JPS6312583A - 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 [Industrial Application Field] The present invention relates to an elevator hoist, and more particularly to the structure of an elevator hoist using a speed reducer having parallel shaft gears.

[Prior art]

Conventionally, an elevator hoist using a speed reducer having parallel shaft gears has generally had a structure shown in a cross-sectional view in FIG. 4. That is, the electric motor 1 is attached to a gear box 3 via a cylindrical bracket 2, and within this gear box 3, an input shaft 4, an intermediate shaft 5, and an output shaft 6 are provided in parallel and rotatably. There is. And the input shaft 4 has a gear 7
However, gears 8 and 9 are fixed to the intermediate shaft 5, and a gear 10 is fixed to the output shaft 6.
and 10 mesh with each other to form a speed reducer. The input shaft 4 is connected to a coupling 11 that protrudes from the gear box 3 and is provided at the protruding end of the input shaft 4, and a coupling 12 that is provided at the tip of the output shaft 1a of the electric motor 1. A sheave 13 is fixed to one end of the output shaft 6 that protrudes from the gear ill. (The end of the output shaft 6 that protrudes from the sheave 13 is rotatably supported by a bearing 14. The gear box 3 is rotated downwardly F along the axes of the parallel shafts 4, 5, and 6. It has a split IIf function.

When assembling the conventional elevator hoisting machine configured as described above, the gear box 3 is divided into two parts and the gears 7 to 10 are assembled to form a reducer, and then the upper box of the gear box 3 is placed over the gear box 3. Conclude by going to Port 1, etc.

Thereafter, the side surface 2n of the bracket 2 is attached to the side surface of the gear box 3, and the electric motor 1 is temporarily fixed to the other side surface 2b of the bracket 2. After the couplings 1.1 and 12 are aligned and fixed, the bracket 2 and the electric motor 1 are fastened together.

In addition, this type of elevator hoisting machine was developed in Japanese Patent Application Laid-open No. 58.
As disclosed in Japanese Patent No. 177880, there is a known proposal to provide an idle gear between gears 7 and 8 to increase the distance between shafts 4 and 6 to avoid interference between sheave 73 and electric motor 1. It is being

[Problem that the invention seeks to solve]

According to the above-mentioned prior art, the bracket 2, which is a separate member, is used to attach the electric motor 1 to the gear box 3. For this reason, the machining tolerance of the mounting surface of the bracket 2 of the gear box 3, the machining parallelism, concentricity, and surface angle between the mounting surface 2a of the bracket 2 to the gear box 3 and the mounting surface 2b of the electric motor 1. There has been a problem in that assembly accuracy is reduced due to tolerances and furthermore, the accumulation of these tolerances. Therefore, the machining accuracy of the bracket 2 as a single item must be considerably high, and many man-hours are required to align the output shaft 1a of the electric motor 1 and the input shaft 4 of the reducer 3 during assembly. Ta.

If the assembly precision is lowered at this time, pulsation will occur when the gears mesh due to misalignment, which will be transmitted to the car via the sheave 13 and a rope (not shown), causing discomfort to passengers and reducing the performance and reliability of the elevator. There was a problem with letting it happen. This problem is discussed in the above-mentioned Japanese Patent Application Laid-Open No. 58-1989. 17788
Even the proposal made in Publication No. 0 was not taken into account.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an elevator hoisting machine that allows easy centering adjustment between the electric motor and the speed reducer, and that can be easily assembled with high precision. shall be.

[Means for solving problems]

In order to achieve the above object, the present invention divides a flange for attaching an electric motor to a gear box housing a reducer of an elevator hoist into two parts with a diameter of 42, and separates each of the two divided gear boxes. It is integrally formed on one side with a reinforcing frame interposed therebetween.

[Effect]

According to the above configuration, the gear box and the flange, which are divided into two parts, are each formed integrally through the reinforcing frame.
The gear box, reinforcing frame, and flange can be placed on top and bottom and fastened with bolts, etc. at the same time, eliminating the need to adjust the alignment of the flange with respect to the gear box, making it easy to position the motor in the correct position relative to the reducer. Can be installed.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the elevator fabric according to the present invention will be described below with reference to the drawings.

An embodiment of the present invention is shown in FIGS. 1, 2, and 3.

In these figures, the same or equivalent parts as in the conventional example shown in FIG. 4 are designated by the same reference numerals, and the explanation thereof will be omitted. A feature of the present invention lies in the mounting structure for mounting the electric motor 1 to the gear box 3. A flange 15 for mounting the electric motor 1 is formed in an annular shape, and the flange lb of the electric motor 1 is fastened with a bolt 16 through a mounting hole 1.5a formed concentrically with the flange 15. ing. This flange 15 is diametrically divided into two parts 15b and 15c, and the inner periphery of the upper flange 15b is
b and the mounting surface 15 of the flange 1b of the electric motor 1.
In the direction opposite to d, an upper reinforcing frame 16a having a semi-cylindrical shape is integrally formed.

The upper part 1.6b of this upper reinforcing frame 16a is integrally connected to the upper gear box 3a of the gear box 3 which has been extended and divided into two parts, and is connected to the left and right halves of the upper reinforcing frame 16a. The end of the face is an extension part 1, 6c having an L-shaped cross section, and is integrally connected to the upper gear box 3a. The lower surface of this extending portion 16c and the lower surface of the dividing surface 3C of the upper gear box 3a are integrally formed so as to be on the same plane. Similarly, a semi-cylindrical lower reinforcing frame 16d is integrally formed on the inner circumference of the lower flange 15c, perpendicular to the lower flange 15c and in the opposite direction to the mounting surface 15d of the flange [1) of the electric motor 1. The lower part 1 of this lower reinforcing frame 16d is formed.
6o is extended and integrally connected to the attachment part 3d of the base 17 of the lower gear box 3b, and the ends of the left and right halves of the lower reinforcing frame 16d form an extended part 16r having an L-shaped cross section. and is integrally connected to the lower gear box 3b.

The ``-'' surface of the extending portion 16f and the upper surface of the dividing surface 3e of the lower gear box 3b are integrally formed so as to be on the same plane.

When assembling this embodiment configured as described above, first attach the lower gear box 3b to the base 17, and then attach the lower gear box 3b to the base 17.
Place the dividing surface 3C of the upper gear box 3a on the dividing surface 3o of 1), and fasten both gears [3a, 3b with bolts 18. At this time, the respective dividing surfaces 3c and 3o of the gear boxes 3a and 3b and the reinforcing frame 16a.

Since the surfaces of the extending portions 16G and 16f of the gear boxes 16d are formed to be on the same plane, they are in contact with each other at the same time with the divided surfaces 3c and 3e of the gear boxes 3a and 3b being in contact with each other. Therefore, the extension portion 16C916f can be easily fastened with the bolt 19 at the same time.

In this way, the flanges 15b and 15c are integrated into an annular shape. The flange 1b of the electric motor 1 is fitted into the flange 15 from the direction of the arrow through the fitting part 15e formed on the flange 15, and the bolt 1 is inserted through the mounting hole 15a.
It is concluded by 6. Note that 20 is a bearing portion of the input shaft 4 formed in the bearing box 3, 21 is a bearing cover mounting portion, and 22 is a brake for braking the sheave 13.

According to this embodiment, the mounting surface 15d of the flange 15.

Since the fitting part 15e of the electric motor 1, the bearing part 20 of the input shaft 4 of the reducer, and the bearing cover mounting part 21 can be machined simultaneously on the same processing machine table, the relative positions and dimensions of these parts are Can be processed with high precision. Therefore, the axis of the output shaft 1a of the electric motor 1 and the axis of the input shaft 4 of the reducer are aligned! No trimming work is required. Furthermore, when the upper and lower parts 3a and 3b of the gear box 3 are completed during assembly, the -L lower], 5b and 15C of the flange 15 are simultaneously brought together, and the electric motor 1 can be installed immediately.

[Effects of the Invention] As described above, according to the present invention, the motor mounting flange is integrated with the gear box, and the upper and lower dividing surfaces of the gear box and the upper and lower dividing surfaces of the reinforcing frame connecting the gear box and the flange are the same. Since it is formed into a "plane", alignment of the output shaft of the motor and the input shaft of the reducer is not required during the assembly work of attaching the motor to the gear box, making it easy to assemble with a simple structure and high precision.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of an elevator hoisting machine according to the present invention, Fig. 2 is a view taken along the line A-A in Fig. 1, and Fig. 3 is a flange and reinforcing frame shown in Fig. 2. 4th exploded perspective view showing
The figure is a cross-sectional view showing a conventional elevator hoisting machine. 1... Electric motor, 3... Gear box, 4... Human power axis, 6...
... Output shaft, 13... Sheave, 15... Flange, 1
6... Reinforcement frame, 22... Brake device.

Claims (1)

[Scope of Claims] 1. A reduction gear consisting of a gear train attached to a plurality of parallel shafts, and 2.
A gear box formed to be separable; an electric motor attached to the gear box via a flange and connected to the input side of the parallel shaft; In an elevator hoisting machine comprising a sheave connected to the output side of the shaft and a brake that controls the sheave, the flange is divided into two on the diameter, and each of the two halves is separated through a reinforcing frame. A hoisting machine for an elevator, characterized in that it is integrally formed on one side of a gear box. 2. An elevator hoist according to claim 1, characterized in that the divided surfaces of the flange and the reinforcing frame divided into two are formed on the same plane as the divided surface of the gear box divided into two. Machine.