JPH04121976U - Construction elevator carriage door opening/closing device - Google Patents

Abstract

(57) [Summary] [Purpose] This is an opening/closing device for the carriage door in a construction elevator. [Configuration] The door 20 arranged on the front side of the carrier 10 is the upper door 21.
and a lower door 22, which are interlocked by ropes 24 that are interconnected along door guide rails 23 provided on both sides of the carrier frame 12, and a lower door 22 provided at the top of the carrier frame 12. The pinion 27 driven by the drive unit 26 for opening and closing the door is engaged with the rack 28' of the operating rod 28 attached to the upper door 21, and when the upper door 21 is raised, the lower door 22 is lowered and opened. be done. The footboard 35, which is pivoted to the edge of the cargo bed floor, is attached to the lower door.
When the lower door 22 is raised and lowered, the lower door 22 is folded forward so as to lean against the inside of the lower door 22, and when the door is closed, it is erected. [Effect] When the door is opened and closed using power, the treadle is automatically spanned between the carrier and the work floor.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an opening/closing device for a carriage door of a construction elevator.

0002

[Conventional technology]

For elevators that share people and cargo, which are mainly used at construction sites, general Unlike passenger elevators, the door can be opened and closed over the entire width of the carrier. What is required is what is required. Moreover, the door attached to this carrier is pushed outward from the floor of the carrier's bed. In the case of a type that can be opened, the building side or the cargo receiving and discharging side (the building frame It may be difficult to work with so-called double door doors, which are pushed open in the opposite direction. cannot be adopted due to the relationship with other structures. In addition, the loading platform floor of the carrier and the construction on the building side. Steps are placed between the work floor and the work floor to allow safe loading and unloading of equipment, etc. Therefore, it is also necessary to raise and lower the footboard. Therefore, the loading platform of the carrier is usually A door that can be opened and closed vertically along the outer edge of the cage (or cage) is used.

0003 The vertically opening/closing type door attached to this carrier allows one item to be moved vertically. The door is divided into two parts (top and bottom) and one of the doors is moved upward. There is a known method in which when the door is moved, the other door automatically moves downward and opens. There is. For example, Japanese Patent Application Laid-open No. 63-282092 and Japanese Patent Application Laid-Open No. This is disclosed in, for example, Japanese Patent No. -75590.

0004

[Problem that the idea aims to solve]

Most of the doors of the above-mentioned carriers are opened and closed manually by the carrier occupant. The sea urchin is turning. In addition, a counterweight was installed to make it easier to move the door plate. It is connected to the door plate with a rope and can be opened and closed with a light operating force.

[0005] However, even if the door is structured so that it can be opened and closed easily by hand, the door cannot be opened completely. After that, lower the footboard attached to the carrier side to the work floor side, and align it with the platform floor of the carrier. It is necessary to cover the gap between the material side and the work floor. For that purpose, the above-mentioned known In the case of Japanese Unexamined Patent Publication No. 63-282092, the footboard is raised and lowered manually. In the case disclosed in Japanese Patent Application Laid-Open No. 2-75590, the door is opened and closed manually. The equivalent of a footboard is raised and lowered by a separate hydraulic cylinder.

[0006] In this way, in the conventional technology, the door and the footboard are operated individually. Therefore, unless the transfer device is mounted on a carrier as in the above-mentioned known technology, This is often inconvenient for work. For example, if you are not using a transfer device, The door cannot be closed until after the board is erected. In addition, the tread is operated by power. If the door is opened and closed according to the procedure, only the footboard will open and fall. If you do so, the door may be damaged.

[0007] This invention solves the problems mentioned above, and after the carrier has been moved to the required work floor, When loading and unloading cargo between the carrier side and the work floor, open/close the door and move the footboard. The opening/closing of the carrier door is performed in conjunction with the raising and lowering of the door by the door opening/closing drive device. The purpose is to provide a

[0008]

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the present invention is a tower erected at a required height. In a construction elevator where the carrier is raised and lowered along the front of the The door to be installed is divided into upper and lower parts, and an opening/closing drive body is attached to the upper door. When the opening/closing drive unit, which is mounted on the upper side, pulls up the upper door, the lower door opens. The upper and lower doors are connected to each other with cables on both sides so that they can be lowered, and the base is attached to the floor edge of the carrier platform. The end-pivoted tread is configured to collapse forward when the lower door is lowered. It is something that was given.

[0009] In the present invention, the door opening/closing drive body is located at a suitable location on the upper door, preferably at the center. A pinion is attached to the output shaft of the drive machine, which is mounted on the top of the carrier. A method in which the door is opened and closed by meshing with the rack, or a method in which the door is opened and closed by engaging the Connect the cable with one end connected to the lower part or both sides to the output of the drive machine mounted on the upper part of the carrier. It is preferable that the door be opened and closed by rotating the winding drum attached to the power shaft. stomach.

0010

[Effect]

According to the carrier door opening/closing device of the present invention having such a configuration, the carrier reaches the target work floor. To open the door after landing, start the drive mounted on the top of the carrier and move the opening/closing drive (e.g. If you operate the rack attached to the door or the cable in the lifting direction, the upper door will rise. The lower door is also lowered simultaneously. As this lower door is lowered, The footboard, whose base end is pivoted to the floor edge of the carrier loading platform, should be placed against the inside of the lower door. As the upper end of the lower door descends, it is tilted outward by its own weight, and the door is fully opened. When this happens, the footboard automatically collapses and hangs from the floor of the carrier platform to the work floor of the work floor. handed over. When closing the door, move both the upper and lower doors in the opposite direction to remove the fallen tread. The board is lifted by the lower door and returned into the carrier.

[0011]

【Example】

Hereinafter, one embodiment of the carrier door opening/closing device of the present invention will be explained with reference to the drawings. do. Figure 1 shows an example of a construction elevator equipped with the inventive carrier door opening/closing device. FIG. 2 is a plan view of FIG. 1, and FIGS. 3 to 5 are front views of a specific example. FIG. 6 is a detailed diagram showing an example of a drive unit, and FIG. 6 is a schematic diagram showing a door drive operation mode; 7 is a diagram showing the relationship between the footboard attached to the platform floor of the carrier and the door. these In the figure, the carrier door opening/closing device 1 of the present invention has at least the lifting frame of the carrier 10. A door 20 provided on the opposite side to the side 11 is provided so as to be operable.

0012 The door 20 is divided into two parts, an upper door 21 and a lower door 22. Both ends are engaged with the door guide rails 23, 23 attached to the door, allowing it to move freely in the vertical direction. It is set in. The upper door 21 and the lower door 22 are connected to the door guide rails 23 and 23. The upper door 21 and lower door 22 open and close vertically in synchronization with each other by ropes 24. connected in such a way that it can be done. Therefore, the door guide rails 23, 23 It is attached by extending upward and downward from both the upper and lower sides of the frame, and when removed, it protrudes. The front part is foldable or removable. Door guide rail 23 , 23 are the ropes connecting the upper and lower doors 21, 22. 24This is a guiding pulley.

[0013] The door 20 configured in this way is located near the door 20 at the top of the carrier frame 12. A drive machine 26 for opening and closing the door is installed at the position, and as shown in FIGS. The upper The rack 28' of the operating rod 28 fixed in the vertical direction at the center of the side door 21 is engaged, and this drive The rotation of the pinion 27 by the machine 26 raises and lowers the upper door 21 via the rack 28'. being done. Note that the meshing between the pinion 27 and rack 28' teeth is maintained. , guide rollers 29, 29 are in contact with the back of the operating rod 28 equipped with a rack 28', and the door 20 to ensure smooth opening and closing. Reference numeral 15 in the figure is a support stand for the drive machine 26; 30 is a guide roller mounting bracket.

[0014] Further, on the edge of the loading platform floor 14 of the carrier 10 on the side where the door 20 is attached, a foot plate 35 is attached so that the base end is connected to the loading platform floor. It is arranged with 14 pivot points. This footboard 35 is connected to the carrier 10 and each part of a building, for example. Materials can be safely loaded and unloaded to and from work floor A provided on the work floor. When the door 20 is closed, the solid line b in Fig. 7 shows the required length. As shown, the tip is in contact with the vertical member 22' of the door structure and is provided so as to lean against it. It is.

[0015] In addition, on both sides of the lower part of the lifting frame 11, for example, gripping devices 40 of a known structure are installed on the left and right sides. On the other hand, it is attached perpendicularly to the guide rail 3 of tower 2, and is When loading and unloading work with the container 10 stopped, the flange of the guide rail 3 3' and fix the carrier 10 to the tower 2. ing. In addition, the doors 20A and 20B provided on the left and right sides of the carrier 10 in the diagram are also adjusted as necessary. Accordingly, an opening/closing device similar to that of the front door 20 can be attached.

[0016] Next, to explain the operation of the device of the present invention, the carrier 10 is moved up and down to the target work floor. In order to load and unload on the work floor, first operate the gripping device 40 at the landing position. Then, the carrier 10 is fixed to the tower 2. After that, start the door opening/closing device 1, By operating the driver 26 on the top of the carrier frame 12, the pinion 27 and rack 28 The upper door 21 is pulled up by the meshing drive with '. Then the lower door 22 is Since it is connected to the upper door 21 by the pulley 24, the lower door 22 is synchronized with the upper door 21. and be lowered. At this time, the footboard 35 provided on the loading platform floor 14 is also attached to the lower door 22. Since the lower door 22 is hanging down, the upper end of the lower door 22 is lowered as shown by c in FIG. As a result, the tip of the footboard 35, which was in an upright position, fell forward under its own weight, causing the lower door to collapse. 22 The upper end is moved below the loading platform floor 14 of the carrier, which is represented by d in Figure 7. The footboard 35 is in contact with the work floor A and spans over the gap between the carrier 10 and the work floor A. , you can work safely.

[0017] In this way, the door 20 is in a state where its upper door 21 and lower door 22 are fully opened in the vertical direction. In this case, the front of the carrier 10 is fully opened, so even bulky items can be easily received and removed. I can do it. Of course, the carrier 10 is moved by the gripping device 40 as described above. Since it is fixed to the tower 2, even if heavy items are brought onto the loading platform 14 of the carrier 10, , or even if the load is greatly reduced by lowering it from the platform floor 14, it will not move vertically while stopped. There is no need to move, and work can be done in a safe state.

[0018] At the stop position of the carrier 10, there is a The operation lever 28 is removed via the rack 28' by reversing the drive 26. The attached upper door 21 is lowered, and the lower door is connected to this upper door 21 by a rope 24. 22 also begins its upward movement and the door closes. When raising this lower door 22, the carrier 10 The upper tread 35 moves in the opposite manner to that described above, and is also moved by the upper end of the lower door 22. 35 The tip is scooped up as it is, and when the door is closed, it is erected. Do it like this After the door is closed, if the gripping device 40 is released from the tower 2, the transport can be carried out. The vessel 10 can be raised and lowered. In addition, when opening and closing the doors 20A or 20B on both the left and right sides of the carrier 10, In this case, it can be opened and closed in the same manner as the door 20 described above.

[0019]

[Effect of the idea]

According to the present invention, when the carrier is moved to the target work floor and the door is opened and closed, the movement If you use force to open and close the door vertically, the footboard attached to the floor of the carrier can also be moved separately. It automatically lowers and stands up when the door is opened and closed without requiring any force, making it easy to use. You can work safely and with ease.

[Brief explanation of drawings]

FIG. 1 is a front view of a specific example of a construction elevator equipped with a carrier door opening/closing device of the present invention.

FIG. 2 is a partially cutaway plan view of the carriage of the construction elevator shown in FIG. 1;

FIG. 3 is a front view showing the drive section of the door opening/closing device.

FIG. 4 is a partially cutaway plan view of FIG. 3;

FIG. 5 is a right side view of FIG. 3;

FIG. 6 is a schematic diagram showing a driving operation mode of the carrier door.

FIG. 7 is a diagram showing the relationship between the footboard attached to the floor of the carrier and the door.

[Explanation of symbols]

1 Carriage door opening/closing device 2 Tower 3 Guide rail 10 Transporter 11 Lifting frame 12 Carriage frame 14 Loading bed floor 20 Door 20A, 20B side door 21 Upper door 22 Lower door 22’ Vertical member 23 Door guide rail 24 Rope 25 Pulley 26 Drive machine 26’ Output shaft of drive machine 27 pinion 28 Operation lever 28’ rack 29 Guide roller 35 Treadboard A work floor

Claims (3)

[Scope of utility model registration request] [Claim 1] In a construction elevator in which a carrier is raised and lowered along the front surface of a tower erected at a required height, the door provided at the floor edge of the carrier platform is divided into upper and lower halves, and the upper door An opening/closing drive body is attached, and the upper and lower doors are connected to each other by cables on both sides so that when the drive unit mounted on the upper side of the carrier pulls up the upper door, the lower door is lowered. An opening/closing device for a carriage door of a construction elevator, characterized in that a footboard whose base end is pivotally supported on the floor edge of the carriage platform is configured to be folded forward when the lower door is lowered. 2. The door opening/closing drive unit includes a rack attached to an appropriate position on the upper door, and a pinion attached to an output shaft of a drive machine mounted on the upper part of the carrier meshes with the rack to open/close the door. The opening/closing device for a carrier door of a construction elevator according to claim 1. 3. The door opening/closing driving body is configured to rotate a winding drum attached to an output shaft of a drive machine mounted on the upper part of the carrier by connecting a cable with one end connected to the lower center or both lower parts of the upper door. Claim 1, wherein the door is opened and closed at
An opening/closing device for the carriage door of a construction elevator as described in .