JPS63696Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of a traction type elevator drive device.

First, a conventional elevator drive device will be explained with reference to FIGS. 1 and 2.

In the figure, 1 is a support made of a beam installed in the upper machine room of the elevator, and 2 is a support 1 with anti-vibration rubber 3.
2a is a drive sheave of this hoist, 4 is a deflection sheave pivotally supported by the support 1 and placed horizontally apart from the drive sheave 2a, and 5 is a drive sheave. The main rope is wound around the wheel 2a and the deflection sheave 4, 6 is a cage having a hanging sheave 6a, around which the driving sheave 2a side of the main rope 5 is wound, 7 is a hanging wheel 7a.
8 is a counterweight around which the deflection sheave 4 side of the main rope 5 is wound; 8 is a rope stop plate provided on the support 1 to hold the end of the main rope 5 on the drive sheave 5 side; 9 is a rope stopper provided on the deflection sheave 4 side of the main rope 5 and held on the support body 1.

That is, the hoist 2 is supported by the support 1 in a vibration-proof manner, and the car 6 and the counterweight 7 are each mounted on a hanging wheel 6.
It is suspended from the main rope 5 via a and 7a. In such a configuration, the load due to the weight of the hoist 2 and the tension of the main rope 5 is distributed evenly around the center of gravity of the hoist 2 to the vibration isolating rubber 3 placed at the four corners of the hoist 2. It is necessary to arrange the vibration isolating rubber 3 at the position where it acts. On the other hand, the center of gravity of the hoist 2 is the driving sheave 2a.
Since the main rope 5 hanging down from the deflector wheel 4 is located almost at the center of the main rope 5 hanging down from the deflection wheel 4, in order to equalize the load on the vibration isolating rubber 3, the vibration isolating rubber 3 on the deflection wheel 4 side must be moved from the deflection wheel 4. It will be placed outside. As a result, the bed of the hoisting machine 2 becomes large, resulting in an increase in manufacturing costs. Further, when the deflection wheel 4 is installed close to the wall of the machine room, there is a problem in that it becomes difficult to install the vibration isolating rubber 3 on the side of the deflection wheel 4.

This invention solves the above-mentioned drawbacks by providing an elevator drive device in which the hoisting machine can be made smaller and in which vibration-proof rubber can be arranged at positions where the load is evenly applied.

An embodiment of this invention will be described below with reference to FIGS. 3 and 4.

In the figure, the same reference numerals as those in Figures 1 and 2 indicate corresponding parts, and 3 the one on the side of the spiral sheave 4 is a vibration isolator placed near the driving sheave 2a, and 8 is the anti-vibration rubber placed on the bed of the hoist 2. This is a rope stopper that holds the end of the main rope 5 on the drive sheave 2a side.

That is, since the end of the main rope 5 on the drive sheave 2a side is held on the bed of the hoist 2, the center position of the load acting on the hoist 2 is at the main rope 5 hanging down from the drive sheave 2a. The main rope 5 hanging down from the deflection sheave 4 moves from an intermediate position to the driving sheave 2a side. For this reason,
The anti-vibration rubber 3 on the side of the deflection sheave 4 is arranged closer to the driving sheave 2a so that the load can be borne evenly. Therefore, the hoisting machine 2 can be downsized and manufactured at low cost, and the anti-vibration rubber 3 can be easily installed, making it possible to reduce installation costs.

As explained above, this device hoists the end of the main rope that is wrapped around the drive sheave and deflector sheave of the hoisting machine supported via anti-vibration rubber and suspends the car via the hanging sheave. It was held on the machine. As a result, the center position of the load acting on the hoisting machine that suspends a car, etc. moves from between the drive sheave and the deflection sheave to the drive sheave, allowing it to be placed at the four corners even if the hoisting machine bed is downsized. The load can be applied evenly to the anti-vibration rubber, making it possible to downsize the hoist and manufacture it at low cost.Also, the anti-vibration rubber on the deflection wheel side can be installed closer to the drive sheave, making it more effective for anti-vibration. The objective is to realize an elevator drive device in which rubber can be easily installed and can be installed at low cost.

[Brief explanation of the drawing]

Fig. 1 is a conceptual longitudinal sectional view of the main parts of an elevator system showing a conventional elevator drive system, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is equivalent to Fig. 1 showing an embodiment of the elevator drive system according to this invention. Figure 4 is the third
FIG. DESCRIPTION OF SYMBOLS 1...Support body, 2...Hoisting machine, 2a...Drive sheave, 3...Vibration isolating rubber, 4...Deflection wheel, 5...Main rope, 6...Cage, 6a...Hanging wheel, 7... Counterweight, 8... Rope stopper (driving sheave side), 9...
Rope stop (on the deflection wheel side). In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A hoist having a drive sheave and supported by a support via anti-vibration rubber to drive an elevator car and a counterweight, and a hoist that is pivotally supported by the support and located apart from the drive sheave. a diversion sheave, the end of which is wound around the driving sheave and the diversion sheave and which is on the side of the diversion sheave is connected to a rope hoist held by the support to suspend the suspension sheave of the counterweight; and a main rope whose end on the driving sheave side is connected to a rope stopper held on the hoisting machine to suspend the hanging sheave of the car.