JPS63208491A - 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 [Industrial Application Field] The present invention relates to an elevator hoisting machine, and particularly to a parallel shaft reduction gear suitable for an inexpensive hoisting machine.

[Conventional technology]

In an elevator hoisting machine consisting of a parallel shaft multi-stage reduction gear, the sheave and electric motor are arranged on the same □ side with respect to the reduction gear, and the motor mounting part is stepped, as described in Japanese Patent Application Laid-Open No. 58-177880. Therefore, the sheave and motor are attached to only one side of the reducer, and if the same reducer box is used and the number of reduction stages is increased, the reducer box at the motor attachment part is stepped and has an inner diameter as described above. Since it is narrow, there is no space for additional gears.

[Problem that the invention seeks to solve]

In the above conventional technology, the side to which the sheave and electric motor are attached to the reducer is fixed to one side, which makes it easy to manufacture a hoist with left and right hand sides, and there is also space for additional gears when increasing the number of reduction stages. No consideration was given to ensuring that the same reducer box was used in either case.

An object of the present invention is to allow the same reduction gear box to be freely adapted to different left and right hand positions and the addition of the number of reduction stages.

[Means for solving problems]

The above purpose is to manufacture the inner and outer dimensions and shape of the raw material of the reducer box on the left and right sides, and to machine the bearing holes of the input shaft, each reduction shaft, and the output shaft to the same diameter on the left and right, and to mount the electric motor. This is achieved by drilling holes at the same position on both sides.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. In FIG. 1, the reducer 1 consists of an input shaft 2, a single-stage reduction shaft 3, a two-stage reduction shaft 4, and an output shaft 5, and each shaft is supported by bearings provided on the left and right sides of a reduction gear box 6. ing. The rotor 7a of the electric motor 7 is press-fitted into the extension 2a of the input shaft 2, and the stator 7b is directly attached to the reducer box 6.

A sheave 8 is press-fitted into the extension portion 5a of the output shaft 5. Here, it can be seen that if the left and right bearing holes and the motor mounting holes of each shaft are machined symmetrically, it can be easily rearranged to have the right and left hand opposite to that shown in FIG. 1, as shown in FIG.

Next, using the three-stage reduction gear box 6 shown in FIG. 1 and converting it into a two-stage reduction gear will be explained with reference to FIG. Without changing the position of each axis, the large gear 4A of the single-stage reduction shaft 3 and the two-stage reduction shaft 4
By meshing an idler gear 3A with the same number of teeth and a reverse helix angle, and meshing the idler gear 3A with the small gear 2A of the input shaft 2, it can easily be transformed into a two-stage reduction gear.

Next, although the electric motor 7 is shown as a built-in type in FIG. 1, when using a normal individual electric motor 14 via the coupling 10, the position of the side hole of the reducer box 6 of the mounting seat 9 can be changed to the built-in type as shown in FIG. By setting the mounting hole position to be the same as that of the electric motor 7, the same reduction gear box 6 can be used for mounting.

Next, if the weight of the ride (not shown) is large, the sheave 8
However, in case of one-sided support, it is necessary to increase the strength of the output shaft 5 and the sheave side bearing 11, but since the same reducer box 6 is used, as shown in Fig. 4, the output shaft 5 is further extended and the shaft end is 5a is supported by a separately installed bearing box 12, the bearing 12a can be freely enlarged for high loads, and by inserting an oil seal 13 into the hole of the bearing 11 of the reducer box 6, the reducer box 6 does not need to be changed. .

〔Effect of the invention〕

According to the present invention, only one type of reducer box is required, the cost can be reduced by mass production, and an inexpensive elevator hoist can be provided.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a view of the left and right side of Fig. 1, Fig. 3 is a modification of Fig. 1, and Fig. 4 is an example of the embodiment under high load. It is. DESCRIPTION OF SYMBOLS 1... Reducer, 6... Reducer box, 7... Build-in electric motor, 8... Sheave, 12... Bearing box, 14...
··Electric motor.

Claims (1)

[Claims] 1. In an elevator hoisting machine in which a sheave and an electric motor are arranged on the same side of a reduction gear, the bearing holes of each shaft of the reduction gear have the same diameter on the left and right, and the position of the electric motor mounting hole is An elevator hoisting machine characterized by using a reducer consisting of a reducer box that is the same on both left and right sides.