JP3131802B2 - Descending elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a descending elevator used for constructing an underground floor at a construction site by using a reverse striking method or for constructing an underground tank.

[0002]

2. Description of the Related Art Conventionally, when the construction of an underground portion such as a site using a reverse hitting method or an underground tank construction site gradually descends as it progresses, it is used for carrying in and out of materials and elevating workers. It is also necessary for the two-span type long-span construction elevator to extend downward as the construction descends, so that the elevator transporter descends to a predetermined work position. This two-story type elevator for long-span construction, that is, this descending elevator capable of carrying in and out of the basement floor, is a pair of masts connected to each other in the same manner as an elevator used on the ground. Is provided from the elevator mast and the elevator carrier supported by the elevator mast and ascending and descending along the elevator mast, so that the elevator carrier can be lowered to the predetermined work position as described above as the construction progresses. A new mast is hung from the ground and added to the lower end of the elevator mast. Thus, by extending the elevator mast downward, the descending amount of the elevator carriage is extended.

[0003]

However, a new mast cannot be added unless the depth of one mast from the lower end of the already connected elevator mast is greater than one mast.
For this reason, there is a problem that it is not possible to finely set the lowermost position of the elevator carrier corresponding to the work position,
Further, there is a problem that an elevating type scaffolding device for mast taking-in / mounting work is required separately from the elevator carrying machine in order to add a new mast.

In view of the above circumstances, the present invention has been made to make the height of the lower end portion of the elevator mast finely correspond to the progress of the construction, and to provide a large-scale device such as a lifting type scaffolding device when adding the mast. An object of the present invention is to make it possible not to use the mast, to set the lowermost position of the elevator car in detail, and to easily add a mast.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and increases the amount of downward descent with the progress of construction of a basement floor from the above-ground portion. an elevator, extends capable provided sequentially replenishing the rail, like that is vertically movably supported by the basement
A pair of guide rails disposed opposite in state, the guide
Located on the ground floor corresponding to each rail, the guide
Both guide rails are engaged with the rack provided on the rail side.
A pair of drop device for synchronously lifting, the guide rail
A mast is sequentially added from above the seat at the lower end of the guide rail so as to be extendable along the guide rail.
A pair of elevator mast is supported Lumpur, the pair
And an elevator carrying device that moves up and down along the elevator mast.

[0006]

In the present invention, the operation of the descent device causes the guide rail to move up and down, and the movement of the guide rail causes the entire elevator (elevator mast, elevator carry) to move up and down. In order to extend the guide rail and the elevator mast when lowering the lowest position of the elevator car, a new rail is added to the upper end of the guide rail on the ground side, and the new mast is added to the upper end of the elevator mast. When the guide rail is lowered by the operation of the lowering device, the entire elevator is lowered, and the lowest position of the elevator transporter is lowered. On the other hand, at the time of disassembly, the guide rail is raised by the operation of the descending device, and the guide rail and the elevator mast can be sequentially disassembled from the above-ground portion. The respective components of the guide rail and the elevator mast, that is, the rail and the mast do not need to be separate bodies, but can be integrally formed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail based on one embodiment shown in FIGS. In the figure, reference numeral 1 denotes a descending elevator, and the descending elevator 1 is disposed along the constructed basement floor A in the vertical direction, and is extended downward as the basement work position progresses (falls). Things. The descending elevator 1, as shown in FIG. 1, a pair of guide rails 2 which are opposed, are located downstairs aboveground side, the guide corresponding to the guide rails 2
A pair of lowering devices (motors) for raising and lowering the rails 2 and 2
3, 3; a pair of elevator masts 4, 4 supported by the guide rails 2, 2;
4 and an elevator carrier 5 which moves up and down along the elevator mast 4.

As shown in FIG. 2, each of the guide rails 2 has a plurality of rails 2b formed by connecting a plurality of rails 2a in a vertical direction, and is arranged in parallel with each other. Rack 2 on the horizontal material (not shown)
c is attached and passes up and down. The guide rail 2 is provided so as to be able to move up and down with respect to the basement floor A, and a guide frame 6 installed and fixed to each basement floor A has a roller 7, and the roller 7 is connected to the rail body 2b. The guide rail 2 can be guided up and down by the guide frame 6 by sliding contact with the guide rail 2. The guide frame 6 on the predetermined floor is formed in a large size, and the lowering device 3 is disposed therein. The pinion 3a of the lowering device 3 meshes with the rack 2c, and the guide device 6 is guided by the operation of the lowering device 3. The rail 2 is provided so as to move up and down. FIG. 2 shows only one guide rail and a structure for guiding this guide rail up and down, but the other is the same, and synchronization is established when the guide rail is moved up and down.

The elevator mast 4 is a structure in which the top on the side of the elevator carrier 5 is formed as a rack and has a triangular shape when viewed from above, and is supported along the guide rail 2. And this elevator mast 4 is also a guide rail 2
A plurality of masts 4a are vertically connected in the same manner as described above. A mast base 4b is arranged on a receiver 2d located at the lower end of the guide rail 2, and the elevator mast 4 is assembled thereon. I have. In this manner, the elevator masts 4 face each other while being supported by the guide rails 2, and the elevator transporter 5 located therebetween is
It is provided so as to be moved up and down along the elevator mast 4 by the operation of the elevating means provided on the elevator carrying side.

[0010] The descending elevator 1 having the above structure can lower the lowest position of the elevator carriage as the work proceeds in the underground. That is, since the elevator mast 4 itself is supported by the guide rail 2, lowering the guide rail 2 by the operation of the lowering device 3 lowers the lowest position. If there is no margin at the upper end of the guide rail 2, a new rail is added to the upper end of the guide rail 2, and a new rail is added to the upper end of the elevator mast 4. The mast is added, and the guide rail 2 is lowered, so that the lift of the elevator from the lowest position corresponding to the underground work position to the above-ground portion is secured. Addition of the elevator mast and addition of the guide rails can be performed on the ground,
The task is very simple.

When the elevator 1 is dismantled near the completion of the construction, it is performed in the reverse of the above-described descending operation. In addition to removing the rails, the mast is also removed from the upper end side of the elevator mast 4 on the ground, and then the elevator carrier 5 is removed, and then the guide frame 6 on each floor may be dismantled.

In the above embodiment, the rail and the mast have been described as being separate from each other, but it is also possible to integrate both of them in advance.

[0013]

As described above, according to the present invention,
The descending elevator is configured to extend downward in the downward direction with the progress of construction of the basement floor sequentially from the ground part side, and is provided so as to be able to extend by adding rails sequentially, Opposed to the floor while being supported so that it can be moved up and down
A pair of guide rails to be placed, and the guide rails
Located on the ground floor corresponding to each, on the guide rail side
The two guide rails are raised synchronously by meshing with the rack
A pair of lowering devices for lowering and a lower end portion of the guide rail
The mast is sequentially extended from the seat , and can be extended along the guide rail, and is supported by the guide rail.
It is characterized in that it comprises a pair of elevator masts to be, and an elevator carriage which moves up and down along the pair of elevator <br/> Tamasuto. As a result, it is possible to lower the lowest point of the elevator car by lowering the guide rails while making fine adjustments according to the progress of construction, and to add the rail to the guide rail and the mast to the elevator mast. Can be performed on the ground side, and the operation can be simplified and performed safely. And since the elevator mast is attached to the guide rail, it is possible to take an intermediate joint from the elevator mast to the guide rail, and to reinforce the joint of the elevator mast and a new for the elevator mast This has the effect of excelling in practicality, such as eliminating the need for reinforcement.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a descending elevator according to the present invention as viewed from above.

FIG. 2 is an explanatory view showing a guide rail in one embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lowering elevator 2 ... Guide rail 2a ... Rail 2c ... Rack 3 ... Lowering device 4 ... Elevator mast 4a ... Mast 5 ... Elevator carrier 6 ... Guide frame 7 ... Roller

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B66B ^7/ 00-9/193

Claims (1)

(57) [Claims] 1. An elevator in which the amount of downward descent is increased with the progress of construction of a basement floor in order from the above-ground part side, and rails are sequentially added to each other so as to be extendable. A pair of guide rails that are disposed opposite to each other while being supported in a vertically movable manner, and are located on the ground floor corresponding to each of the guide rails;
The two guides engage with the rack provided on the guide rail side.
A pair of lowering devices for raising and lowering the rails in synchronization with each other, and a mast is sequentially added from a seat at a lower end portion of the guide rail so that the mast can be extended along the guide rail.
A descending elevator comprising: a pair of elevator masts supported by the guide rails; and an elevator transporter that moves up and down along the pair of elevator masts.