JPS606578A - Speed reducer for elevator winding machine - 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 The present invention relates to a speed reduction device for an elevator hoisting machine, and more particularly to a traction roller type speed reduction device.

Conventionally, gear-type speed reducers have been widely used as speed reducers for elevator hoisting machines, but these speed reducers have the drawback of being susceptible to vibration and noise due to tooth profile errors, pitch errors, backlash, and the like. For this reason, in recent years, traction roller type reduction gears have attracted attention as they are quiet, have a large reduction ratio, and are highly efficient.In this traction roller type reduction gear, the rollers are pressed against each other with a large pressing force to prevent slipping. However, the problem was how to apply the pressing force.

In view of such circumstances, the present invention provides a speed reduction device for an elevator hoisting machine that allows the weight of the elevator car to be used for the above-mentioned pressing force and does not require a pressing device such as a spring or a hydraulic device. .

Hereinafter, one embodiment of the present invention will be explained based on the drawings.
In the figure, (1) is the elevator machine room, (2) is the base installed in the machine room (1), and (3) is the speed reducer installed on this base (2), which is driven by the electric motor (4). The drive is decelerated so that it can be transmitted to the drive network vehicle (5). A main rope (6) is strung around this drive net car (5), and a car (7) is connected to one end of this main rope (6), and the other end is strung around an idle wheel (8). It is then connected to the counterweight (8).

Figures 2 and 3 show the specific configuration of the speed reduction device (3), which is connected to the drive network wheel (5).
It is incorporated within. In the same figure, (lO) is the conical part (
It is a planetary shaft having a planetary shaft, which is rotatably supported via bearings (12) at three positions equally spaced in the circumferential direction within the drive network sheave (5), and They are arranged radially with the tips facing inward in the radial direction. The conical portion (11) of each planetary shaft (10) has a drive network wheel (5).
), the conical portions (15) and (16) of the driven shaft (13) and the driving shaft (14) are brought into contact with each other from both sides in the axial direction, so that they can rotate relative to each other in this state.

Further, the driven shaft (13) is fixed to the support plate (17), and the drive shaft (14) is mounted on the bearing stand (1B) with a bearing (
The electric motor (4) is rotatably supported via the electric motor (19).
).

In the above configuration, the drive shaft (1) is driven by the electric motor (4).
4), the planetary shaft (10) is rotated via the conical portion (16) of the drive shaft (14) and the conical portion (11) of the planetary shaft (10). The conical part (11) of the planetary shaft (lO) is at the same time the conical part (15) of the driven shaft (13).
The driven shaft (13) is in contact with the support plate (1
7) and cannot rotate, so when the drive shaft (14) is rotationally driven, the planetary shaft (10) revolves around the axis of the drive shaft (14) while rotating. The revolution causes the drive net wheel (5) to rotate as one unit.

At that time, each conical part (11), (15), (16) needs to be rotated relative to each other without causing slippage, but each conical part (11), (15), (16) Since the loads of the car (7) and the weight (8) are applied to the main rope (6), there is no need for a pressing device such as a spring or hydraulic device to press the conical parts against each other. .

In the above embodiment, since the driven wheel (13) is fixed, the reduction ratio is a constant reduction ratio of 1/2, but the driven shaft...
If (13) is made rotatable so that it can be rotated at an arbitrary number of rotations, the reduction ratio can be changed continuously. Further, it goes without saying that the number of the planetary shafts (lO) installed is not limited to three.

As described above, according to the present invention, since the conical portions corresponding to the traction rollers can be brought into pressure contact with each other by using the load of the car, a suppression device such as a 4F spring or pressure relief device is required. The advantage is that the configuration can be simplified without any problems.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of the entire elevator showing an embodiment of the present invention, Fig. 2 is a partial cross-sectional view showing an enlarged main part of Fig. 1, and Fig. 3 is a line - - - in Fig. 2. 4 is a cross-sectional view showing healing. (3)...Reduction gear (4)...Electric motor (5)...
・Drive net car (8)...Main rope (7)...Cage (l
O)... Planetary shaft (11), (15), (1B)...
Conical portion (13)...Driver shaft (14)...Drive shaft In the drawings, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] In an elevator hoist reduction gear unit comprising a drive network shear rotatably driven by an electric motor, a main rope that spans the drive network sheave, and a car connected to the main rope, a conical portion is provided in the drive network vehicle. A planetary shaft having a planetary shaft is arranged in a radial direction so as to be freely rotatable, and each conical part of a driving shaft and a driven shaft, which are arranged opposite to each other in the axial direction of the drive network wheel, is attached to the conical part of the planetary shaft on both sides thereof. A speed reduction device for an elevator hoist, characterized in that the drive shaft is brought into contact with the electric motor, and the drive shaft is interlocked with the electric motor.