JP4579700B2 - Gate fall prevention device, gate provided with the fall prevention device, and construction method of the fall prevention device - Google Patents

Description

  The present invention relates to a fall prevention device for mobile gates such as sliding doors and telescopic gates, a gate provided with this fall prevention device, and a method for constructing the fall prevention device, particularly in cold regions with a function of preventing freezing. The present invention relates to a fall prevention device that is suitably used.

  Sliding door gates, telescopic gates, and the like are known as gates that open or close the frontage by moving the door body in the frontage direction. In this type of mobile gate, a fall prevention device is often attached to prevent the door body from falling due to strong winds or the like.

  As a conventional fall prevention device, for example, there is a structure as shown in FIG. In FIG. 5, foundation concrete is placed on the moving path of the door body 111. In this foundation concrete, a rail 115 having a groove 115a having a substantially L-shaped cross section is laid as one side wall protrudes inward. On the other hand, a moving mechanism having moving wheels 113 is attached to the bottom of the door body 111, and the door body 111 opens or closes the frontage when the wheel 113 moves on the rail. An engagement fitting 125 having a substantially L-shaped cross section is fixed to the moving mechanism by causing the tip portion to enter below the protruding portion of the groove 115 a of the rail 115. By engaging the engagement fitting 125 with the groove 115a of the rail 115 in this manner, the lifting of the wheel 113 is suppressed, and as a result, the door body 111 is prevented from falling.

Further, in Patent Document 1 and Patent Document 2, for example, a fall prevention tool constituted by a pin is provided on the door body, and a receptacle that engages with the fall prevention tool and guides the fall prevention tool in a retaining state. It is disclosed that it is provided on the ground or foundation concrete, thereby preventing the door body from toppling over.
JP-A-9-41852 Japanese Patent Laid-Open No. 11-141253

  However, the conventional fall prevention device described above is premised on laying when newly constructing a gate, and is not considered to be retrofitted to an existing gate. Therefore, when a fall prevention device is added to an existing gate, it is necessary to repair from the foundation, and a large collection work is required.

  Further, particularly in a cold region, when the temperature is below freezing, the engagement structure portion of the fall prevention device may freeze due to water that has entered the fall prevention device. If the engaging structure portion freezes, the door body cannot be opened and closed. This is particularly noticeable when a grooved rail is used. Even when there is snow, it is necessary to perform snow removal and snow melting work so that the door can be moved.

  In order to solve such problems due to icing and snow accumulation, as shown in FIG. 6, it is conceivable to embed a heater wire 131 in the entire foundation concrete and heat the entire moving area of the door body. However, this method increases running costs such as installation costs and electricity costs. In addition, when such a heater wire is applied to an existing gate, a large-scale repair work is involved.

  The present invention has been made in view of the above-described conventional problems, and the fall prevention device that can be easily installed even on an existing gate, the gate provided with the fall prevention device, and the fall prevention device The main purpose is to provide a construction method.

  In addition to the above object, the present invention can further prevent the door body from moving due to freezing or snow accumulation with a simple configuration, a fall prevention device, a gate provided with the fall prevention device, and a method for constructing the fall prevention device. The second object is to provide the above.

  In order to achieve the above object, the overturn prevention device of the present invention is a gate overturn prevention device that has a moving means on a leg portion of a door body and opens and closes a frontage when the moving means moves on a foundation. The cover member is installed along the movement path of the moving means with a gap from the foundation, and the engaging member is fixed to the leg portion by partially entering the gap.

  The gate of the present invention includes a door that opens and closes the frontage by moving on the foundation, a moving means provided on the leg of the door for moving the door on the foundation, A cover member is installed along the movement path of the means with a gap from the foundation, and an engagement member is fixed to the leg part with a part entering the gap.

In the fall prevention device and the gate door of the present invention configured as described above, the cover member is installed on the foundation, the engagement member is fixed to the leg portion of the door body, and a part of the engagement member is arranged between the cover member and the foundation. Therefore, the vertical movement of the door body is restricted, and the door body is prevented from overturning. Furthermore, since the heating means along the moving path of the moving means is arranged, icing fall prevention device can be prevented even in environments where the temperature is below freezing.

  A heater can be used as the heating means. When the foundation has a rail for guiding the moving means, the heating means and the cover member are arranged adjacent to the rail and along the rail. Further, a lower plate that accommodates the heating means and forms the gap may be disposed along the rail on the foundation, and in this case, the rail on the rail side of the lower plate may be disposed. The part is preferably in contact with the rail. Thereby, the heat from the heating means can be efficiently transferred from the lower plate to the rail.

The fall prevention device construction method of the present invention is a fall prevention device construction method for a gate door that has a moving means at the leg of the door body and opens and closes the frontage when the moving means moves on the foundation. And a step of installing a cover member on the foundation with a gap between the foundation and along the movement path of the means for movement, and a part of the leg portion entering the gap to be engaged. Fixing the member. Further, on a base, further that have a step of installing the heating means along the movement path of the transfer means.

  As described above, in the construction method of the overturn prevention device of the present invention, all the constituent members are installed on the foundation. Therefore, whether installing a new gate with a fall prevention device or retrofitting a fall prevention device to an existing gate, the fall prevention device can be installed with minimal modifications or minimal modifications. Can be constructed.

  According to the present invention, it is possible to prevent the door body from falling with an extremely simple configuration in which the cover member is installed on the foundation and the engaging member is fixed to the leg portion of the gate door. Moreover, since these structures are installed on the foundation, the construction can be performed on the existing gate with simple and minimal work. Furthermore, by adding a heating means, it is possible to prevent the freezing of the overturning prevention device and to open and close the door body even in a cold region.

  Next, embodiments of the present invention will be described with reference to the drawings.

  1A and 1B are views of a gate according to an embodiment of the present invention, where FIG. 1A is a plan view and FIG. 1B is a front view. The gate 1 of the present embodiment includes two parallel rails 15 laid on a foundation 2 made of concrete slab or ground, and a plurality of doors that open and close the frontage by moving on the rails 15. 11. This gate 1 is a double door sliding door, and adjacent door bodies 11 are connected to each other so as to freely enter and exit in the frontage direction. Each door body 11 has a leg portion 12 including a wheel 13 that is a moving means for moving the door body 11 along the rail 15, and the door is moved by moving the wheel 13 along the rail. The body 11 is opened and closed. Each leg 12 is arranged so as to straddle two rails 15, and two wheels 13 are provided on each leg 12 corresponding to the two rails 15.

  At both ends in the frontage direction, a pair of stoppers 16a and 16b projecting from the foundation 2 are provided between the two rails 15 at intervals in the frontage direction. Each stopper 16a, 16b has a sufficient height to contact the leg portion 12 of the door body 11, and the leg portions 12 of the two door bodies 11 positioned at both ends in the frontage direction of each door body 11. The movement range of the door body 11 is restricted by the movement range of the door body 11 being restricted by the stoppers 16a and 16b.

  Furthermore, the gate 1 of the present embodiment includes two fall prevention devices 20 for preventing the door body 11 from falling due to strong winds or the like. Each fall prevention device 20 is disposed adjacent to and along the rail 15, and has a length extending over the entire length of the rail 15.

  Below, the fall prevention device 20 is demonstrated with reference to FIG.

  The fall prevention device 20 is provided on the foundation 2, and includes a lower plate 23, a cover plate 22, a heater 21 laid between the lower plate 23 and the cover plate 22, and an engagement member 25 as main components. To do.

  The lower plate 23 is composed of one or a plurality of plate members so as to have a length over the entire length of the rail 15 as a whole, and is installed directly on the foundation 2 in parallel with the longitudinal direction of the rail 15. A cover plate 22 that covers the heater 21 is installed on the lower plate 23 via a spacer 24. Similarly to the lower plate 23, the cover plate 22 is composed of one or a plurality of plate members so as to have a length extending over the entire length of the rail 15 as a whole. By providing the spacer 24 between the lower plate 23 and the cover plate 22, the cover plate 22 is held at a distance from the lower plate 23, and the heater 21 is disposed between the cover plate 22 and the lower plate 23. Is done. In particular, in the present embodiment, the spacers 24 are arranged in two rows at intervals in the entrance / exit direction of the gate, and the heaters 21 are arranged in a space surrounded by the cover plate 22, the lower plate 23, and the spacer 24. ing.

  The cover plate 22 is inclined toward the lower plate 23, i.e., the foundation 2, so that the outer edge (left side in the figure) of the cover plate 22 has no step with the foundation 2. Further, at the inner edge of the cover plate 22 on the rail 15 side (the right side in the drawing), the gap 27 between the lower plate 23 and the cover plate 22 opens at the edge on the rail 15 side. Is formed. The lower plate 23 and the cover plate 22 are fixed to the foundation 2 by anchor bolts that penetrate through them and have their tips penetrated into the foundation 2. As a result, the heater 21 is also held between the lower plate 23 and the cover plate 22.

  The heater 21 is an electric heater and is installed along the longitudinal direction of the lower plate 23. The length of the heater 21 is not particularly limited, but in order to effectively use the heat from the heater 21, the length over the entire length of the rail 15 or a length close thereto is desirable.

  The lower plate 23, the cover plate 22 and the anchor bolt 26 described above are preferably made of a material having corrosion resistance and good thermal conductivity. In this embodiment, stainless steel, particularly SUS304, is used as such a material.

  On the other hand, the rail 15 is a mountain-shaped steel material and is laid with its top portion protruding from the foundation 2. The wheel 13 traveling on the rail 15 has a V-groove outer peripheral surface that matches the shape of the top of the rail 15. Thus, the wheel 13 can travel on the rail 15 without being detached from the rail 15.

  The above-described engaging member 25 that constitutes a part of the fall prevention device 20 is fixed to the side surface of the leg portion 12 on which the wheel 13 is provided on the cover plate 22 side. The engaging member 25 is an L-shaped metal fitting whose lower end is bent toward the cover plate 22, and the bent tip portion 25 a extends in the horizontal direction to the gap 27 between the lower plate 23 and the cover plate 22. The vehicle enters without contact.

  As described above, a plate member (cover plate 22) is provided on the foundation 2 via the foundation 2 and the gap 27, and the member attached to the leg portion 12 of the door body 11 (see FIG. 1) in the gap 27. When the front end portion 25a of the combined member 25 enters, the front end portion 25a of the engagement member 25 comes into contact with the lower surface of the cover plate 22 when the wheel 13 is about to rise from the rail 15, and the front end of the engagement member 25 The upward movement of the portion 25 a is restricted by the cover plate 22. Thereby, the lifting of the wheel 13 from the rail 15 is suppressed, and as a result, the door body 11 is prevented from falling.

  Here, in this embodiment, the fall prevention device 20 is provided for each rail 15, and each prevents the wheel 13 from being lifted. However, the tip 25a of the engagement member 25 is restricted not only upward but also downward by the cover plate 22 and the lower plate 23.

  For example, in the state shown in FIG. 2, when the door body 11 is tilted counterclockwise around the contact portion between the wheel 13 and the rail 15 so as to move the tip 25 a of the engagement member 25 downward. Even so, the falling of the door body 11 in this direction is prevented by the front end portion 25 a of the engaging member 25 hitting the lower plate 23. Even when the lower plate 23 does not exist below the distal end portion 25a of the engaging member 25, the distal end portion 25a of the engaging member 25 collides with the foundation 2, and as a result, the same.

  From the above, even if the fall prevention device 20 is provided only on one rail 15 side, the fall prevention function can be achieved. However, in order to more reliably prevent the door body 11 from toppling over, it is preferable to provide a tipping prevention device 20 for each rail 15.

  The distance L between the front end portion 25a of the engagement member 25 and the cover plate 22 is set so that the engagement member 25 does not come off the cover plate 22 when the wheel 13 is lifted from the rail 15. Thus, the dimensions are set as appropriate. Furthermore, when the fall prevention device 20 is provided only on one rail 15 side, the center of gravity of the door body 11 comes from the contact portion between the wheel 13 and the rail 15 when the door body 11 falls to the fall prevention device 20 side. Before moving to the fall prevention device 20 side, the length of the distal end portion 25a of the engagement member 25 and the distance from the lower plate 23 are appropriately set so that the distal end portion 25a of the engagement member 25 contacts the lower plate 23. Is set.

  Further, the fall prevention device 20 incorporates a heater 21 as described above. Thereby, the heat from the heater 21 heats the lower plate 23 and the cover plate 22, and is transmitted to the foundation 2 through the lower plate 23 and the anchor bolt 26, and further transmitted from the foundation 2 to the rail 15. Thereby, since the freezing of the fall prevention device 20 and the rail 15 is prevented, the opening / closing operation of the door body 11 (see FIG. 1) can be performed without problems even when the temperature falls below freezing point in winter. Further, even when there is snow, the snow around the fall prevention device 20 is melted by the fall prevention device 20, so that there is no problem in the opening / closing operation of the door body 11.

  As described above, according to the present embodiment, in addition to preventing the door body 11 from overturning, freezing of the movable part can be prevented. At this time, in order to use the heat of the heater 21 more effectively, it is preferable to install the lower plate 23 in contact with the rail 15 as shown in FIG. Thereby, the heat of the lower plate 23 heated by the heater 21 can be directly transmitted to the rail 15.

  Furthermore, the fall prevention device 20 sequentially installs the lower plate 23, the heater 21, the cover plate 22, etc. on the foundation 2 on which the rail 15 is laid, and the engaging member 25 on the leg portion 12 of the door body 11. After making the foundation 2 simply by attaching it, it can be installed with simple and minimal work without changing the foundation 2.

  That is, since each member constituting the fall prevention device 20 is present on the foundation 2 except for the anchor bolt 26 for fixing to the foundation 2, the fall prevention device 20 is newly provided for the gate 1 (FIG. Not only when 1) is installed, but also when retrofitting to an existing gate, it can be easily installed without significant renovation work. Therefore, the fall prevention device 20 can be installed at a low cost. Further, if the anchor bolt 26 is removed, the cover plate 22 can be removed, so that when the heater 21 breaks down, the maintenance and replacement of the heater 21 can be easily performed.

  Here, the heater 21 will be described in detail. In the present embodiment, the type of the heater 21 is not particularly limited. However, considering that the heater 21 is used outdoors, heat is not always generated with a constant output, but the output can be changed according to the ambient temperature. However, it is preferable because power can be used efficiently. For this purpose, for example, a heater 21 as shown in FIG. 3 can be used. The heater 21 shown in FIG. 3 self-controls the output in accordance with the ambient temperature, and includes two conductors 31 arranged in parallel with a space between each other, and a heating resistor formed in a strip shape covering them. And a body 32. The heating resistor 32 is a mixture of a conductive crosslinked carbon and a radioactive cross-linked polymer that is an insulator, whereby an infinite number of parallel circuits are continuously formed between the two conductive wires 31 over the entire length of the heating resistor 32. Is done. The heating resistor 32 is electrically and mechanically protected by an insulating coating 33 made of polyolefin resin or fluorine resin, and the outer side thereof is covered by an outer coating 35 made of resin via a ground 34 which is a copper braid. Protected.

  With the above configuration, when a voltage is applied between the two conductors 31, the radiation cross-linked polymer of the heating resistor 32 contracts and the conductive carbon bonds become dense in the portion where the heater 21 is cooled. As a result, the resistance value decreases, current flows easily, and the output increases. That is, the amount of heat generated by the heating resistor 32 increases. On the other hand, in the portion where the heater 21 is hot, the radioactive cross-linked polymer expands and the conductive carbon bond becomes rough. As a result, the resistance value increases, current becomes difficult to flow, and the output decreases. That is, the amount of heat generated by the heating resistor 32 is reduced. As described above, the heater 21 self-controls the output according to the ambient temperature.

  As the heater 21 for controlling the output according to the ambient temperature, a general heating wire can be used in combination with a temperature sensor or a control circuit.

  As mentioned above, although typical embodiment of this invention was described, this invention is not limited to embodiment mentioned above, A various change is possible within the range of the technical idea of this invention.

  For example, in the above-described embodiment, the case where the two fall prevention devices 20 are installed outside the rail 15 is shown. However, the single fall prevention device 20 is placed between the pair of wheels 13, that is, the two rails 15. It can also be installed between. In this case, the engaging member 25 is attached to the inside of the wheel 13, but may be attached to the wheels 13 on both sides or may be attached to only one side. When the engaging member 25 is attached to the wheels 13 on both sides, the cover plate 22 has a shape in which a gap 27 into which the distal end portion 25a of the engaging member 25 enters is formed on both sides in the width direction.

  As a heating means, if it can heat the fall prevention apparatus itself, it will not be limited to what utilizes electricity. Examples of the heating means that uses energy other than electricity include those using a boiler device, that is, those in which piping for circulating hot water from the boiler is routed under the cover plate 22.

  Moreover, as a form of the door body 11, if it has the leg part 12 which contact | connects the foundation 2, and the moving means provided in the leg part 12 opens and closes a frontage by moving on the foundation 2, Arbitrary door bodies, such as not only the sliding door type mentioned above but the telescopic type using a link mechanism, are applicable to the present invention. The opening / closing direction of the door body 11 is not limited to linear movement in the frontage direction, and may be opened / closed by rotating around the vertical axis. Also in this case, the fall prevention device 20 is installed along the movement path of the means for moving the leg portion 12.

  On the other hand, for the rail 15, the mountain-shaped rail 15 is used in the above-described embodiment, but, for example, a rail laid so that the upper surface is flat and is substantially flush with the upper surface of the foundation 2 is used. You can also. This rail can be replaced with the rail 15 shown in FIG. 2, but such a rail is intended to eliminate the step in the foundation 2. As shown in FIG. 4, it is preferable to configure the fall prevention device 50.

  In the fall prevention device 50 shown in FIG. 4, the foundation 2 has a recess that accommodates a part of the configuration of the fall prevention device 50, and a rail 45 is laid corresponding to the recess. The rail 45 has a crank-shaped cross section, its lower horizontal portion 45a and rising portion 45b are in close contact with the bottom and side surfaces of the recess, respectively, and the upper surface of the upper horizontal portion 45c is substantially flush with the upper surface of the foundation 2. It will be laid. The wheel 43 of the door body travels on the upper horizontal portion 45 c of the rail 45.

  A cover plate 52 is installed on the lower horizontal portion 45 a of the rail 45 via a spacer 54. Therefore, the cover plate 52 is installed at a distance from the lower horizontal portion 45a. As is clear from this, in the example shown in FIG. 4, the rail 45 also serves as the lower plate 23 in FIG. 2. The upper surface of the cover plate 52 is substantially flush with the upper surface of the foundation 2.

  A heater 51 is installed between the lower horizontal portion 45 a and the cover plate 52. As the heater 51, a heater having self-controllability such as that shown in FIG. 3 can be preferably used, but not limited thereto, the various heating means described above can be used.

  On the other hand, an engagement member 55 is fixed to a side surface of the leg portion of the door body on which the wheel 43 is provided on the cover plate 52 side. The engaging member 55 is an L-shaped metal fitting whose front end is bent toward the cover plate 52, and the bent front end enters under the cover plate 52.

  According to the above configuration, the overturn prevention device 50 can be configured to be substantially flat with respect to the foundation 2. According to the configuration shown in FIG. 4, it is necessary to form a recess in the base 2 for accommodating the heater 51, but in practice, a groove is formed in the base 2, and then each component is formed in this groove. Since it is only necessary to install the elements, even when the fall prevention device 50 is retrofitted to the existing gate, the repair to the foundation 2 is minimal, compared to the case where the heater is embedded in the foundation 2, No major renovation work is required. Even when a gate with a fall prevention device is newly constructed, the fall prevention device 50 can be installed after the foundation work including the laying of the rail 45 is completed. Therefore, the fall prevention device 50 can be easily installed. Can do.

  In the configuration shown in FIG. 4, the rail 45 is configured to also serve as the lower plate 23 in FIG. 2, and thus the heater 51 can be effectively heated. However, these may be composed of separate members, or may be configured without a portion corresponding to the lower plate 23.

  By the way, in the above-described embodiment, the foundation has been described on the assumption that the rail for guiding the movement of the wheel is laid. However, the rail may be provided as necessary, and the wheel travels directly on the foundation. It may be a thing. Further, the means for moving the door body is not limited to the wheel, and may be a guide member, for example.

  In the above-described embodiment, the example in which the heating unit is disposed below the cover member has been described. May be arranged. When the heating means is provided on the upper portion of the cover member, it is preferable that a concave portion is formed on the upper surface of the cover member so that a convex portion is not formed by the heating means, and the heating means is disposed in the concave portion. Furthermore, although the above-described embodiment has been described as including a heating unit, the heating unit can be omitted when it is not intended for use in a cold region and there is no risk of icing.

It is a figure of the gate by one Embodiment of this invention, (a) is a top view, (b) shows a front view. It is sectional drawing in the wheel vicinity of the one side for showing the structure of the fall prevention apparatus shown in FIG. It is a figure which shows the structure of the heater used suitably for this invention. It is sectional drawing of the other example of the fall prevention apparatus by this invention. It is sectional drawing of the conventional fall prevention apparatus. It is a schematic diagram when a heater wire is embedded in the foundation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gate door 2 Base 11 Door body 12 Leg 13, 43 Wheel 15, 45 Rail 20, 50 Fall prevention device 21, 51 Heater 22, 52 Cover plate 23 Lower plate 24, 54 Spacer 25, 55 Engagement member 27 Crevice

Claims (11)

There is a device for moving the gate leg, and the device for preventing overturning of the gate that opens and closes the frontage by moving the moving device on the foundation,
A cover member installed with a gap between the foundation along the movement path of the means for moving;
An engaging member that is fixed to the leg by allowing a part to enter the gap ;
And a heating means disposed along a movement path of the moving means on the foundation . The foundation includes a rail for guiding the means for movement;
The fall prevention device according to claim 1, wherein the cover member is disposed adjacent to the rail and along the rail. The overturn prevention device according to claim 1 or 2 , wherein the cover member is provided so as to cover the heating means. A device for preventing a gate from falling over, having a moving means at a leg portion of the door body, and opening and closing the frontage by moving the moving means on the foundation while being guided by a rail provided on the foundation,
A cover member installed adjacent to the rail, along the rail, and with a gap between the foundation;
An engaging member that is fixed to the leg by allowing a part to enter the gap;
Heating means disposed on the foundation along a movement path of the means for movement;
Wherein are arranged along the rail on the foundation, between said cover member, accommodating the heating means and having a, a lower plate forming the gap,
Overturning prevention device edge of the rail side of the lower plate that are in contact with the rail.   The fall prevention device according to claim 4, wherein the rail also serves as the lower plate. A door body that opens and closes the frontage by moving on the foundation;
A moving means for moving the door on the foundation, provided on a leg of the door;
A cover member installed with a gap between the foundation along the movement path of the means for moving;
An engaging member that is fixed to the leg by allowing a part to enter the gap ;
Heating means disposed on the foundation along a movement path of the moving means . A rail laid on the foundation for guiding the means for movement;
The gate according to claim 6 , wherein the cover member is disposed adjacent to the rail and along the rail. The gate according to claim 6 or 7 , wherein the cover member is provided so as to cover the heating means. A door body that opens and closes the frontage by moving on the foundation;
A moving means for moving the door body on the foundation provided on a leg of the door body, the moving means guided by a rail laid on the foundation;
A cover member installed adjacent to the rail, along the rail, and with a gap between the foundation;
An engaging member that is fixed to the leg by allowing a part to enter the gap;
Heating means disposed on the foundation along a movement path of the means for movement;
Wherein are arranged along the rail on the foundation, between said cover member, accommodating the heating means and having a, a lower plate forming the gap,
Gate door edge of the rail side of the lower plate that are in contact with the rail. The gate according to claim 9 , wherein the rail also serves as the lower plate. It is a construction method of a fall prevention device for a gate door that has a moving means on the leg of the door body, and the moving means moves on the foundation to open and close the frontage door,
On the foundation, a step of installing a cover member with a gap between the foundation and along the movement path of the means for movement;
A step of causing the leg portion to partially enter the gap and fixing the engaging member ;
And a step of installing heating means along the movement path of the means for movement on the foundation .

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