Machine for driving a lift

Patent metadata

Field	Value
Publication number	US-10005644-B2
Application number	US-201414763658-A
Country	US
Kind code	B2
Filing date	Jan 22, 2014
Priority date	Jan 25, 2013
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

An electrical machine for driving a pulley, including: a shaft whereon the pulley is mounted; a motor for driving the shaft; at least one brake; a first front bearing for supporting the motor, the first front bearing being arranged on one side of the pulley, carrying a front ball bearing and being supported by at least one damping element; and a second front bearing arranged on the opposite side, carrying at least one ball bearing and supported by at least one damping element. The machine does not contain a rigid connection between the first front bearing for supporting the motor and the second front bearing.

First claim

The invention claimed is:

1. Electrical machinery for driving a pulley, including:
a shaft on which the pulley is mounted,
a motor for driving the shaft,
one or more brakes,
a first front bearing supporting the motor, disposed on one side of the pulley, between the pulley and the motor, the first front bearing carrying a front rolling bearing and supported by one or more damper elements, and
a second front bearing, disposed on an opposite side of the pulley, carrying at least one rolling bearing and supported by one or more damper elements,
wherein there is no rigid connection between the first front bearing supporting the motor, and the second front bearing.

2. Machinery according to claim 1 , wherein the motor includes a rear bearing carrying a rear rolling bearing.

3. Machinery according to claim 2 , wherein the one or more brakes is supported by the rear bearing.

4. Machinery according to claim 1 , wherein the one or more brakes is supported by the second front bearing.

5. Machinery according to claim 1 , wherein all the brakes are disposed on the same side of the second front bearing.

6. Machinery according to claim 1 , including a plurality of brakes.

7. Machinery according to claim 1 , wherein the second front bearing carries a rolling bearing of a two-row type.

8. Machinery according to claim 1 , wherein the second front bearing carries a rolling bearing of a single-row type.

9. Machinery according to claim 1 , wherein the second front bearing carries two separate rolling bearings.

10. Machinery according to claim 1 , including a balance disposed so as to measure a displacement of the machinery induced by a load weighing down the damper element or elements.

11. Machinery according to claim 1 , having no casing around the pulley.

12. Machinery according to claim 1 , wherein the first front bearing supports the motor and the second front bearing rests on a common base.

13. Machinery according to claim 1 , wherein the one or more damper elements is constituted by studs including an elastomer block.

14. Method of driving a lift, using the machinery according to claim 1 , wherein the pulley drives cables or a belt connected to a lift car.

Assignees

• Leroy Somer Moteurs

Inventors

• Vincent Benoit
• Carriot Pascal
• Beynaud Pascal

Classifications

• H02K7/083

  radially supporting the rotary shaft at both ends of the rotor (H02K7/086, H02K7/09 take precedence) · CPC title

• B66B11/043

  actuated by rotating motor; Details, e.g. ventilation (roping on drum, sheave, winch or pulley B66B11/0065; power supply or control B66B1/28, H02P; motor construction H02K) · CPC title

• B66B11/04 Primary

  Driving gear {; Details thereof, e.g. seals (braking devices acting on the driving gear B66B5/02; of mining-hoist winding devices B66B15/08)} · CPC title

• H02K5/1732

  radially supporting the rotary shaft at both ends of the rotor (H02K5/1737 takes precedence) · CPC title

• H02K7/1008

  structurally associated with the machine rotor (H02K7/1012 takes precedence) · CPC title