JP2007276918A - Elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dispense with a guide rail by synchronously extending/contracting three lifting/lowering devices without being entangled with one another. <P>SOLUTION: This elevator 1 is provided with a lifting/lowering table 2 liftable/lowerable in an inner side surrounded by a lifting/lowering wall 11 and with three telescopic cylinders 3 which are lifting/lowering devices for lifting/lowering the lifting/lowering table 2. The telescopic cylinder 3 comprises a plurality of stages of cylinders with four bar-shaped cylinders 4, 5, 6, 7 having different radii, and each of the cylinders 4, 5, 6, 7 has a nested structure and can be slid in the longitudinal direction. Cap members 15, 16, 17 for fixing the cylinders having the same radius of the three telescopic cylinders 3 to one another and regulating and aligning the height of the cylinders are provided. Due to this structure, the parallel state of the three telescopic cylinders 3 can be maintained, and the telescopic cylinders 3 can be synchronized with one another and extended/contracted without being twisted together. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator.

  A conventional elevator is described in Patent Document 1, for example. This elevator is provided with a pantograph type lifting device and a guide rail extending in the vertical direction between the back of the car on which a person or an object rides and the inner wall of the hoistway, and the pantograph type lifting device expands and contracts. A car formed so as to project from the back is moved up and down to raise and lower the car up and down. Further, by providing guide means that can move along the guide rails on the back of the car, the car moves up and down along the guide rails. As a result, the car can be raised and lowered without tilting or rotating in the hoistway.

JP 2003-212453 A

  However, in an elevator in which a car rises on a floor where no hoistway is provided or an elevator in which the inside of the hoistway can be seen, a guide rail cannot be provided. There is a problem that the position of the door of the car shifts from the position of the door of the hoistway due to the device being twisted and the car tilting or rotating.

  The present invention has been made to solve such problems, and an object thereof is to provide an elevator that does not require a guide rail.

An elevator according to the present invention includes a lift that can be raised and lowered, and at least three lifts for raising and lowering the lift, each of the lifts being provided in a nested manner and having a plurality of cylinders with different radii And a cap member that restrains the cylinders in the same stage of the three lifting devices to be fixed to each other and to be aligned with each other by lifting and lowering devices that can extend and contract by sliding each of the cylinders in the longitudinal direction. With.
The lifting platform may include a car.
The lifting device may be a telescoping cylinder.

  According to the present invention, there are provided a plurality of cylinders with different radii provided in a nested manner, and at least three lifting devices that can be expanded and contracted by sliding in the longitudinal direction of each of the cylinders, and the same three lifting devices By providing a cap member that fixes the cylinders of the steps and regulates the heights of the cylinders so that the heights of the three cylinders are aligned, the three lifting devices extend and retract in synchronization without being twisted with each other. It can be raised and lowered without tilting or rotating the table. Thereby, a guide rail can be made unnecessary.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, the elevator 1 is an elevator that can travel between a first floor 9, a second floor 12, and a top floor 14. A cylindrical transparent elevating wall 11 communicating from the first floor 9 to the uppermost floor 14 is provided. The first floor 9 portion and the second floor 12 portion of the elevating wall 11 are respectively provided with an opening / closing door 10 and 13 is provided.

  The elevator 1 includes a cylindrical lifting platform 2 that can move up and down in a hoistway surrounded by a lifting wall 11, and three telescope cylinders 3 that are lifting devices for raising and lowering the lifting platform 2. The elevator 2 is provided with a car 20 formed of transparent tempered glass thereon, thereby having a cylindrical shape as a whole and a space in which a person or an object can be placed. The telescoping cylinder 3 is composed of a plurality of cylinders having four rod-shaped cylinders 4, 5, 6, and 7 having different radii. Is slidable. Thereby, the telescoping cylinder 3 can be expanded and contracted. Here, each of the cylinders 4, 5, 6, and 7 constitutes one stage. Note that a hydraulic unit (not shown) is connected to each telescope cylinder 3, and the telescopic cylinder 3 expands and contracts at a constant speed by adjusting the hydraulic pressure in the cylinders 4, 5, 6, and 7. It is supposed to be. That is, the telescope cylinder 3 is a constant velocity telescope cylinder.

  The telescoping cylinder 3 is provided such that the lower end of the cylinder 4 is connected to a mounting table 19 provided on the bottom 8a of the pit 8 and extends vertically upward so that the upper end of the cylinder 7 contacts the lifting platform 2 from below. It has been. The three telescopic cylinders 3 are provided in parallel to each other so as to form an equilateral triangle when viewed from above. Three cylinders 4 having the same radius are fixed by a cap member 15 made of metal at an upper end portion 4a (see FIG. 2).

  As shown in FIG. 2, in the three cylinders 4, the upper end portion 4a has a larger radius than the other portions. These upper end portions 4a are respectively inserted into three holes 15a formed in the cap member, and a disc-shaped fastener 25 having a concentric hole in the center is inserted into the hole so that the cylinder 5 is inserted into the cap. It arrange | positions on the upper surface of the member 15, the fastener 25 and the upper end part 4a are fastened with the some volt | bolt 26, and the fastener 25 and the cap member 15 are fastened with the some volt | bolt 27. Thus, the three cylinders 4 are fixed to the cap member 15 so as to maintain a state parallel to each other.

  As shown in FIG. 3, when the cap member 15 is viewed from above (the direction of arrow A in FIG. 2), the three cylinders 4 are arranged to form an equilateral triangle. Since the cap member 15 fixes the three cylinders 4 so as to maintain this state, the rigidity of the three cylinders 4 as a whole is improved. Each of the three cylinders 4 is fixed to the cap member 15 so that the tip end portion 4a (see FIG. 2) is inserted into the hole 15a of the cap member 15. It regulates to make the height of the tip of the same. In each fastener 25, the plurality of bolts 26 and 27 are arranged so as to draw circles at equal intervals around the cylinder 5.

  As shown in FIG. 1, the other cylinders 5 and 6 are similarly provided with metallic cap members 16 and 17 at their upper end portions, and are fixed so as to maintain a parallel state with each other. The shape of the equilateral triangle is maintained when viewed from above. That is, each of the cap members 15, 16, and 17 fixes the same stage cylinder of each telescope cylinder 3. Therefore, the shapes of the cap members 16 and 17 are the same as those of the cap member 15 shown in FIG. 3 except that their sizes and the sizes of the holes corresponding to the holes 15a of the cap member 15 are different. As a result, the cap members 16 and 17 are also regulated to improve the rigidity of the three combinations of the cylinders 5 and 6 as a whole and to align the heights of the three tips of the cylinders. Since the three cylinders 7 are in contact with the lower part of the lifting platform 2 so that their respective heights are aligned, even if there is no cap member, as in the other cylinders 4, 5, 6, The overall rigidity of the three combinations is improved, and the heights of the tips of the three cylinders 7 are regulated to be uniform.

  The lifting platform 2 is provided with a cylindrical outer cover 21 extending downward, and the three telescoping cylinders 3 are positioned inside the outer cover 21. The cap member 17 is provided with a cylindrical outer cover 22 extending downward, and the three telescoping cylinders 3 are positioned inside the outer cover 22. A cylindrical outer cover 23 slidable in the vertical direction with respect to the outer cover 22 is provided below the outer cover 22. The outer cover 22 slides in the vertical direction with respect to the outer cover 21.

Next, the operation of the elevator according to this embodiment will be described.
As shown in FIG. 1, when each telescope cylinder 3 is in the most contracted state, the lifting platform 2 is located on the first floor 9. At this time, the door 10 is opened, and a person on the first floor 9 can get into the space inside the car 20. After a person gets into the space inside the car 20, a hydraulic unit (not shown) adjusts the hydraulic pressure in the cylinders 4, 5, 6, and 7, so that the cylinders 5, 6, 7 sequentially slide vertically upward. Each telescopic cylinder 3 extends vertically upward. First, each of the three cylinders 5 slides vertically upward, but a slight error usually occurs between them. However, the cap member 16 is regulated so that the heights of the tips of the three cylinders 5 are aligned, and the error is eliminated. As a result, the three cylinders 5 are slid vertically upward by the cap member 16 so as to align the heights of their tips. Next, the three cylinders 6 are similarly slid vertically upward by the cap member 17 so that the heights of their tips are aligned. Subsequently, since the tips of the three cylinders 7 are in contact with the lifting platform 2 from below, the three cylinders 7 slide vertically upward so that the heights of the tips are aligned. As a result, the three telescoping cylinders 3 are synchronized and extend vertically upward. Further, the cap members 15, 16, and 17 improve the rigidity of the three telescope cylinders 3 as a whole and prevent them from twisting each other. As a result, the elevator 2 rises in the hoistway without tilting or rotating. Furthermore, since the cylinders 5, 6 and 7 slide at a constant speed, the telescoping cylinder 3 extends at a constant speed, so that the lifting platform 2 rises in the hoistway at a constant speed.

When each telescope cylinder 3 is in the most extended state, the car 20 protrudes from the top floor 14 as shown in FIG. As a result, a transparent tempered glass car 20 suddenly appears on the uppermost floor 14 where nothing is provided as equipment for the elevator 1.
Further, below the elevator 2, the gap between the cap members 15, 16, and 17 is increased, so that the lower end portion of the outer cover 21 and the upper end portion of the outer cover 22 are slightly overlapped, and the outer cover 23 is The outer cover 22 is moved downward. As a result, the three telescopic cylinders 3 are covered with the outer covers 21, 22 and 23 from the top floor 14 to the first floor 9. In this embodiment, since the elevating wall 11 is transparent, the hoistway inside the elevating wall 11 can be seen from the first floor 9 and the second floor 12, but three telescopic cylinders are provided by the outer covers 21, 22, 23. 3 disappears from the first floor 9 and the second floor 12. In addition, since no guide rail is provided in the hoistway, even when the hoisting platform 2 is located on the first floor 9 (FIG. 1), there is nothing in the hoistway from the first floor 9 and the second floor 12. Since there seems to be no equipment, the scenery on the first floor 9 and the second floor 12 is not impaired.

  As described above, the cylinder 4 is composed of a plurality of cylinders provided with four cylinders 4, 5, 6, 7 having different radii provided in a nested manner, and each of the cylinders 4, 5, 6, 7 slides in the longitudinal direction. By fixing at least three telescopic cylinders 3 that can be expanded and contracted and cylinders having the same radius of the three telescopic cylinders 3, that is, cylinders at the same stage, so that the heights of the respective cylinders are aligned. By providing the cap members 15, 16, and 17 to be regulated, the three telescope cylinders 3 are maintained parallel to each other and are expanded and contracted in synchronization without being twisted. The table 2 can be raised and lowered without tilting or rotating. Thereby, a guide rail can be made unnecessary as an installation of the elevator 1. In particular, in the case of an elevator in which the inside of the hoistway can be seen from each floor, it is possible to prevent the scenery on each floor from being damaged.

  In this embodiment, three telescope cylinders 3 are used, but the number is not limited to three. Any number of three or more may be used. Further, when there are three telescope cylinders, the telescope cylinders are not limited to be arranged so as to form equilateral triangles when viewed from above, but may be arranged in any way. The telescoping cylinder 3 includes four cylinders 4, 5, 6, and 7, but is not limited to four. A telescope cylinder having an appropriate number of cylinders can be used according to the distance by which the lift 2 is raised. Moreover, it is not limited to each telescope cylinder being the same. Even if the radii of the telescope cylinders are different, a plurality of different types of telescope cylinders may be used as long as the number of stages and the length of the cylinders in the stages are the same. Further, the telescopic cylinder 3 is expanded and contracted by adjusting the hydraulic pressure in the cylinders 4, 5, 6, and 7. However, the present invention is not limited to the hydraulic pressure. The telescope cylinder 3 may be expanded and contracted using air pressure, water pressure, screws, or the like.

  In this embodiment, the car 20 has a cylindrical shape made of transparent tempered glass, but it may not be transparent, and may be a car of any shape. Further, although the elevator 2 is provided with the car 20, the elevator 2 may be provided without the car 20. Such a modification is shown in FIG. In FIG. 4, the same reference numerals as those in FIGS. 1 and 3 are the same or similar components, and thus detailed description thereof is omitted. FIG. 4 shows the elevator 30 in the case where the car 20 and the top floor 14 are not provided as compared with FIG. Similarly to the elevator 1, even if there is no guide rail, the elevator 2 suddenly appears on the second floor 12 where nothing is provided as equipment for the elevator 30, and the elevator 2 is placed above the second floor 12. Can be positioned. Thereby, for example, it is possible to perform an effect in which the woman 31 riding on the lifting platform 2 suddenly appears above the second floor 12.

1 is an overall view of an elevator according to an embodiment of the present invention. It is a side view of the cap member used for the elevator which concerns on this embodiment. It is a top view when the cap member used for the elevator which concerns on this embodiment is seen from the direction of arrow A of FIG. It is a general view of another state of the elevator according to this embodiment. It is a general view of the modification of the elevator which concerns on this embodiment.

Explanation of symbols

  1,30 elevators, 2 elevators, 3 telescope cylinders (elevating devices), 4, 5, 6, 7 cylinders, 15, 16, 17 cap members, 20 cars.

Claims (3)

A lifting platform that can be moved up and down;
At least three lifting devices for lifting the lifting platform, each of the lifting devices includes a plurality of cylinders with different radii provided in a nested manner, and each of the cylinders slides in the longitudinal direction. Elevating device that can be extended and contracted,
An elevator provided with a cap member that fixes cylinders at the same stage of the three lifting devices and regulates the heights of the cylinders so as to be aligned with each other.   The elevator according to claim 1, wherein the lifting platform includes a car.   The elevator according to claim 1 or 2, wherein the lifting device is a telescope cylinder.

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