JPS62111889A - Base structure of elevator hoisting 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 [Field of Application of the Invention] The present invention relates to a base structure for an elevator hoisting machine, and more particularly to a base structure for an elevator that allows easy machining of the base.

[Background of the invention]

A conventional elevator hoisting machine without gears was developed in Japanese Patent Application Laid-Open No. 1986-
As described in No. f18/184, a method is known in which a sheave and a drive shaft are coaxially arranged and supported at both ends by bearings. In this structure, the suspension load of the lifting object always acts on one drive shaft through the sheave, so there is a problem that the drive shaft must have a thick shaft diameter to take into account the suspension load. I'm pissing. The base structure of the two elevators had a hollow support shaft fixed to the base by welding.

If the hollow shaft is welded to the base after machining, it will be deformed by the welding heat, so machining must be done after welding, and there is a problem in that it takes a lot of time to process the hollow shaft welded to the base. there were.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator-base structure that facilitates machining of the base and has good precision.

[Summary of the invention]

In the present invention, a boss is provided on a support perpendicular to the base of a hoisting machine, and a lathe-machined hollow support shaft is press-fitted, shrink-fitted, or cold-fitted with an interference, thereby facilitating machining work. It was made easy.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Fig. 3 shows the whole elevator, in which the hoist is supported by a vibration-proof rubber 12 provided in the machine room of the elevator, and the sheave 3 of the hoist, the deflector sheave 1 and the main cable 8. is wound around the main rope 8, and one end of the main rope 8 suspends a heel 9, and the other end suspends a counterweight 10. Figure 2 shows a cross section of the hoisting machine. In the center of the base 4- that supports the hoisting machine, there are supports 1-a in double rows for supporting the loads of the drive machine 2 and sheave 3. A hollow boss ic is disposed vertically, perpendicular to the support 1a and connecting the two, and a drive unit 2 is fitted to one side of the support 1a. Further, the base 1 has a hollow support shaft 1b which has a hollow part through which the output shaft 2a of the drive machine 2 can extend to the other side and can sufficiently support the suspended load applied to the sheave. The hollow boss IC is press-fitted, shrink-fitted, or cold-fitted with an interference margin orthogonal to the hollow boss IC. The sheave 3 is supported by a bearing 4 on a hollow support shaft 1b extending coaxially with the output shaft 2a of the drive machine. A distant piece 5 is inserted between the bearings 4 to maintain a spacing, and is fixed to both sides of the sheave 3 with lids 6. A wheel boss 7 is installed at the extending end of the main force φ28 of the drive machine 2.
are mated and fixed. Further, a flange portion 3a provided on the side of the sheave 3 is fitted onto the outer periphery of the wheel boss 7, and is fastened to the sheave 3 through poles 1 to (not shown). One side of the output shaft 2a of the instant machine 2 is supported by a bearing 4 via a wheel boss 7 and an M wheel 3, and the other side is supported by a bearing 2b on the driving machine 2 side.

In addition, a braking device 13 for braking the seat 9 is disposed closer to the extending end of the output shaft 2a than the sheave 3 from the support body 1a of the base 1,
It is fixed to the base 1.

By separately machining the hollow support shaft perpendicular to the base 1 in this way, the hollow support shaft can be lathe-machined, and the hollow boss 1. The machining work becomes easier because the [) and eyes Y- of c+ are tied by boring. In addition, since the drive unit mounting portion fitting convex portion 1 (1) and the inner diameter portion of the hollow boss can be processed in the same setup operation, there are effects such as good processing accuracy in terms of concentricity, surface angle, etc.

〔Effect of the invention〕

According to the present invention, since the base and the hollow support shaft can be machined separately, there is an effect that machining work is facilitated.

[Brief explanation of drawings]

Fig. 1 is a sectional view of an industrial innovator hoisting machine showing an embodiment of the present invention, Fig. 2 is a sectional view of a base and a hollow support shaft, and Fig. 3 is a conceptual diagram of an elevator-hoisting machine. . DESCRIPTION OF SYMBOLS 1... Base, 1a... Support body, 1b... Hollow support shaft, 2... Drive machine, 3... Sheave, 1-3... Braking device.

Claims (1)

[Claims] 1. An elevator hoisting machine comprising a sheave that raises and lowers a car, a drive machine that applies rotational force to the sheave, a braking device that brakes the sheave, and a base that supports these, the above-mentioned A support is provided that is fixed perpendicular to the base, and a joint portion into which the hollow support shaft that supports the sheave is fitted is provided on the support, and the hollow support shaft is provided with a tightening interference to the support. , a base structure for an elevator hoisting machine characterized by being press-fitted or shrink-fitted.