JP2001039655A - Elevator hoist installation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve riding comfortableness by minimizing the transmission of the vibration of a hoist to a car via a guide rail. SOLUTION: This elevator is formed so that a hoist 3 is installed in a lower space 2 of a hoistway, and a rope 5 applied to a sheave 4 of the hoist 3 is applied to a car through a return wheel, suspended wheel, and counterbalance weight disposed in the hoistway so that the car can be moved up and down by the hoist 3 along a guide rail 10. A frame 11 is disposed inside a lower space 2, a damping material 12 is installed on four sides of the frame 11, the hoist 3 is mounted on a machine base 13, and the machine base 13 is disposed on the inside of the damping material 12 with a clearance provided between the machine base and the upper surface 14 of the frame 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an installation structure of a hoist in a machine room-less elevator in which an elevator hoist is installed below a hoistway.

[0002]

2. Description of the Related Art There are various types of elevator lifting mechanisms.
As one of them, in recent years, a machine room-less elevator in which a machine room is provided in a lower space (commonly called a pit) of a hoistway in which a car moves up and down without developing a machine room of an elevator on a roof of a building has been developed. As shown in FIG. 5, a machine base D is fixed to a gantry C arranged and fixed in a lower space B of a hoistway A by a fixing means such as a bolt and a nut or welding. The hoisting machine E is mounted thereon, and the hoisting machine E winds and rewinds the rope F to raise and lower the car G suspended from the rope F (called "pull-up type"). In this case, the sheave H of the hoist E
The rope F is folded back downward via a return wheel I disposed at the upper part of the hoistway A, and the tip of the rope F is hung on a suspending wheel J provided at the lower part of the car G to put the car G into the hoistway A. Hanging.

[0003]

The conventional hoisting machine installation structure has the following problems. 1. As shown in FIG. 5, a machine base D on which a hoisting machine E is mounted is directly attached to a gantry C, and a car G is moved up and down the hoistway A by being guided by a car guide rail K erected from the gantry C. Therefore, the vibration generated from the hoisting machine E is transmitted to the machine base D, the gantry C, the car guide rail K, the return wheel I, and the car G in this order.
The vehicle may vibrate, making the ride worse, or if the vibration is severe, the rider may feel uneasy. 2. There are two types of hoisting machines E, those having gears for increasing the torque of the motor (with gears) and those without gears (gearless). Among them, the hoist with gears has the advantage that a small and inexpensive motor can obtain sufficient torque, but the vibrations generated from the gears are large, so the first problem becomes more remarkable. 3. Lower space B of hoistway A
The gap between the wall surface T and the gantry C is narrow, and the installation work of the hoisting machine E is difficult and takes time.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator hoisting machine installation structure in which the vibration of the hoisting machine is hardly transmitted through a car guide rail, a rope, and the like, and the vibration of the car is small. .

[0005] The first elevator hoisting machine installation structure of the present application has a hoisting machine installed in a lower space of a hoistway, and a rope hung on a sheave of the hoisting machine arranged in the hoistway. In an elevator that can be lifted and lowered by a hoist along a car guide rail, a car, a hanging car, a hanging weight, etc., place a gantry in the lower space, and install vibration isolating materials on all sides of the gantry. The mounting and hoisting machine is mounted on a machine base, and the machine base is placed inside the vibration isolating material and suspended above the mount.

The second elevator hoisting machine installation structure of the present application is the same as the first elevator hoisting machine installation structure, wherein the vibration isolator absorbs vibrations in all directions and upward of the machine base. .

[0010]

(Embodiment 1) FIGS. 1 to 4 show a first embodiment of an elevator hoisting machine installation structure according to the present invention.
It will be described in detail based on. As shown in FIG. 1, the elevator hoisting machine installation structure has a vibration damping material 12 attached to four sides of a gantry 11 arranged in a lower space 2 of a hoistway 1, and a machine base 13 on which a hoisting machine 3 is mounted. The hoisting machine 3 is set at a predetermined position by being floated from the upper surface 14 of the gantry 11 inside the anti-vibration material 12, and is mounted on a return wheel 6, a hanging weight 8, etc. arranged in the hoistway 1. The rope 5 is hung on the hanging wheel 7 below the car 9, and the rope 5 hung on the hanging wheel 7 is wound or unwound by the sheave 4 of the hoisting machine 3 installed at a predetermined position, and the car is guided. The car 9 can be moved up and down along the rail 10. still,
In FIG. 1, rails provided in parallel with the car guide rails 10 are rails for guiding the hanging weight 8.

As shown in FIG. 2, the gantry 11 (commonly referred to as a beam) has a cross section in which side plates 19 (hereinafter referred to as “mounting side plates 19”) are provided on both sides in the width direction of the back plate 16 along the longitudinal direction. It is a letter-shaped steel material. In this embodiment, as shown in FIGS. 1 and 2, two gantry 11 are arranged in parallel at a predetermined interval such that their openings 22 face each other, and one (lower) gantry of each gantry 11 is arranged. The side plate 19 is fixed to the floor of the lower space 2 by bolts and nuts, welding or any other fixing means. As shown in FIG. 3B, the inner surface 25 of the gantry side plate 19 is a tapered surface that gradually approaches the outer surface 28 from the back plate 16 toward the opening 22.

As shown in FIG. 2, the machine base 13 is a steel material having a U-shaped cross section provided with side plates 33 (hereinafter referred to as "base side plates 33") on both sides in the width direction of the back plate 31 along the longitudinal direction. is there. In this embodiment, as shown in FIGS. 1 and 2, two machine bases 13 are arranged in parallel at a predetermined interval such that the openings 36 face outward, and one (upper) side of each machine base 13 is arranged. A metal plate 39 (commonly called a machine bet) is laid over the upper surface of the base side plate 33, and the hoisting machine 3 can be mounted on the plate 39. As shown in FIG. 3B, the inner surface 41 of the base side plate 33 is a tapered surface that gradually approaches the outer surface 44 from the back plate 31 toward the opening 36.

As shown in FIG. 2, three mounting plates 45 are arranged on the back plate 16 of each mount 11 at predetermined intervals near the center in the longitudinal direction, and these are shown in FIGS. 3 (a) to 3 (c). Is fixed to the back plate 16 by bolts and nuts. As shown in FIGS. 2 and 3B, each mounting plate 4
Reference numeral 5 denotes an elongated metal plate material, and when one end in the longitudinal direction is fixed to the back plate 16 of the gantry 11 in a state of being grounded to the floor of the lower space 2, the other end in the longitudinal direction is higher than the upper gantry side plate 19 The upper locking member 46 is fixed to the upper part of the mounting plate 45 protruding above the gantry side plate 19 with bolts and nuts (FIGS. 3A to 3C), and in the positional relationship shown in FIG. Six upper locking members 46 are arranged.

Each upper locking member 46 has a vertical plate 50 fixed to a predetermined position of the mounting plate 45 as shown in FIG.
And a horizontal plate 53 projecting from the vertical plate 50 in a direction orthogonal to the vertical plate 50. The horizontal plate 53 is formed in an L-shape, and has different widths in order to impart strength in accordance with the applied load. Specifically, since a greater load is applied closer to the sheave 4 (FIG. 1) of the hoisting machine 3, the upper locking member 46 (FIG. 3A) closest to the sheave 4 as shown in FIGS. Is the widest, and the upper locking member 46 farthest from the sheave 4 (the right upper locking member in FIG. 3A) is the narrowest. As shown in FIGS. 3A and 3C, a reinforcing plate 55 is provided inside each upper locking member 46 (between the vertical plate 50 and the horizontal plate 53), and the base side plate 33 is connected to the horizontal plate. Even if the horizontal plate 53 is locked to the vertical plate 50 from below,
It does not bend in the direction. Further, a reinforcing plate 55 is provided on the upper locking member 46 closest to the sheave 4.
Are provided to further enhance the strength.

On the back surface of the horizontal plate 53 of each upper locking member 46, a rubber vibration isolator 12 is arranged. As shown in FIG. 3B, the anti-vibration material is inverted L with respect to the upper locking member 46.
It is formed in the shape of a letter, and is a free base that can move the lower base side plate 33 on the lower side of the machine base 13 on which the hoisting machine 3 is mounted between the vibration isolator 12 and the gantry side plate 19 in the vertical and horizontal directions. When the rope 5 (FIG. 1) in which the car 9 is suspended is connected to the sheave 4 of the hoisting machine 3, the hoisting machine 3 is pulled up by the load of the car 9 and the hanging weight 8,
The base side plate 33 is connected to the upper locking member 4 via the vibration isolator 12.
6 from below, and the end faces of the base side plates 33 of the two machine bases 13 are
And comes into contact with the mounting plate 45 via the. At this time, as shown in FIGS. 3B and 3C, a gap 62 is formed between the base side plate 33 and the gantry side plate 19 which are locked by the upper locking member 46, and the base side plate 33 is formed. Is in a state of floating above the upper surface 14 of the gantry side plate 19 (non-contact state).

When the upper locking member 46 is locked to the base side plate 33, one of the bases is located between the inner surface 41 of the base side plate 33 and the vibration isolator 12 as shown in FIG. A metal plate 56 having a tapered surface opposite to the inner surface 41 of the side plate 33 and a flat surface on the other side is interposed so that the flat surface faces the vibration isolator 12 and the tapered surface faces the base side plate 33. As a result, the taper of the inner surface 41 of the base side plate 33 is canceled, and a uniform load is applied to the vibration isolator 12 and the upper locking member 46.

As shown in FIG. 4, of the three mounting plates 45 mounted on each of the gantry 11, side locking members 48 are fixed to two outer mounting plates 45 by bolts and nuts. ing. This side locking member 48 is an L-shaped metal plate as shown in FIG.
When it is attached to the outer end in the width direction, the base side plate 33 locked to the upper locking member 46 is sandwiched from both sides in the longitudinal direction to restrict the movement in the same direction. As shown in FIGS. 3A and 3B, the rubber vibration isolator 12 is also interposed between the respective side locking members 48 and the base side plate 33. A reinforcing plate 55 is also provided inside the side locking member 48.

As described above, the machine base 13 on which the hoisting machine 3 is mounted is surrounded by the vibration isolators 12 provided on all sides of the gantry 11 so that movement in the vertical and horizontal directions is restricted. It is held at a predetermined position. Further, even if the machine base 13 vibrates due to the vibration generated from the hoisting machine 3, the vibration is absorbed by the vibration isolator 12 and is attached to the mounting plate 45 via the upper locking member 46 and the side locking member 48. Since it is not transmitted, it is not transmitted to the gantry 11 on which the mounting plate 45 is mounted. Further, in the state where the base side plate 33 is locked to the upper locking member 46 as described above (usually in this state), a gap 62 is generated between the base side plate 33 and the gantry side plate 19, Since the machine base 13 and the gantry 11 are not in contact with each other, the vibration of the machine base 13 is directly
It is not transmitted to. Further, since the machine base 13 comes into contact with the locking members 46 and 48 via the rubber vibration isolator 12, displacement of the machine base 13 hardly occurs.
Even if the rope 5 connected to the hoisting machine 3 is cut off for some reason, the base side plate 33 remains on the upper surface 1 of the gantry side plate 19.
It does not fall below it when it gets on 4.

When the elevator hoisting machine installation structure of the present invention shown in FIG. 1 is realized, the gantry 11 installed on the wall surface side of the lower space 2 (the sheave 4 side of the hoisting machine 3) includes:
A mounting plate 45 to which the locking members 46 and 48 are fixed is mounted in advance, the mounting plate 45 is not mounted on the other gantry 11, and the mounting plate 45 is mounted from the gantry 11 side where the mounting plate 45 is not mounted. The machine base 13 on which the hoisting machine 3 is mounted is slid along the upper surface 14 of the mount 11 toward the mount 11 on which the
After the base side plate 33 is set inside the locking members 46 and 48, the mounting plate 45 to which the locking members 46 and 48 are fixed is attached to the gantry 11 where the mounting plate 45 is not mounted. The base side plate 33 of the other machine base 13 is set inside the stop members 46 and 48. In this way, the elevator hoisting machine installation structure of the present invention can be realized easily and in a short time even if the gap between the wall of the lower space 2 of the hoistway 1 and the gantry 11 is narrow. The base side plate 3 of the machine base 13 is provided inside the locking members 46 and 48.
When setting 3, the vibration isolator 12 and the metal plate 56 are of course interposed.

(Other Embodiments) The vibration isolator 12 is not limited to rubber, and vibrations generated from the hoist 3
Any material can be used as long as it can prevent transmission to the mounting plate 45 and the mounting plate 45. The inner surfaces 25 and 41 of the gantry 11 and the machine base 13 need not necessarily be tapered surfaces. When the inner surface 41 of the machine base 13 is not tapered, the metal plate 5 is placed between the vibration isolator 12 and the inner surface 41.
6 may not be interposed.

In the above embodiment, three mounting plates 45 are provided on each of the gantry 11, and the upper locking members 4 are mounted on the respective mounting plates 45.
6, but each of the mounts 11 is provided with one wide mounting plate 45, and the mounting plate 45 is provided with three upper locking members 4.
6 can be attached at predetermined intervals. The number of the upper locking members 46 is not limited to three as long as the machine base 13 can be reliably supported, and may be more or less.

In the above-described embodiment, bolts and nuts are used as fixing tools. However, the fixing means may be welding, bonding, or any other means.

[0023]

The first elevator hoisting machine installation structure of the present application has the following effects. 1. The gantry was placed in the lower space, anti-vibration materials were attached to the four sides of the gantry, the hoist was mounted on the machine base, and the machine base was floated inside the anti-vibration material from the top of the gantry. Vibration generated by the machine is not easily transmitted to the gantry. Therefore, the vibration generated from the hoisting machine
The car does not vibrate in the order of the return car-car.

The second elevator hoisting machine installation structure of the present application has the following effects. 1. Since the vibration isolator absorbs vibrations in all directions and upwards of the machine base, vibrations generated from the hoisting machine are less likely to be transmitted to the gantry.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an example of an embodiment of an elevator hoisting machine installation structure of the present invention.

FIG. 2 is a partially enlarged explanatory view of FIG. 1;

FIG. 3 is an explanatory view showing an example of an embodiment of an elevator hoisting machine installation structure of the present invention, wherein (a) is a plan view,
(B) is a sectional view, and (c) is a front view.

FIG. 4 is an explanatory view showing an example of an installation position of a hoist of an elevator.

FIG. 5 is an explanatory view showing an example of a conventional elevator hoisting machine installation structure.

[Explanation of symbols]

 Reference Signs List 1 hoistway 2 lower space 3 hoisting machine 4 sheave 5 rope 6 return car 7 hanging car 8 hanging weight 9 car 10 car guide rail 11 gantry 12 anti-vibration material 13 machine base 14 top of gantry

Claims (2)

[Claims] A hoist (3) is installed in a lower space (2) of a hoistway (1), and a rope (5) hung on a sheave (4) of the hoist (3) is connected to a hoistway ( 1) A car (9) is put on a turning wheel (6), a hanging wheel (7), a hanging weight (8), etc., arranged in the car, and the car (9) is wound up along a car guide rail (10). In the elevator that can be raised and lowered by the machine (3), the gantry (11) is arranged in the lower space (2), the vibration isolator (12) is attached to all sides of the gantry (11), and the hoist (3) is mounted. It is mounted on a machine base (13), and the machine base (13) is placed inside a vibration insulator (12).
An elevator hoisting machine installation structure, wherein the elevator hoisting machine installation structure is arranged so as to float from the upper surface (14) of (1). 2. The elevator hoisting machine installation structure according to claim 1, wherein the vibration isolator (12) is a machine base (13).
An elevator hoisting machine installation structure for absorbing vibrations in all directions and upwards.