JPS6346452Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an elevator hoisting machine.

First, a conventional elevator hoisting machine will be explained with reference to FIG.

In the figure, 1 is a machine stand installed in the machine room of the elevator, 2 is the frame of the hoist installed on this via vibration-proof rubber 3, and 4 is a drive fixed to the output shaft of the hoist. A sheave, 5 is a support fixed to the frame 2 and extending downward, 6 is a deflection wheel pivotally connected to the lower part of this, 7 is a support that is wrapped around the drive sheave 4 and the deflection sheave 6, and is attached to both ends. These are main ropes that suspend a car 8 and a counterweight 9, respectively.

That is, the hoist is energized, the drive sheave 4 rotates, and the car 8 and counterweight 9 are driven via the main rope 7. In such elevators, during an earthquake, the hoisting machine vibrates vertically and horizontally at a magnitude several times the vibration of the building due to the relationship between the natural frequencies of the machine platform 1, anti-vibration rubber 3, etc. and the period of seismic waves. do. For this reason, there are problems such as the main rope 7 deviating from the drive sheave 4, causing secondary damage, and the recovery after an earthquake being troublesome.

This invention aims to eliminate the above-mentioned drawbacks and provides an elevator hoisting machine that has a simple structure and prevents the main rope from slipping off during an earthquake.

An embodiment of this invention will be described below with reference to FIGS. 2 and 3.

In the figure, the same symbols as in Figure 1 indicate the same parts, and 10
is a first blocking body formed by bending a steel plate to form a U-shape, one side of the U-shaped horizontal stroke is placed on the side of the main body 2, and a long hole 10a is provided in this part in the horizontal direction,
A blocking surface 10b is formed on the inner surface of the U-shaped vertical stroke facing the circumferential surface of the drive sheave (4), and a long hole 10c is provided in the horizontal direction on the other side of the U-shaped horizontal stroke. 1
0' is a second blocking body similar to the first blocking body, with elongated hole 1
0'a, 10'c, and a blocking surface 10'b are provided. 11 is inserted into the elongated holes 10a and 10'a and screwed into the frame 2 to form the first and second blocking bodies 1.
Bolts that fix 0 and 10' to the frame 2, respectively,
12 is a fastener consisting of a bolt inserted into the elongated holes 10c and 10'c and a nut screwed into the bolt;
First and second blocking bodies 10, 1 arranged in a polymerized state
0' ends are fastened together.

That is, the first and second blocking bodies 10, 10' are arranged so as to surround the drive sheave 4, and the blocking surfaces 10b, 1
0'b are the circumferential surface of the driving sheave 4 and the main rope 7, respectively.
located close to. This blocking surface 10b,1
0'b can prevent the main rope 7 from deviating from the driving sheave 4 due to an earthquake. Also, the first
Since the second blocking bodies 10, 10' are simple and attached to the frame 2, they can be manufactured at low cost, can be arranged in a well-organized manner, and can be easily installed even in a narrow space. Furthermore, drive sheaves 4 of different diameters are attached to one type of hoisting machine in order to obtain different speeds. Therefore, the blocking surfaces 10b, 10'b can be easily moved to correspond to each drive sheave 4, and the number of types of parts can be reduced and manufacturing can be done at low cost.

As explained above, this invention consists of a block that is fastened to the main body of the hoist on one side, faces the circumferential surface of the drive sheave and the main rope, and is movable in the radial direction of the drive sheave on the other side. A fastener comprising a plurality of blocking bodies having surfaces, whose blocking surfaces are bent and extended and overlapped with each other, and which are arranged to face each other, and the overlapping parts of these blocking bodies are fastened together through elongated holes. This is to prevent the main rope from deviating from the driving sheave due to an earthquake. As a result, it can be manufactured at low cost and can be easily installed even in narrow spaces.The overall strength of the blocking body is increased by overlapping and fastening the blocking surface extensions, which reliably prevents the main rope from slipping. The present invention provides an elevator hoisting machine equipped with a blocking body that can be easily adapted to drive sheaves of different types.

[Brief explanation of the drawing]

Fig. 1 is a conceptual diagram of an elevator system showing a conventional elevator hoisting machine, Fig. 2 is a plan view showing an embodiment of the elevator hoisting machine according to this invention, and Fig. 3 is a plan view of the main part of Fig. 2. It is. 2...Structure, 4...Driving sheave, 7...Main rope, 1
0...First blocking body, 10'...Second blocking body, 10
b, 10'b...blocking surface, 10c, 10'c...elongated hole, 12...fastener, and the same or equivalent parts in the drawings are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] In a device having a driving sheave around which a main rope is wound and a frame on which this driving sheave is installed, a blocking surface is formed opposite to the circumferential surfaces of the main rope and driving sheave, and one end of this blocking surface is formed. The driving sheave is bent along the body surface and fastened to the body so as to be displaceable in the radial direction of the driving sheave, and the other end of the blocking surface is bent and extended toward the center of the driving sheave so that the driving sheave is connected to the body. a plurality of blocking bodies arranged opposite to each other with long holes provided in the radial direction at the superposition points; and a plurality of blocking bodies are inserted into the long holes of these blocking bodies to fasten the blocking bodies to each other. An elevator hoisting machine characterized in that it is equipped with a fastener.