slide shaft 66 slidable along the bar 23 of the base 2. . The first support leg 61 and the second support leg 62 are rotatably connected by a rotation shaft 67 that connects substantially central portions of each other.

The support leg set 60 is provided on the first table side and the second table side of the drive table 51, respectively. The first support leg 61 on the first table side and the first support leg 61 on the second table side are connected to a connection shaft 68 parallel to the rotation shaft 67.
Are integrated. Further, the slide shaft 66 described above is used.
Is parallel to the rotating shaft 67 and also serves to integrate the second support legs 62 on the first table side and the second support legs 62 on the second table side.

The hydraulic cylinder 70 has a cylinder portion 71 and a plunger portion 72, and a hydraulic control device 73 is connected to the cylinder portion 71. The lower end (the bottom of the cylinder portion 71) of the hydraulic cylinder 70 is supported by the slide shaft 66, and the upper end (the end of the plunger portion 72) is connected to the connecting shaft 6.
8 supported.

The foot switch 74 is provided with a hydraulic control 73
A switch for controlling the hydraulic pressure of the hydraulic cylinder 70, the lift switch 75 supplying hydraulic pressure to the cylinder portion 71 of the hydraulic cylinder 70, and a descending pedal 76 for releasing the hydraulic pressure of the cylinder portion 71. When the lift pedal 75 is depressed, the hydraulic pressure is supplied to the cylinder portion 71 and the plunger portion 72 protrudes, and the connecting shaft 68 is separated from the slide shaft 66. Therefore, the first support leg 61 rises while sliding the slide shaft 64, and Accordingly, the second support leg 62 also rises while sliding the slide shaft 66. As a result, the drive table 51 moves upward. When the drive table 51 reaches the uppermost end, the table surfaces of the two tables 3 and 4 are on the same plane (see the solid line in FIG. 1).

On the other hand, when the descending pedal 76 is depressed, the hydraulic pressure of the cylinder portion 71 is released, the plunger portion 72 is immersed, and the connecting shaft 68 approaches the slide shaft 66. The second support leg 62 falls down while sliding the slide shaft 66 while sliding. As a result, the drive table 51 moves downward. When the drive table 51 reaches the lowermost end, the table surfaces of both tables 3 and 4 take a substantially V shape. In the present embodiment, the V-shaped angle (the angle between the two table surfaces) at this time is 80 ° (see a two-dot chain line in FIG. 1).

Next, the operation of this embodiment will be described with reference to FIG.
A description will be given based on (a) to (d). First, the tables 3 and 4 are moved to the normal position by the table lifter 5 (FIG. 4A).
Position). Specifically, when the lifting pedal 75 of the foot switch 74 of the table lifter 5 shown in FIG. 3 is depressed, the hydraulic cylinder 70 operates to raise the drive table 51, and finally reaches the uppermost end. In this state, the lengths and the like of the first and second columns 21 and 22 are designed such that the table surfaces of the tables 3 and 4 are substantially flush with each other.

Then, the door D of the railway vehicle is placed on the table surface of the first table 3 in such a state that it is positioned at the normal position. The door D is placed so that the door stop D1 to which the rubber cushion is attached faces the inner side 3b. Further, the door D is a rubber door receiving base 32, 3 of the first table 3.
2 supports the table at a height that does not make contact with the table surface. The state at this time is shown in FIG.

Next, when the descending pedal 76 of the foot switch 74 of the table lifter 5 shown in FIG. 3 is depressed, the hydraulic cylinder 70 operates and the drive table 51 starts to descend. At this time, the first table 3 has a hinge 5 on the inner side 3b side.
2a and 53a, the outer side 3a is swingably connected to the base 2 via the first columns 21, 21 so that the outer side 3a faces downward from the outer side 3a toward the inner side 3b. To incline. Also, the second table 4 has the inner side 4b side connected to the drive table 51 via hinges 52b and 53b, and the outer side 4a side is swingably connected to the base 2 via the second columns 22 and 22. Also, it is inclined downward from the outer side 4a toward the inner side 4b.
Therefore, as the drive table 51 descends, both tables 3 and 4 form a substantially V-shape, and the angle of the V-shape gradually decreases. The state at this time is shown in FIG.

During this operation, the first table 3 tilted
Even if the door D slides down on the door cradle 32, 32,
Since the door stop D1 collides with the rubber rotary roller 54 to reduce the impact, the rubber cushion of the door stop D1 is not damaged. Then, when the drive table 51 reaches the lowest point and the table surfaces of both tables 3 and 4 take a substantially V-shape and are positioned at the reverse position where a predetermined V-shape angle θ (here, 80 °), the descent is performed. The depression of the pedal 76 is released. The situation at this time is shown in FIG.

In this state, if the operator pushes down the door D from the first table 3 toward the second table 4 around the door stop D1, the door D is turned upside down. Lie on the second table 4 with the lower surface facing upward. Door stop D which becomes the axis when door D is reversed
1 is protected by a rubber rotating roller 54 so that it is not damaged even if it is rubbed.
Inverting operation becomes easy if it is inverted by placing it on 4.

Subsequently, when the lift pedal 75 of the foot switch 74 of the table lifter 5 shown in FIG. 3 is depressed, the hydraulic cylinder 70 operates and the drive table 51 is raised.
Then, as shown in FIG. 4D, when the drive table 51 reaches the uppermost point and is positioned at a normal position where the table surfaces of the two tables 3 and 4 are substantially flush, the depression of the lifting pedal is released. At this time, the door D is in the second table 4
Are supported at a height that does not contact the table surface.

According to the embodiment described above, the following effects can be obtained. A reversal position where both tables 3 and 4 form a substantially V-shape (FIG. 4)
Since the door D is inverted in the state where the door D is positioned at (c), the force required to invert the door D may be smaller than when the door D is rotated by 180 °. Therefore, the reversing operation of the door D can be easily performed by one person, and the effect of improving the operation efficiency can be obtained.

The first table 3 is provided with rubber door supports 32, 32 for preventing the door D from coming into contact with the table surface, and the second table 4 is also brought into contact with the door D and the table surface. Since the door pedestals 42, 42 made of rubber are provided to prevent the door D from rubbing against the table surface, the door D can be prevented from being damaged.

A rubber rotary roller 5 is provided near the inner sides 3b and 4b of the tables 3 and 4 positioned at the reversing positions.
Since the door 4 is provided, even if the door D slides down along the inclination at the time of reversing, the door stop D1 collides with the rotating roller 54, so that the impact is reduced and there is no possibility of being damaged.

At the time of reversing, the door stop D1 is
Inverting operation becomes easy if it is inverted by placing it on 4. Since the hydraulic cylinder 70 is operated by the foot switch 74 of the table lifter 5, both hands of the operator are free, and workability is improved.

The embodiments of the present invention are not limited to the above-mentioned embodiments at all, and it goes without saying that various forms can be adopted as long as they fall within the technical scope of the present invention. For example, although the hydraulic cylinder 70 is used to raise and lower the drive table 51 in the above embodiment, another actuator such as an electric motor may be used instead. Alternatively, a jack using a ball screw mechanism may be used, and the handle may be manually turned. In this case, substantially the same effects as in the above embodiment can be obtained.

In the above-described embodiment, the rubber-made rotary roller 54 is used as the door protector, but a cushion plate (for example, a rubber plate) may be used instead. Also in this case, even if the door D slides down along the inclination at the time of reversing, the door stop D1 collides with the cushion plate, so that the impact is alleviated and there is no possibility of being damaged.

Further, in the above embodiment, both tables 3, 4
5B, the inner sides 3b and 4b are moved up and down.
As shown in FIG. 5A, the outer sides of both tables 3 and 4 may be moved up and down, or one table may be fixed and the outer sides of the other table may be fixed as shown in FIG. It is good also as composition which raises and lowers a side. In these cases, substantially the same effects as in the above embodiment can be obtained. However, FIG.
In (b), it is preferable that the angle of the V-shape when both table surfaces form a substantially V-shape be obtuse.

[Brief description of the drawings]

FIG. 1 is a front view of a door reversing device of the present embodiment.

FIG. 2 is a plan view of the door reversing device of the embodiment.

FIG. 3 is a side view of the door reversing device of the embodiment.

FIG. 4 is an operation explanatory view of the door reversing device of the present embodiment.

FIG. 5 is an explanatory diagram of another embodiment.

FIG. 6 is an explanatory view of a conventional door reversing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Door reversing device, 2 ... Base, 3 ... 1st table, 4 ... 2nd table, 5 ... Table lifter, 21 ... 1st support, 22 ... 2 pillars, 23
.. Bars, 31, 41, notches, 32, 42, door supports, 33, 43, uprights, 51, drive table, 52, 53, flanges, 52a, 52b, 5
3a, 53b: hinge, 54: rotating roller, 6
0 ... support leg set, 61 ... first support leg, 62 ...
Second support leg, 70 hydraulic cylinder, 74 foot switch, 75 upward pedal, 76 downward pedal, D door, D1 door stop.

Continued on the front page (72) Inventor Naoyuki Shimizu 1-4-1 Meieki Station, Nakamura-ku, Nagoya City, Aichi Prefecture Inside Tokai Passenger Railway Co., Ltd. (72) Inventor Hiroshi Ohba 1-1-1, Meieki Station, Nakamura-ku, Nagoya City, Aichi Prefecture No. 4 Inside the Tokai Railway Company

Claims (7)

[Claims] 1. A door reversing device for reversing a door to change from a state in which one surface is up to a state in which the other surface is up, comprising: a first table on which a door can be placed; A second table on which a door can be placed, a normal position where the first and second tables are supported and the table surfaces of both tables are substantially coplanar, and an inverted position where the table surfaces of both tables are substantially V-shaped. A door reversing device comprising: a table support mechanism for positioning both tables at any position. 2. The door reversing device according to claim 1, further comprising a door supporter on each table surface of both tables for preventing the door from contacting the table surface. apparatus. 3. The door reversing device according to claim 1, wherein the table support mechanism is configured to invert the door in the vicinity of opposing sides (hereinafter referred to as “inner sides”) of the two tables positioned at the reversing positions. A door reversing device comprising a door protector that protects an upright edge of a door. 4. The door reversing device according to claim 3, wherein the door protector is a roller made of an elastic material rotatable around a rotation axis along an inner side of both tables. 5. The door reversing device according to claim 1, wherein the table support mechanism moves both tables to a normal position or a reversing position by operating an actuator with a foot switch. A door reversing device characterized by positioning. 6. The door reversing device according to claim 1, wherein an upper end is swingably connected to an outer side of the first table and a lower end is swingably connected to a base. A first support, and a second support having an upper end swingably connected to an outer side of the second table and a lower end swingably connected to a base. A drive table connected to the inner side of the first table via a hinge and connected to the inner side of the second table via a hinge; and an actuator for moving the drive table up and down. A door reversing device. 7. The door reversing device according to claim 6, wherein the door protector according to claim 3 or 4 is provided on the drive table.