JPH0478556B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an elevator hoist, and more particularly to an elevator hoist using parallel shaft gears.

[Conventional technology]

A conventional elevator hoisting machine will be explained with reference to FIGS. 6 to 8. Fig. 6 is an overall view of an elevator using a conventional hoisting machine, Fig. 7 is a sectional view taken along line A-A in Fig. 6, and Fig. 8 is a partial sectional view taken along line B-B in Fig. 7. It is.

In the figure, 1 is an elevator hoist;
It is installed on the floor of a machine room 3 provided on one side of the hoistway 2 via a machine bed 4. Reference numeral 5 designates a speed reducer box containing a speed reduction mechanism (not shown) consisting of parallel shaft gears, and a brake device 8 and an electric motor 9 are attached to the input shaft 7 side of the box, and an output shaft 10
On the side, there is a winding drum 12 for winding the main rope 11.
The main rope 11 is connected to the car 14 via a sheave 13 installed above the hoistway. 15 is machine bet 4
The brake frame is fixed to the brake frame, to which the brake device 8 is fixed, and a fitting portion 15a is formed on one side, into which the flange portion 9a of the electric motor 9 is fitted. 16 is a joint fixed to the input shaft 7; 17 is a brake drum fixed to the rotating shaft 18 of the electric motor 9; bolts 19 are used to connect the joint 16 to a plurality of holes 17a made in the brake drum 17; By fitting the fixed rubber bushing 20, the input shaft 7 and the rotating shaft 18 are made to interlock with each other. Reference numeral 21 denotes a brake lever to which a brake shoe (not shown) is attached, and the brake shoe is normally pressed against the brake drum 17 by a compression spring (not shown) to prevent rotation of the rotating shaft 18 and the input shaft 7. ing. Also,
When the car 14 is raised or lowered, the electromagnetic coil 22 is energized and the brake lever 21 is moved against the compression spring.
is pushed out and a slight gap is maintained between the brake shoe and the brake drum 17, and the rotating shaft 1
8 and input shaft 7 are rotatable. In addition, 23
24 is the entrance/exit of the elevator hall, and 24 is the entrance/exit of the machine room 3.

[Problem that the invention seeks to solve]

The conventional device described above has a structure in which the reducer box 5 and the brake frame 15 are fixed separately on the machine bed 4. Therefore, in order to center the rotating shaft 18 and the input shaft 7, the brake frame 15 and the machine bed It was necessary to insert a shim 25 between it and 4 to make fine adjustments in the vertical direction, horizontal direction, and inclination. This work requires manual adjustment of positional deviations and inclinations using a dial gauge, which makes centering very difficult.Also, because it is manual work, even if adjustments are made in the same way, each value will vary. There was a problem that the accuracy was different and the quality was inconsistent, causing noise and vibration.

Another problem is that if the position of the machine room 3 is opposite to that shown in Fig. 7, that is, the position of the machine room 3 is on the right side of the hoistway 2, normally it is sufficient to rotate the hoist 1 by 180 degrees. Depending on the structure of the machine room 3, the hoisting machine 1 may not be able to rotate 180 degrees due to the positional relationship of the pillars 26 and the entrance/exit 24. In other words, hoisting machine 1
If the winding drum 12 is rotated by 180 degrees, the winding drum 12 will be positioned toward the corner of the machine room 3, so the positional deviation from the sheave 13 at the top of the hoistway will become larger, and the inclination of the main rope 11 will become larger. (Figure 7 11a),
Not only will this cause vibrations, but there is also a risk that the main rope 11 will come off the take-up drum 12 and sheave 13. In such a case, the reduction gear box 5 containing the parallel shaft gears must be manufactured in the opposite direction, so the number of types of reduction gear boxes 5 increases.
There was a problem that standardization was not possible.

Furthermore, when it is necessary to increase the diameter of the winding drum 12 due to an increase in the lifting speed of the car 14, etc., the winding drum 12 interferes with the brake frame 15 etc. in the conventional device. The reduction gear box 5 had to be manufactured in a long size, which hindered the increase in the number of types of the reducer box 5 and the standardization of the reducer box 5.

The purpose of the present invention is to solve the problems of the above-mentioned conventional devices, and it is an object of the present invention to provide a versatile elevator hoist that can be easily adjusted for centering and can be used for a variety of purposes. That is.

[Means to solve the problem]

The present invention has a configuration in which a brake frame is attached to a reducer box instead of a machine bed, and an electric motor is fixed to this brake frame.Furthermore, fitting portions are provided on both sides of the brake frame, on the input shaft side of the reducer box, and on the electric motor, respectively. By fitting and fixing each of the above-mentioned fitting parts, the electric motor, brake frame, and reduction gear box are made into an integrated structure.

Furthermore, by forming fitting parts on both end faces of the reducer box where the input shaft is installed, it is possible to mount an electric motor, etc. on the opposite side of the winding drum with the reducer box in between. By making it vertically symmetrical, it has features such as being able to install the reducer box upside down.

[Effect]

According to the present invention, since there is no need for adjustment between the brake frame and the machine bed, the input shaft side of the reducer box,
By simply fitting and fixing the fitting portions provided on the brake frame and the electric motor, the rotating shaft of the electric motor and the input shaft of the reducer box can be aligned. In addition, by installing the electric motor, etc. on the opposite side of the winding drum with the reducer box in between, it is possible to use a winding drum with a larger diameter.Furthermore, by installing the reducer box upside down, the electric motor, etc. The winding drum can be installed with the left and right sides reversed.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a longitudinal cross-sectional view of a main part of the hoist according to the present embodiment, FIG. 2 is a partial cross-sectional view taken along line CC in FIG. 1, and FIG. 3 is a perspective view of a brake frame.

In the figure, numeral 30 is a reduction gear box housing an electric mechanism 31 made of parallel shaft gears, and fitting portions 30a and 30b are formed on both end faces where the input shaft 7 is installed. 32, 33 are bearings of the input shaft 7, 34
is the bearing holding plate. Reference numeral 35 designates a brake frame, which has fitting parts 35a and 35b formed on both sides.By fitting this fitting part 35a into the fitting part 30a of the reducer box 30 and fixing it with bolts 36, the brake The frame 35 and the reducer box 30 are integrated. 37b is a fitting portion formed on the flange portion 37a of the electric motor 37;
b into the fitting part 35b of the brake frame 35 and tightening the bolt (not shown),
The electric motor 37 and the brake frame 35 are integrated. At this time, each of the fitting parts 30a, 35a,
35b and 37b are simply fitted and fixed, and are prefabricated at the factory so that the centers of the rotating shaft 18 and input shaft 7 are aligned, so there is no need to make fine adjustments manually as in the conventional case. , we can always provide a hoisting machine with constant quality. In FIG. 2, reference numeral 21 denotes a brake lever, which is configured to be rotatable about a shaft 38, and is normally operated by a compression spring 40 attached to a rod 39 penetrating through the upper part. brake drum 17
The rotation shaft 18 and the input shaft 7 are prevented from rotating. Also, while the car 14 is being raised or lowered,
The electromagnetic coil 22 is energized, pushes the brake lever 21 apart to the left and right against the compression spring 40, maintains a small gap between the brake shoe 41 and the brake drum 17, and closes the rotating shaft 18 and input shaft. 7 is rotatable.

As shown in FIG. 1, the reducer box 30 of this embodiment has fitting portions 30a on both end faces where the input shaft 7 is installed.
Since the winding drum 12 and 30b are formed
If the motor 37 etc. and the winding drum 12 cannot be installed on the same side of the reducer box 30 because of the large diameter, the motor 37 etc. should be installed on the opposite side of the winding drum 12 as shown in FIG. I can do it.

FIGS. 5a and 5b are diagrams showing a case where the machine room 3 and the hoistway 2 are on opposite sides. In such a case,
If the hoisting machine 1 in Fig. 5a is rotated 180 degrees, Fig. 5b
However, depending on the site, it may not be possible to rotate the hoist 1 by 180 degrees and install it depending on the positional relationship of the pillars 26 and the entrance/exit 24. In that case, conventionally the reducer box had to be manufactured in reverse order. However, since the reducer box 30 of this embodiment is vertically symmetrical, if it is used upside down, it can be used as a reverse reducer box 50 as it is.

In the above explanation, the case of a drum type elevator has been explained, but it goes without saying that the present invention can also be applied to a case of a crane type elevator.

〔Effect of the invention〕

As described above, according to the present invention, the rotation shaft 18 of the electric motor 37 and the input shaft 7 can be centered extremely easily and with high precision. Also,
It is possible to provide an elevator hoisting machine that can be applied even when the electric motor 37 etc. and the winding drum 12 are reversed or when the diameter of the winding drum 12 is increased.

[Brief explanation of the drawing]

1 to 3 are diagrams showing one embodiment of the present invention, in which FIG. 1 is a vertical sectional view of the main part of the hoisting machine, and FIG. 2 is a partial sectional view taken along line C-C in FIG. 1. 3 is a perspective view of the brake frame, FIGS. 4 and 5 are views showing other embodiments of the present invention, FIG. 6 is an overall view of an elevator using a conventional hoisting machine, and FIG. The figure is number 6
A sectional view taken along line A-A in the figure, Figure 8 is B in Figure 7.
- It is a partial sectional view along the B line. 1...Hoisting machine, 2...Hoistway, 3...Machine room,
4...Machine bed, 5,30,50...Reducer box, 7...Input shaft, 8...Brake device, 9,3
7... Electric motor, 11... Main rope, 12... Winding drum, 14... Car, 15, 35... Brake frame, 30a, 35a, 35b, 37b...
…Fitting portion.

Claims (1)

[Claims] 1. Between the input shaft 7 side of the speed reducer box 30 equipped with the speed reduction mechanism 31 using parallel shaft gears and the electric motor 37,
In the brake frame 35 to which the brake device 8 is attached, fitting parts 30a and 30b formed on both sides of the reducer box 30 where the input shaft 7 is installed, and bearings 32 and 33 of the input shaft 7 are provided. holes and fitting portions 30a and 3 formed on one side of the brake frame 35.
0b, a fitting portion 35b formed on the other side of the brake frame 35, and a fitting portion 37b formed on the electric motor 37 and capable of fitting into the fitting portion 35b, Either one of the fitting parts 30a or 30b and the fitting part 35a are fitted and fixed, and the fitting part 35b
and a fitting portion 37b are fitted and fixed. 2. The elevator hoisting machine according to claim 1, wherein the reducer box 30 is configured vertically symmetrically.