JPS63242899A - Elevator driving device for low building - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an elevator drive device for low-rise residential buildings, and particularly relates to an elevator drive device for low-rise residential buildings equipped with a table that is supported by a scissor-shaped link mechanism and moves up and down. .

[Prior Art] Elevator drive systems for low-rise residential buildings that have been commonly used in the past have used scissor-like link mechanisms operated by hydraulic cylinders or screw cylinders because the structure is simple and guide rails are not required. There are many.

Such a low-rise residential elevator drive device includes a base,
A table provided above the base and movable relative to the base, and a table provided between the base and the table to guide the table so that it can move up and down while maintaining a parallel relationship to the base. Expandable scissor-shaped neck! fm, and an actuating device housed in the scissor-like link mechanism to extend and retract the scissor-like link mechanism. The actuating device is usually a hydraulic cylinder or a screw cylinder.

Points to note in particular when using an elevator drive system for low-rise residential buildings are that the lift of the elevator system is sufficient at around 3 m because the number of floors in the building is relatively small, that the load of the elevator cannot be applied to the building, and that the elevator It is desirable that the power supply voltage for driving is 100V.

Among these conditions, lift and load problems have been solved even in residential elevator systems using conventional hydraulic cylinders.

[Problems to be solved by the invention However, the power supply voltage for driving the elevator is 10
There was nothing that could use 0V. In order to operate an elevator at an appropriate speed, the hydraulic pump in the case of a set of hydraulic cylinders and the electric motor in the case of a set of screw cylinders must each be driven with a certain level of power or more, and the household 1°0 Since the power source was insufficient, separate electrical work was required for a power source with a higher power than the household power source. This means that elevator installation and operation can be costly.

[Means for Solving the Problems] In order to solve such problems, the elevator driving device for low-rise residential buildings of the present invention includes a base, and an elevator that is provided above the base and is movable with respect to the base. a telescopic scissor-like link mechanism that is provided between the base and the table and that guides the table in a vertically movable manner while maintaining a parallel relationship with the base; An actuating device is attached to the scissor link mechanism to extend and retract the scissor link mechanism, and a spring device is attached to the scissor link mechanism and acts to reduce the weight of the scissor link mechanism on the actuator.

[Examples] Next, the present invention will be described along with examples of the present invention shown in the attached section.

FIG. 1 and FIG. 2 show an embodiment of the elevator driving device for low-rise residential buildings according to the present invention. In these figures, the elevator drive system for low-rise residential buildings includes a base 1 installed on the foundation of a building (not shown). A table 2 is provided, and an elevator car (not shown) is attached to this table 2. The elevator drive device for low-rise residential buildings is further provided between the base 1 and the table 2, and is arranged between the base 1 and the table 2.
It is provided with an extendable scissor-like link mechanism 3 that guides the robot movably up and down while maintaining a parallel relationship with the base 1.

Both the base 1 and the table 2 are approximately rectangular frameworks made of angle members that are bonded together. The scissor-shaped link mechanism 3 is a so-called pantograph type link in which a pair of links 4 and 5 are combined in an X shape, and the intersections are pivotally connected by a pin 6, and two are arranged in parallel to form a double X shape. This is a well-known structure. The X-shaped scissor-like links may be single-stage or multi-stage, but in the illustrated embodiment, four stages of scissor-like links are used. The lower end of one of the scissor-shaped links at the lowest stage among the four stages is pivotally connected to the base 1 by a pin 7, and the lower end of the other link is attached to the base 1 via a roller 8.
It is possible to transfer to a higher rank. The upper end of one of the scissor-like links in the top row of the four rows is attached to table 2 with bin 9.
As is well known, such a scissor-shaped link mechanism 3 can be pivoted on the base 2 by opening and closing the scissors-shaped link. 1 and the table 2 while maintaining a parallel relationship between them, the table 2 can be raised and lowered.

The elevator drive device for low-rise residential buildings is further provided with an actuating device 12 attached to the scissor-shaped link mechanism 3 to extend and retract the scissor-shaped link mechanism 3.

Although the actuating device 12 is a hydraulic cylinder in the illustrated embodiment, it may also be a screw cylinder rotated by an electric motor and having a ball screw that moves axially into and out of the cylinder. The cylinder end of the hydraulic cylinder or actuator 12 is pivoted to the link by a pin 23 at a position slightly lower than the central pivot pin of the lowest scissor link.

The plunger end of the hydraulic cylinder is pivoted by a pin 24 near the lower end of the second stage scissor link. In the illustrated embodiment, such a hydraulic cylinder 12 is
It is also provided between the scissor-shaped links of the tiers and the scissor-shaped links of the uppermost tier.

According to the present invention, the elevator drive device for low-rise residential buildings includes scissor-shaped links 8! A spring device 15 is provided which is attached to the structure 3 and acts in the direction of reducing the weight of the scissor-like link fii3 on the actuation device 12.

This spring device 15 is provided between adjacent scissor-shaped links, and a total of three spring devices 15 are used. In the illustrated embodiment, the spring arrangement 115 is a tension spring and the scissor linkage 13 is always biased by the spring arrangement 15 towards the raised position, since the spring arrangement 15 acts to bring the connected links closer together. has been done. The strength of the spring assembly W15 is such that it can support the weight of the scissor-shaped link mechanism 3 and the weight of the table 2. Preferably, when an elevator (not shown) is attached to the table 2, the spring force of the sprung mass or the spring device 15 is compensated.

By using such a spring device 15, the force acting on the output part of the actuating device 12 can be eliminated, or at least reduced, both when the elevator is raised and when it is lowered. Therefore, the work that the actuating device 12 has to do is to raise and lower only the passenger load excluding the weight of the elevator drive and the elevator car;
Extremely small. Therefore, a household 100cm power supply can be used as a power source for the actuating device, and optimum speed can be obtained with a small output drive section powered by a household power supply.

3 and 4 show another embodiment of the elevator drive system for low-rise residential buildings according to the present invention, in this example, the scissor-shaped link F
The scissor-like link 21 of the R structure 20 has three stages, and the actuating device 22
is not a hydraulic cylinder but one screw cylinder 23. Further, as shown in FIG. 4, the spring devices are spring devices 24 disposed on both sides of the screw cylinder 23, one in parallel to the screw cylinder 23.

The screw-cylinder 23 is provided in the cylinder so that the pole nut can be rotated, and a lead screw threadedly engaged with the pole nut moves in and out of the cylinder according to the rotation of the pole nut, and any well-known type may be used. . The spring device 24 is a compression spring housed in two cylindrical bodies that can be expanded and contracted in a telescoping manner.

In this embodiment as well, the strength of the spring device 24 is such that it can support the weight of the scissor-shaped link mechanism 3 and the weight of the table 2. With the elevator car (not shown) attached to table 2, the amount of sprung mold is the same as that of spring device 2.
It is desirable that the spring force be offset by the spring force of 4.

In order to use such a spring device 24, FIGS.
An effect similar to that of the embodiment shown in the figure is obtained and therefore the actuating device 1! i! The work that 22 has to do is to raise and lower only the passenger load excluding the weight of the elevator drive and the elevator car, which is extremely small.

Therefore, as a power source for the actuating device 22, a household 100V power source is used.
Power is available, and optimal speeds can be achieved with a compact output drive powered by household power.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an elevator drive device for a low-rise residential building according to the present invention, FIG. 2 is a side view of the elevator driving device for a low-rise residential building shown in FIG. 1, and FIG. FIG. 4 is a side view of the elevator drive device for low-rise residential buildings shown in FIG. 3. 1 ... Base 2 ... Table 3 ... Scissor-like link 8! Structure 12.22 ... Actuation device 15.24 ... Spring device 12 ... Hydraulic cylinder

Claims (3)

[Claims] (1) a base; a table provided above the base and movable with respect to the base; and a table provided between the base and the table to allow the table to be moved relative to the base; an extensible scissor-shaped link mechanism that guides the scissor-shaped link mechanism in a vertically movable manner while maintaining a parallel relationship; an actuator that is attached to the scissor-shaped link mechanism and expands and contracts the scissor-shaped link mechanism; a spring device mounted thereon and acting to reduce the weight of the scissor linkage on the actuation device. (2) The elevator drive system for low-rise residential buildings according to claim 1, wherein the operating device is a hydraulic cylinder. (3) The elevator drive system for low-rise residential buildings according to claim 1, wherein the operating device is a screw cylinder.