JP5366042B2 - Unit elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a unit type elevator capable of enhancing the efficiency of the assembling work of a steel tower unit. <P>SOLUTION: This unit type elevator 1 has a steel tower for constituting a hoistway of the elevator, a steel tower block 2 of the lowest stage divided into a plurality of pieces and arranged in a pit 6, and a plurality of steel tower units 3 and 4 arranged above the steel tower block 2 and constituting the steel tower by stacking. The steel tower block 2 is fixed with an anchor 14 in the pit 6. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a unit elevator, and more particularly to a unit elevator including a plurality of steel tower units that are constructed in a building such as a station building and constitute a hoistway.

  In recent years, along with the arrival of an aging society and the improvement of welfare, there is an increasing social demand for so-called barrier-free elevators. For example, in a highly public railway organization, climbing up and down the stairs from the ticket gate to the platform is a big barrier for elderly and disabled people, so there are many requests to install elevators at station buildings. It has become. In addition, there is an increasing demand for additional elevators in school buildings.

  Thus, in order to meet the demand for installing an elevator in a public facility, a method of adding a new elevator to an existing building is the mainstream. When adding a new elevator to an existing building, it is difficult to completely limit the daily use of the building itself during the construction period. It is desirable to finish the additional elevator work within a short period of time.

  In order to additionally install an elevator, civil engineering and construction work such as hoistway or pit construction is generally performed before installing elevator equipment. In order to shorten the construction period, the hoistway frame is constructed with a steel tower frame, and the hoistway is constructed by surrounding the steel tower frame with a steel plate panel or a building board.

  However, in recent years, unit type elevators have been put into practical use in order to further shorten the construction period. This unit type elevator divides a steel tower into a plurality of units (also called pieces), and after installing elevator parts such as guide rails, entrances and wirings, it is carried to the construction site and Each unit is stacked and assembled.

  FIG. 11 and FIG. 12 show the procedure of the conventional construction method of the steel tower unit and the centering and fixing work.

  As shown in FIG. 11 (A), in the work of constructing the lowest tower unit base 100 constituting the tower, a specialized worker for carrying heavy objects lifts the tower unit base 100 using a lifting device. The steel tower unit base 100 can be carried into the foundation pit 101 and installed. And immediately after carrying in the steel tower unit base 100, construction work is once stopped. A heavy-duty carrying-in specialist worker lifts the lowermost steel tower unit base 100 in the pit 101 to perform the centering work of the lowermost steel tower unit base 100 in the pit 101.

  When the position adjustment of the tower unit base 100 with respect to the pit 101 is completed by performing the centering work of the lowermost steel tower unit base 100, a worker who builds the building again in place of the centering worker. Is fixed in the pit 101.

  Next, as shown in FIG. 11B, the second-stage tower unit 102 is lifted by the lifting device, and the second-stage tower unit 102 is placed on the lowermost tower unit base 100 in the pit 101. Centered and positioned.

  Thereafter, as shown in FIG. 12, the third-stage tower unit 103 is lifted by the lifting device, and the third-stage tower unit 103 is centered on the second-stage tower unit 102 in the pit 101. Is positioned.

Such unit type elevators are disclosed in Patent Document 1 and Patent Document 2.
Japanese Patent Laid-Open No. 2002-3123 JP 2002-87728 A

  However, it is necessary to carry in the tower unit base 100 into the pit 101 of the foundation by carrying out the setup by a specialized worker for carrying heavy objects and lifting the tower unit base 100 by the lifting device. Then, after the tower unit base 100 is loaded into the pit 101, the tower unit base 100 needs to be centered in the pit 101. Therefore, it is necessary to prepare jigs and other jigs and tools. Needs to be done safely and quickly.

  In this way, when building a steel tower, centering and fixing work of the steel tower unit base is necessary, and of course, the unit base at the bottom of the steel tower is no exception. The unit must be centered and fixed. For this reason, useless time occurs in the personnel assignment and work process of building workers and centering workers.

  In addition, an embedded anchor for fixing the tower unit base is installed in the pit. However, if the anchor construction accuracy is poor, the anchor unit is not reworked or the tower unit base has a poor construction accuracy. On the other hand, there has been a frequent occurrence of drilling a new hole to pass the anchor.

  Furthermore, the construction work and the centering work of the bottom tower unit base are performed sequentially, so that workers of different construction types will perform combined work at the same work site, and the construction work and the core work will be performed. Care adjustment is required for the unloading work and requires carefulness.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a unit type elevator that can increase the assembly work efficiency of a steel tower unit.

A unit type elevator of the present invention includes a lowermost steel tower block installed in a pit, and a plurality of steel tower units that are installed on the steel tower block and constitute a steel tower serving as an elevator hoistway by stacking. The tower block is formed on the base plate, an upper plate arranged in parallel to the base plate, a connecting member for connecting the base plate and the upper plate, and embedded in the pit. A mounting hole for passing an anchor, and a tower joint hole formed in the upper plate for passing a fastening bolt for fastening the tower unit .

  ADVANTAGE OF THE INVENTION According to this invention, the unit type elevator which can raise the assembly operation efficiency of a steel tower unit can be provided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a view showing a preferred embodiment of a unit elevator according to the present invention and a foundation for installing the unit elevator. FIG. 2 is a perspective view showing a pit formed on the foundation, four steel tower blocks installed in the pit, and a plurality of steel tower units.

  A unit type elevator 1 shown in FIG. 1 constitutes an elevator hoistway by assembling a steel tower with a plurality of steel tower blocks. The unit type elevator 1 includes four steel tower blocks 2 that are the first stage, a steel tower unit 3 that is the second stage, and a steel tower unit 4 that is the third stage. This unit type elevator 1 is installed, for example, in a pit 6 formed on a concrete foundation 5 of a station building.

  The four steel tower blocks 2 shown in FIG. 2 are made of iron. The steel tower unit 3 is framed in a rectangular parallelepiped shape by welding an iron frame 7 and a beam member 8 in a vertical direction, a horizontal direction, and a height direction by welding or fastening with bolts. As shown in FIG. 2, the steel tower unit 3 has a suspension base 3T for suspension. The steel tower unit 4 shown in FIG. 1 is formed in a rectangular parallelepiped shape by welding a steel frame 9 and a beam member 10 in a vertical direction, a horizontal direction, and a height direction by welding or fastening with bolts, and is reinforced by a reinforcing wire 9R. Yes. The steel tower unit 4 has a suspension base 4T for suspension.

  The steel tower unit 3 and the steel tower unit 4 shown in FIG. 1 constitute a steel tower, and this steel tower constitutes a hoistway for raising and lowering the elevator car. For the tower unit 3 and the tower unit 4, illustration of elevator parts such as a guide rail for a counterweight, an entrance / exit, and electric wiring is omitted for the sake of simplicity.

  As shown in FIG. 2, the pit 6 is a rectangular space, and the pit 6 has a floor surface 6B and four side surfaces 6C and 6D. Steel tower blocks 2 are installed at the four corners of the floor surface 6B of the pit 6, respectively.

  FIG. 3 is a perspective view showing a shape example of each steel tower block 2. FIG. 4 is a plan view of the steel tower block 2. The four steel tower blocks 2 shown in FIG. 2 have the same shape.

  As shown in FIGS. 3 and 4, the steel tower block 2 includes a base plate 11, an upper plate 12, and a connecting member 13. The base plate 11 and the upper plate 12 are both square plates, for example, and the base plate 11 is fixed to the lower end portion 14 of the connecting member 13 by welding. The upper plate 12 is fixed to the upper end portion 15 of the connecting member 13 by welding. The base plate 11 and the upper plate 12 are parallel. The connecting member 13 is made by bending a plate-like member, and has side wall portions 13A, 13B, 13C, and 13D.

As shown in FIGS. 3 and 4, a circular attachment hole 15 is formed at the center position of the base plate 11. The mounting hole 15 passes the anchor 14 shown in FIG. 3 embedded in the pit 6 shown in FIG. Circular steel tower joint holes 16 are formed at the four corner positions of the upper plate 12. The steel tower joint hole 16 passes a joint bolt 17 for attaching the steel tower unit 3 shown in FIG.

  Next, a method for assembling the unit elevator 1 having the above-described configuration will be described.

  FIG. 5 shows a state before the four steel tower blocks 2 are installed at the four corner portions in the pit 6, and FIG. 6 shows a state where the four steel tower blocks 2 are installed at the four corner portions in the pit 6. Show.

  As shown in FIGS. 5 and 6, anchors 14 are installed in advance at the four corners of the floor surface 6B of the pit 6, and each anchor 14 projects from the floor surface 6B in the Z1 direction. ing. As shown in FIGS. 5 and 6, the four steel tower blocks 2 are respectively arranged at the four corners of the floor surface 6B of the pit 6 along the Z2 direction. At this time, as shown in FIG. 3, each anchor tower block 2 is temporarily fixed by passing the anchor 14 through an attachment hole 15 formed at the center position of the corresponding base 11.

  Next, as shown in FIG. 7, the laser marking device 30 is set in the pit 6, and the level of the top end 11 </ b> D of each base 11 that has already been temporarily fixed to the four corners in the pit 6, that is, the pit 6. The height from the floor surface 6B is set to a predetermined level.

  At the same time, as shown in FIG. 8, the level of each base 11 is measured by a level 38 arranged in the pit 6. And in order to obtain the level of each base 11, as shown in FIG. 8 and FIG. 9, the liner 31 is put between the lower part of the base 11 and the floor surface 6B, and the level of each tower block 2 is adjusted. To do.

  Finally, as shown in FIG. 9, the steel tower base 2 is tightened with the four nuts 35 while the nuts 35 are screwed into the anchor bolts 14 to complete the centering operation.

  Next, as shown in FIG. 2, the steel tower unit 3 is suspended by the lifting device 40 shown in FIG. 1 and placed on the four steel tower blocks 2. As a result, the steel tower unit 3 is placed on the four steel tower blocks 2, and the steel tower unit 3 performs the centering operation on the four steel tower blocks 2.

  Thereafter, the tower unit 4 is installed on the tower unit 3 in a state where the next tower unit 4 is suspended by the lifting device 40 shown in FIG. Thereby, the steel tower unit 4 is placed on the steel tower unit 3, and the steel tower unit 4 centers the steel tower unit 3 and the four steel tower blocks 2. Thus, the steel tower units 3 and 4 can be further erected sequentially on the centered steel tower block 2 without being interrupted, and can be joint-fixed.

  The unit type elevator 1 can be assembled as described above.

  The steel tower block 2 divided into four is installed in advance at the four corners of the floor 6B of the pitch 6, and after the centering work of each steel tower block 2, the steel tower unit 3 is applied to these steel tower blocks 2. Is installed and built. For this reason, it is not necessary to set up a heavy article carrying-in specialist or to carry the lowermost tower unit into the pit just for centering the lowermost tower unit as in the prior art. Since the lowermost steel tower unit is centered in the pit, preparation of jigs and other jigs can be omitted, so that the centering operation in the pit is easy and safe.

  Since the divided four steel tower blocks 2 are respectively installed at the four anchor positions in the pit 6, the steel tower blocks 2 do not interfere with each other when installed in the pit 6. After the centering work of the steel tower block 2 is finished, the steel tower units 3 and 4 to be stacked on the steel tower block 2 can be constructed after that, so that the centering work and the construction work can be divided into steps. For this reason, work adjustment is not required and complex work does not occur.

  Since the steel tower block 2 divided into four is smaller and lighter than the conventional lowermost steel tower unit, these steel tower blocks 2 are brought into the pit 6 by the operator and brought into the pit 6 by hand. It can be installed at four corner positions. Therefore, conventionally, only in order to center the bottom tower unit, a heavy load specialist specializes in bringing the bottom tower unit into the pit and centering the bottom tower unit in the pit. However, it is not necessary in the embodiment of the present invention. Furthermore, it is possible to omit the preparation of jigs and other tools for moving the bottom tower unit during the work of centering the bottom tower unit in the pit. Work is easy and safe.

  Since the tower block 2 divided into a plurality of parts is installed on the floor of the pit 6, the construction work is temporarily interrupted during the construction process as in the past, and the centering and fixing work of the lowermost steel tower unit is performed. There is no need to do it. In other words, it is not necessary to simultaneously perform the construction work of the steel tower unit and the centering work of the steel tower unit in the pit, and these two works can be performed separately, and the work becomes safe. Since a plurality of divided steel tower blocks 2 are installed in the pit, the effective space in the pit is expanded as compared with the conventional steel tower unit installed in the pit.

  As a result, the centering work of the steel tower block can be performed before the construction work of the plurality of steel tower units is started. That is, in the embodiment of the present invention, the elements constituting the steel tower installed in the pit are divided into a plurality of steel tower blocks, so that each steel tower block is compared to the conventional lowest steel tower unit. Because it can be much smaller and lighter, you can easily bring each steel tower block into the pit and install it at the four corners of the pit.

  Moreover, even if the installation accuracy of the embedded anchor 14 in the pit is insufficient, by using the divided tower block 2, each tower block 2 can be attached according to the position of the anchor 14, respectively. The steel tower blocks 2 do not interfere with each other. In other words, even if the installation accuracy of the anchor 14 is poor, the tower block 2 is securely installed in the pit 6 without the need of re-shaking the anchor or drilling new holes when the tower block 2 is centered. Can do.

  In the embodiment of the present invention, the lowermost piece of the steel tower constituting the hoistway is divided into a plurality of small blocks, so that the weight can be reduced compared to the lowermost part of the integrated object, the weight of the steel tower can be reduced, and the use of pits Wide effective space can be secured. Since the centering of the lowermost piece of the tower can be completed before the construction of the tower, the work time and man-hours for the construction can be saved.

  The unit type elevator of the present invention is a unit type elevator having a steel tower that constitutes a hoistway of the elevator, and is installed on the steel tower block, the lowest steel tower block divided into a plurality and installed in the pit. And a plurality of steel tower units that constitute the steel tower by stacking. Thereby, the assembly work efficiency of a steel tower unit can be raised.

  The tower block includes a base, an upper plate arranged in parallel to the base, and a connecting member that connects the base and the upper plate, and the base is attached for passing an anchor embedded in the pit. A hole is formed. Thereby, the anchor embedded in the pit can be reliably fixed by passing through the mounting hole of the base.

  A tower joint hole for passing a fastening bolt for fastening the tower unit is formed in the upper plate. Thereby, the steel tower unit can be reliably fastened to the upper plate by the fastening bolt.

  Steel tower blocks are installed at the four corners of the pit. Thereby, the steel tower unit can be reliably installed at the four corners of the pit.

  Since the mounting hole of the base of the steel tower block is formed at the center position of the base, the center position of the steel tower block can be reliably fixed to the foundation by one anchor of the pit.

  The unit type elevator of the present invention may be a conventional rope type or hydraulic type elevator with a machine room, or a machine room-less type elevator, but is more suitable for a machine room-less type elevator.

  By setting a template (formwork) in the pit in advance, the anchor construction accuracy can be increased. Anchors can be retrofitted not only on the floor of the pit but also on the rising side. Steel tower units can also be built on pit beams.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage.

  In the example of FIG. 1, the unit type elevator is configured by stacking the second-stage steel tower unit 3 and the third-stage steel tower unit 4, but is configured by stacking the fourth-stage steel tower unit or more. May be.

  Furthermore, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

It is a figure which shows the foundation for installing preferable embodiment of the unit type elevator of this invention. It is a perspective view which shows the pit formed in the foundation, four steel tower blocks installed in this pit, and a steel tower unit. It is a perspective view which shows the example of a shape of a steel tower block. It is a top view of a steel tower block. It is a figure which shows the state before four steel tower blocks are installed in a pit. It is a figure which shows the state in which four steel tower blocks were installed in the pit. It is a figure which shows the state which set the laser marking device in the pit. It is a figure which shows the state in which the level was set in the pit. It is a figure which shows one steel tower block in a pit, and a part of steel tower unit installed in this steel tower block. It is a perspective view which shows the state which is going to install an upper steel tower unit in a lower steel tower unit. It is a perspective view which shows a prior art example. It is a perspective view which shows a prior art example.

Explanation of symbols

1 Unit elevator 2 Multiple tower blocks (first stage)
3 Steel tower unit (second stage)
4 Steel tower unit (third stage)
5 Foundation 6 Pit 11 Base plate 12 Upper plate 13 Connecting member 15 Mounting hole 16 Tower joint hole 17 Joint bolt

Claims (3)

The lowest tower block installed in the pit ,
A plurality of steel tower units that are installed on the steel tower block and constitute a steel tower that becomes a hoistway of an elevator by stacking ,
The steel tower block is
A base plate,
An upper plate disposed parallel to the base plate;
A connecting member for connecting the base plate and the upper plate;
A mounting hole for passing an anchor formed in the base plate and embedded in the pit;
A tower joint hole for passing a fastening bolt that is formed in the upper plate and fastens the tower unit;
A unit-type elevator comprising: The unit elevator according to claim 1, wherein the steel tower block is installed at each of four corners in the pit . The unit type elevator according to claim 1 or 2, wherein the mounting hole of the base plate is formed at a central position of the base plate .

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