JPS6044480A - Winding machine for elevator - 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 [Technical Field of the Invention] The present invention relates to an elevator hoisting machine in which a sheave for driving a car is rotated by an electric motor via a gear reduction mechanism.

[Technical background and problems of the invention]

As shown in FIGS. 1 and 2, a conventional elevator hoisting machine has a gear reduction mechanism 11 fixed on a machine bed 1, an electric Ia1 and an electromagnetic brake 2 directly connected to its input shaft 13, and an output shaft 15. It is equipped with a sheave 3 for driving the car attached, and a ride weight 5 is suspended from one end of a rope 4 wound around the sheave 3, and a counterweight 6 is suspended from the other end. In the gear reduction mechanism 11, an input shaft 13, an intermediate shaft 14, and an output shaft 15 are rotatably supported in parallel in a gear box 12 via ball bearings 16, respectively.
are helical gears 17 and 18 that mesh with each other at a predetermined gear ratio.
When the input shaft 13 is rotated by the electric motor, the output shaft 15 rotates at a reduced speed, causing the sheave 3 to rotate, thereby moving the seat 5. However, the hoisting machine having this structure has the disadvantage that during operation, the vibration of the gear of the gear reduction mechanism 11 is transmitted to the seat 5 via the sheave 3, causing discomfort to the passengers.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator hoisting machine in which there is no possibility that gear vibration of a speed reduction mechanism will be transmitted to the passenger car.

[Summary of the invention]

The present invention provides an output side gear of a gear reduction mechanism and a car driving sheave rotatably provided on a common fixed shaft, and also connects the gear and sheave with each other via an elastic body. It is characterized by preventing gear vibration from being transmitted to the sheave.

[Embodiments of the invention]

FIG. 3 shows an embodiment of the invention. As shown in the figure, the shaft 21 on the output side of the gear reduction mechanism 11 has one end fixed to a bearing part 15a in the gear box 15, and the other end extending outward from the gear box to a stand type bearing. 22, and the output side gear 20 is mounted on this shaft 21 with a ball bearing 2.
At the same time, a sheave 3 for driving the shuttle cage is also rotatably provided at the extension of the shaft 21 on the outside of the gear box via a ball bearing 23, and one end of the sheave 3 in the axial direction A screw member 25 is attached to a flange 20a formed at one end of the gear 20 and extending outside the gear box 15 via an elastic body 24 such as rubber that absorbs gear vibration.
It is connected by. A gear 17 is provided on the input shaft 12 directly connected to the electric motor 1, and this gear 17 connects to the hook intermediate shaft 1.
The gear 19 of the intermediate shaft 13 meshes with the gear 20 on the output side, and a car (not shown) is suspended from the sheave 3 driven by the gear 2o via a rope. The structure is exactly the same as the conventional structure shown in FIGS. 1 and 2.

With this configuration, the transmission of gear vibration in the gear reduction mechanism 1 to the sheave 3 is prevented by the buffering effect of the elastic body 24, so that the rider's heel can be in a vibration-free and comfortable riding state during operation. can be kept.

〔Effect of the invention〕

As described above, according to the elevator hoisting machine of the present invention, an elastic body is provided between the output side gear of the gear reduction mechanism and the sheave drive sheave to prevent gear vibration from being transmitted to the sheave. This has the effect that the rider is not affected by gear vibration and can drive with good riding comfort.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a conventional elevator hoisting system. FIG. 2 is a sectional view taken along the line 1-I in FIG. 1, and FIG. 3 is a sectional view corresponding to FIG. 2, showing an embodiment of the hoisting method for an elevator according to the present invention. 1... Electric motor, 3... Car drive mesh wheel, 20...
- Output side gear, 21... Fixed shaft, 24... Elastic body. Agent Patent Attorney Inoue - Male No. 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] In an elevator hoisting machine equipped with a car driving mesh wheel rotated by an electric motor via a gear reduction mechanism, the output side gear of the gear reduction mechanism and the mesh wheel are rotatably provided on a common fixed shaft. Also, an elevator hoisting machine characterized in that the gear and the sheave are connected to each other via an elastic body that absorbs gear vibration.