JPH0748633Y2 - Outside door device for construction elevator - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to an outer door device provided at a hoisting portion for materials and the like to a construction elevator installed at a construction site.

[Background of device]

Conventionally, at a construction site where a high-rise building is built, a construction elevator is used to carry materials and personnel to a work floor. On each floor under construction facing the hoistway of this construction elevator (including a long-span elevator), an elevator door is installed on each floor under construction for safety, except when the passenger is getting on or off when landing. Has been done. Since this outer door device is usually temporarily installed, it cannot be made as strong as a permanent facility structurally, and the floor surface for receiving and delivering materials and the like between the elevator carrier and the work floor. When moving a small carrier from the hoistway side to the building side or vice versa,
If there is a protrusion on the floor surface, smooth operation cannot be performed, so it is not possible to lay a guide rail for opening and closing the door in the outer door device on the floor. In addition, when the equipment transported by the elevator is taken into the destination floor, it is mounted on a small carrier and carried to the working floor, so the maximum height for passing through the outer door can be set within the installation height of the outer door. In order to make the height as high as possible, it is necessary to raise the beam member of the door support portion, and the door support structure becomes unreasonable. Further, it is also an important matter for the rationalization of the work to reduce the space accompanying the movement of the door as much as possible when opening and closing the door so as not to hinder other work. In addition to these matters, safety fences, etc., installed at work places at high places must have certain requirements according to the Occupational Safety and Health Regulations, etc. There are also restrictions on the aperture ratio of the surface to be covered. Furthermore, in the case of relatively low-rise buildings, it is less affected by the weather conditions, but in the case of high-rise / super-high-rise buildings, there is a risk that strong winds may wind up the doors, so the outside of the building under construction. Since it is often installed and adapted to an elevator, its stability and safety must be satisfied, and there are problems to be solved in order to satisfy many conditions regarding its configuration.

[Problems to be solved by the device]

In this way, the outer door device, which is installed facing the hypothetical elevator hoistway, is easy to install, presents a state that does not hinder the transportation of materials, etc. at the time of use, and can cope with the effects of strong winds, etc. It is required that the product be stable and stable, secure, and easy to handle. Therefore, an object of the present invention is to provide an outer door device for a construction elevator having a structure that can satisfy such requirements.

[Means for Solving the Problems]

An outer door device for a construction elevator of the present invention configured to achieve such an object is a guide rail that is suspended between a pair of upright columns on the lower surface at the top of these columns. And an auxiliary guide rail fixed in parallel to the hanging guide rail between the side surfaces of the columns at an appropriate dimension below the horizontal beam. A plurality of doors are provided between the door support and the both columns and are foldable by being guided by the hanging guide rails, and the doors are supported and guided by the hanging guide rails at their upper ends via main guide rollers. The supporting rods of the book are hung vertically, and a door plate having a foldable and through hole of a predetermined height is attached between these supporting rods to form a series of doors, and the upper part of each supporting rod is Reinforced links arranged to intersect each other Auxiliary guide rollers for holding the auxiliary guide rails in the front-rear direction are attached to upper side surfaces of the support rods, respectively, and endlessly stretched via pulleys on both columns at the upper portion of the outer door support. The movable leading edge supporting rod of the door is attached to a rope driven by a winch. In addition, the above-mentioned unit in the present invention is designed so that the power supply circuit to the prime mover can be operated when the carrier of the elevator reaches the landing position and the landing detection switch attached to the structure side at the position is closed. Is preferably incorporated into the electrical control circuit of

[Action]

The outer door device for a construction elevator according to the present invention constructed as described above is used by standing on the floor surface of a required floor at a position facing the hoistway of the elevator. The door is kept closed during operation of the elevator, and the passengers can be closed to ensure safety. Even if a strong wind is received in this closed state, the door plates are connected to each other by the reinforcing links that cross the supporting rods at the top, and are received by the auxiliary guide rails via the auxiliary guide rollers, and the door plate itself. Has a through hole,
The door is kept closed without being blown by the wind. The stability of the door plate is increased by enlarging the through holes within the allowable range to increase the air permeability. When opening the door, if the elevator car reaches the floor where the outer door device is installed and lands on the floor, for example, the landing detection switch, which is previously arranged on the building side, is operated by this car to support the outer door. The winch attached to the body is operable.Therefore, by driving this winch to operate the endlessly stretched rope in the door-opening direction, the rope is used to move the support rod at the end that is the movable end. The doors are moved and the other supporting rods are sequentially moved through the crossed reinforcing links connected to the movable rods at the extreme ends, so that the door can be automatically opened. When the door is opened, the door is a foldable door plate, and therefore, by projecting to the building side in advance, there is no problem because it does not project to the carrier side of the elevator. When the door is closed, it can be closed by reversely operating the rope with the winch. Also, with the door completely closed, for example, the limit switch attached to the support operates to enable operation of the elevator carriage, and when the carriage leaves the landing position, the winch power circuit opens. As a result, the door cannot be opened and closed, and safety is maintained.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an outer door device for a construction elevator according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the outer door device in a state in which the opening is closed by the door plate, the outer door support 1 framed in a gate shape, and the frame of the outer door support 1. It is composed of a door 10 which is laterally moved and folded inside, and a door opening / closing drive mechanism 30 attached to the outer door support 1. As shown in FIGS. 1 to 4, the outer door support 1 has a pair of stanchions 2, 2 ′ which are arranged in an upright state at required intervals so that they can be disassembled by a cross beam 3 between the upper ends inside. Then, a hanging guide rail 4 having a C-shaped cross section with a slit 4'provided over the entire length is attached to the lower surface of the horizontal beam 3, and the lower side of the horizontal beam 3 is appropriately dimensioned. An auxiliary guide rail 5 is attached to the side surface of the elevator ascending / descending side in parallel with the hanging guide rail 4 so as to be disassembled. The door 10 is a suspension guide rail 4 provided along the lower surface of the transverse beam 3 between both columns 2 and 2'of the outer door support 1, and a main guide roller 12 is provided at the top for suspension. A plurality of support rods 11 are hung from the main guide rollers 12 of the support rods 11, and both ends of the support rods 11 are connected by hinges 14 so that a door plate 13 that can be folded in half at an intermediate portion has a predetermined height. (Approx. 1800 mm) is attached. The door plate 13 has a large number of through holes 13 'such as a punching plate and is formed of a breathable, fire-resistant thin plate. In addition, the support rod 11 for each suspension
Is a reinforcing link 15 that crosses at the top, as shown.
Are connected to each other at pin 16. In addition, at the connecting portion with the supporting rod 11, these reinforcing links 15 are connected by a pin 18 to a sliding piece 17 whose lower connecting portion is slidable in a long groove provided in the supporting rod 11. In addition, each support rod 11
A bifurcated bracket 20 having an open upper side is attached to a side surface of the outer door support 1 at a position corresponding to the auxiliary guide rail 5 of the outer door support 1, and the auxiliary guide roller attached to the bracket 20 is attached.
The auxiliary guide rails 5 and 21 are held in contact with each other so as to be sandwiched between them (in the front view), and the door 10 can be opened and closed through the support rod 11 so as not to swing in the front-rear direction. . By setting the mounting position of the bracket 20 with respect to the support rod 11 to be lower than the position of the auxiliary guide rail 5, a large distance from the hanging position can be secured, and the steadying effect of the door 10 can be enhanced. Moreover, the height dimension from the work floor to the auxiliary guide rails 5 is increased so as not to hinder the work, which is effective. The auxiliary guide rail 5 has a structure in which the bracket 20 supporting the steady rest auxiliary guide roller 21 is open at the upper side, so that the intermediate portion of the auxiliary guide rail 5 is supported by the support piece 6 on the outer door. By connecting to the lateral beam 3 of the body 1, the intermediate portion can be maintained in a stable state without bending. Further, since the bracket 20 for supporting the auxiliary guide roller is opened to the upper side, the door 10 as shown in FIG.
After temporarily assembling, the auxiliary guide rail 5 can be inserted from above so as to be interposed between both auxiliary guide rollers 21 and 21 attached to each bracket 20, and both ends can be attached to the columns 2 and 2'to assemble, It saves extra space for assembly and improves workability. Of course, this is the same as the reverse operation when disassembling. The opening / closing drive mechanism 30 of the door 10 is an electric endless winch 31 attached to one of the columns 2'of the outer door support 1 and a drum 31 'of the endless winch 31 and is stretched so as to be driven. It consists of a rope 32 that has been cut. This rope
32 is a support rod 11 ′ at the movable end of the support rods 11 of the door 10.
The upper ends of the two columns are connected to each other via mounting brackets 33, and the pulleys 34 attached to the upper ends of one of the columns 2 are connected to the other column 2 '.
The intermediate portion is wound around the drum 31 'of the endless winch 31 via the pulleys 35, 35' attached to the upper end of the to operate. The pulleys 34, 35, 35 'face the building side of the outer door support 1 and are supported by support fittings 36, 36', respectively. The endless winch 31 includes two mounting brackets 37 formed so as to hold both the column 2'and the fixed side of the support rod 11 on a base 38 fixed along the column 2 '. It is mounted and its electric motor is associated with the electric control system of the elevator so that it is energized only when an elevator carrier (not shown) is landed. Therefore, the pillar 2 facing the elevator hoistway side
A push button switch 8 for opening and closing the door is attached to a mounting seat 7 provided at a proper position, and a worker boarded in the transporter operates the push button switch 8 to open and close the door 10, and the building side (work It is designed so that the door cannot be opened from the floor side) to maintain safety. Further, a limit switch 40 for confirming the closed state is attached to the upper side of the column 2, and a contact 42 for contacting the limit switch 40 is attached to the upper part of the support rod 11 'at the movable end portion. . Note that, as in the case of a general elevator, accident prevention during operation is achieved by electrically associating with the elevator control unit so that the carrier cannot move up and down unless the door is confirmed to be closed by the operation of the limit switch 40. Reference numeral 9 in the figure denotes a drop rod, which can be operated on the carrier side of the elevator. By inserting the drop rod 9 into a locking hole that is buried in the work floor, the door 10 is lowered in the middle lower part. It is fixed in position so that safety measures can be taken in the event of a gust. The outer door device of the present embodiment configured as described above is used by installing a unified structure for each work floor along the hoistway of the construction elevator. Regarding the members and parts of each part that can be configured, it can be disassembled into a state that is easy to transport,
In addition, it is possible to install by sequentially mounting to a high place according to the progress of the work by having a structure in which it is assembled by bolt fastening or the like. Also, when dismantling the elevator, it is easy to disassemble and remove it, and it can be transported to another place and reinstalled. At the time of use, if the boarding operator operates the push button switch 8 from the carrier side to drive the entry winch 31 in the door opening direction, the support rod 11 ′ at the movable end connected to the rope 32 moves, This movable end support rod 11 'and reinforcing link
Each supporting rod 11 connected by 15 is moved by being guided by the hanging guide rail 4 by suspending the main guide roller 12 provided at the top.
At the same time, the reinforcing links 15 in a crossed state connecting the adjacent support rods 11 to each other are sliding pieces 17 at the lower connecting portion.
Since they are connected with pin 18 via
The gap between the support rods 11 is reduced by the movement displacement of the support rods.
The door plates 13 attached to 11 are folded at the mounting hinge portions and opened. The width of the opening when this door is opened depends on the convenience of work.
The size obtained by subtracting the total width of the widths of all supporting rods 11 and 11 'from the size between 2'is the maximum, and the support rods can be arbitrarily opened within the range up to this maximum. At this time, the folded door plate 13 is folded toward the building and protrudes, as shown by the chain double-dashed line in FIG. 2, and does not protrude toward the elevator hoistway, but contacts the elevator transporter or the like. There is no danger to When the door is closed, the endless winch 31 is reversed so that the elevator carrier can be moved up and down only when the contact switch 42 attached to the support rod 11 'at the movable end is closed by operating the limit switch 40. In this way, the door 10 can be automatically opened / closed by driving the endless winch 31 of the door opening / closing drive mechanism 30, so that the worker does not have to open and close the door 10 by moving the door 10 in an unstable posture on the carrier. It's good, so you can work safely and reasonably. In the closed state, when an external force such as wind acts on the door plate 13, the door plate 13 receives the wind pressure applied to the entire surface of the door plate 13.
Since a myriad of through holes 13 'are provided in this, a part of the wind blows through the through holes 13' and is reduced, and even if residual wind pressure is received, the connection of each support rod 11 by the reinforcing link 15 It is received by the holding function of the auxiliary guide rollers 21, 21 with respect to the auxiliary guide rail 5, and the door 10 does not swing greatly. Also, during times when there is no work, such as at night during a storm,
By locking the middle lower end of the door 10 to the floor surface with the drop bar 9, it can be held more safely. Of course, the work may be performed by moving the elevator carrier and sequentially raising and lowering the drop rod 9 from the outside. The endless winch 31 in this embodiment corresponds to the winch of the present invention.

[Effect of device]

As described above, the outer door device of the present invention is constructed so that it can be disassembled, transported and assembled without special equipment when it is installed on the work floor along the hoistway of the construction elevator. Therefore, it is easy to handle, and the door is restricted so that it can be opened and closed only when the carrier is on the floor when in use. Therefore, the same level of safety as with the permanently installed elevator can be ensured. Further, the work can be carried out smoothly without the height limitation when loading and unloading the materials and the like between the carrier and the work floor. Further, even if the door is affected by wind or the like, even though the distance from the hanging portion to the auxiliary guide rail is relatively small, the auxiliary guide roller for steadying the auxiliary guide rail is provided. By arranging each support rod below in an allowable range, it can receive external force reasonably and stably hold it smoothly, and even if the door becomes heavy for safety, It can be opened and closed smoothly and can be used safely.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of an outer door device for a construction elevator according to the present invention, FIG. 2 is a plan view, FIG. 3 is an enlarged cross-sectional view of an essential part, and FIG. 4 is a door plate mounting part. 5 and 5 are views showing a manner of mounting the auxiliary guide rails, and FIG. 6 is an enlarged plan view of the mounting portion of the endless winch. 1 ... Outer door support, 2, 2 '... Strut 3 ... Horizontal beam, 4 ... Suspending guide rail 5 ... Auxiliary guide rail, 6 ... Supporting piece 7 ... Mounting seat, 8 ... Push button Switch 9 …… Drop bar, 10 …… Door 11 …… Support rod, 11 ′ …… Support rod at movable end 12 …… Main guide roller, 13 …… Door plate 13 ′ …… Through hole, 14 …… Hinge 15 …… Reinforcing link, 16,18 …… Pin 17 …… Sliding piece, 20 …… Bracket 21 …… Auxiliary guide roller, 30 …… Door opening / closing drive mechanism 31 …… Endless winch (winch), 32 …… Rope 34, 35, 35 '…… Pulley, 40 …… Limit switch 42 …… Contact for limit switch

Claims (2)

[Scope of utility model registration request] 1. A pair of upright-arranged columns are connected by a horizontal beam having a hanging guide rail on the lower surface at the uppermost portion of these columns, and the lower side is appropriately dimensioned from the horizontal beam. Between the side walls of both columns, an auxiliary guide rail is fixed in parallel with the hanging guide rails, and is supported between the two columns by an outer door support that is framed in a gate shape, and is guided by the hanging guide rails. A plurality of support rods whose upper ends are supported and guided by the main guide rollers via the main guide rollers, and the doors are foldable from the lower end to each of the support rods. A foldable door plate having a predetermined height and having a through hole is attached to form a series of doors, and the upper portions of the supporting rods are connected to each other by reinforcing links arranged in a cross manner, and the supporting rods are connected to each other. Attach the auxiliary guide rails to the upper side of the An auxiliary guide roller for gripping is attached respectively, and an upper end of the outer door supporting member is endlessly stretched via both pulleys on both columns and a winch driven rope is provided with a supporting rod at the movable end of the door. Installed, an outer door device for construction elevators, characterized in that 2. The winch is arranged so that the power supply circuit to the prime mover can be operated when the carrier of the elevator reaches the landing position and the landing detection switch attached to the structure side at the position is closed. The outer door device for a construction elevator according to claim 1, which is incorporated in the electric control circuit of the above.