JP2002101615A - Elevator winch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator winch small, easily materializing desired cooling, at a low cost and enables to easily install it in a narrow stairway. SOLUTION: A stator 3, a rotor 5 which forms a drive rope pulley 7 on one side and a braking device 8 which brakes the rotor 5 when required are provided in a housing 1 of an enclosed structure. Stationary side heat pipes 16 for heat radiation are provided penetrating the housing 1 and rotary side heat pipes 17 for heat radiation are provided penetrating the rotor and dispose them at respective positions corresponding to air holes 15. With this heat within the housing 1 is released by the stationary side heat pipe 16 and heat within the rotor 5 is released by the rotary side heat pipe 17. Therefore heat generated by a motor, the braking device 8, and the like within the housing 1 of the enclosed structure is efficiently released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoist for an elevator, which is small and mainly installed in a hoistway, and drives a main rope which suspends a hoist such as a car.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show a conventional elevator hoisting machine. FIG. 3 is a front view, and FIG. 4 is a side view of FIG. In the drawing, 1 is a housing having an opening formed on one side, 2 is a back plate mounted over the opening of the housing 1, 3 is a stator provided on an inner surface of an edge of the housing 1 on the opening side, 4 is the housing 1
Is a support shaft erected inside the housing 1 from the side opposite to the open portion.

[0003] Reference numeral 5 denotes a rotor pivotally supported by a support shaft 4. A rotor permanent magnet 6 is provided on an edge portion facing the stator 3, and a drive sheave 7 is provided on the side of the housing 1 opposite to the open portion. Reference numeral 8 denotes a brake provided on the back plate 2 and disposed opposite to an inner surface of the rotor 5 on the side of the rotor permanent magnet 6, 9 denotes a rotation speed detector provided on the back plate 2 and driven by the rotor 5, 10 Are mounting legs provided on the side of the housing 1 opposite to the opening.

[0004] Reference numeral 11 denotes a plurality of ventilation holes provided apart from each other around a position corresponding to the rim surface of the drive sheave 7 of the housing 1, and 12 denotes a fixed body formed in a hoistway (not shown) of an elevator. It is arranged corresponding to the leg 10 and supports the housing 1 via the vibration isolator 13. Reference numeral 14 denotes a main rope connected to an elevating body (not shown) such as an elevator car, which is inserted through an insertion hole provided in the housing 1 and wound around the drive sheave 7.

[0005] The conventional hoisting machine for an elevator is constructed as described above, and the electric motor including the stator 3 and the rotor permanent magnet 6 is energized to rotate the drive sheave 7 and to be wound around the drive sheave 7. The main rope 14 is driven to move the lifting body up and down.
Then, the outside air flows from the arrow a to the arrow b shown in FIG. 3 through the ventilation hole 11 of the housing 1 so as to radiate heat generated by operation of the electric motor.

[0006]

In the conventional elevator hoist described above, the cooling effect of the hoist obtained by the circulation of the outside air through the ventilation hole 11 of the housing 1 is insufficient. For this reason, the size of the hoist is increased due to thermal margins, which increases the cost of manufacturing the hoist. In addition, it is necessary to expand the hoistway installation space, and the hoistway in a building where an elevator is installed However, there was a problem that the construction cost increased.

An elevator in which a hoist is installed in a hoistway, that is, an elevator without a machine room, is often equipped with a hoist having a structure that is flat in the longitudinal direction of the rotation axis of the drive sheave 7. . In addition, since the hoist is installed in the hoistway, it is required that the entire hoist be hermetically sealed in order to prevent the operation noise from being transmitted to the car. In response to such a demand, a hoisting machine becomes large as a result of a design having a thermal margin.

The present invention has been made to solve such a problem, and an object of the present invention is to realize a small-sized elevator hoisting machine which can easily obtain a required cooling action.

[0009]

In an elevator hoist according to the present invention, a stator provided in a closed housing and a stator provided in the housing and opposed to the stator are provided. A rotor with a drive sheave on the side, a brake provided in the housing and braking the rotor when necessary, a stationary heat pipe for heat dissipation mounted through the housing, and a A heat-dissipating rotating-side heat pipe is provided and provided corresponding to the ventilation hole provided in the housing.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 and 2
FIG. 1 is a view showing an example of an embodiment of the present invention. FIG. 1 is a front view, and FIG. 2 is a side view of FIG. In the drawing, reference numeral 1 denotes a housing having an opening formed on one side,
2 is a back plate mounted over the open portion of the housing 1;
Is a stator provided on the inner surface of the edge of the housing 1 on the opening side, and 4 is a housing 1
It is a support shaft erected inside.

Reference numeral 5 denotes a rotor pivotally supported by a support shaft 4. A rotor permanent magnet 6 is provided on an edge facing the stator 3, and a drive sheave 7 is provided on the side of the housing 1 opposite to the opening. Reference numeral 8 denotes a brake provided on the back plate 2 and disposed opposite to an inner surface of the rotor 5 on the side of the rotor permanent magnet 6, 9 denotes a rotation speed detector provided on the back plate 2 and driven by the rotor 5, 10 Are mounting legs provided on the side of the housing 1 opposite to the opening.

Reference numeral 11 denotes a peripheral surface ventilation hole, a plurality of which are provided apart from each other on the peripheral surface of the housing 1 at a position corresponding to the rim surface of the drive sheave 7. Numeral 12 denotes a fixed body formed on the hoistway (not shown) of the elevator, which is arranged corresponding to the mounting leg 10 and supports the housing 1 via a vibration isolator 13.

Reference numeral 14 denotes a main rope connected to an elevator (not shown) such as an elevator car, which is inserted through an insertion hole provided in the housing 1 and wound around the drive sheave 7. 1
Reference numeral 5 denotes a side ventilation hole, which is provided through the surface of the housing 1 facing the side of the drive sheave 7 and is provided with a plurality of them spaced apart from each other along the circumferential direction.

Reference numeral 16 denotes a stationary heat pipe for heat dissipation, which is provided through the side surface of the housing 1 facing the stator 3 and is disposed at a plurality of positions spaced apart from each other along the circumferential direction to remove heat in the housing 1. Release to the outside. A rotating heat pipe 17 for heat radiation is provided at a position corresponding to the side ventilation hole 15 through the side of the drive sheave 7, and a plurality of heat pipes are provided apart from each other along the circumferential direction, so that To the outside.

In the elevator hoist constructed as described above, the electric motor including the stator 3 and the rotor permanent magnet 6 is energized to rotate the drive sheave 7, and the main sheave wound around the drive sheave 7. The cable 14 is driven to move the lifting body up and down. Then, by the rotation of the drive sheave 7, an air flow is generated by the outside air from the side surface vent 15 of the housing 1 to the peripheral surface vent 11, that is, from the arrow c to the arrow b shown in FIG. 1.

The heat in the housing 1 is released to the outside by the stationary heat pipe 16, and the heat in the rotor 5 is released to the outside by the rotating heat pipe 17. Thus, heat generated by the operation of the electric motor including the stator 3 and the like generated in the closed housing 1 and the operation of the brake 8 can be efficiently released to the outside of the hoist.

Therefore, the required cooling action in the hoist can be easily obtained, and it is not necessary to increase the size of the hoist for thermal margin, and the hoist can be designed to be small. Manufacturing costs can be reduced. Further, since the hoist can be easily installed on the narrow hoistway, the construction cost of the hoistway in the building where the elevator is installed can be reduced.

[0018]

As described above, according to the present invention, a stator provided in a closed housing is provided.
A rotor provided in the housing and arranged opposite to the stator and provided with a drive sheave on one side, a brake provided in the housing and braking the rotor when necessary, and mounted through the housing A stationary heat pipe for heat dissipation and a rotary heat pipe for heat dissipation provided through the rotor and arranged corresponding to the ventilation hole provided in the housing are provided.

As a result, heat in the housing is released to the outside by the stationary heat pipe, and heat in the rotor is released to the outside by the rotating heat pipe. Therefore, the heat generated by the operation of the electric motor including the stator and the like generated in the closed housing and the operation of the brake can be efficiently released to the outside of the hoist. Therefore, the required cooling action in the hoist can be easily obtained, and the hoist can be designed in a small size, which has the effect of reducing the manufacturing cost. Further, since the hoist can be easily installed on the narrow hoistway, there is an effect of reducing the hoistway construction cost in the building where the elevator is installed.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view showing a conventional elevator hoist.

FIG. 4 is a side view of FIG.

[Explanation of symbols]

Reference Signs List 1 housing, 3 stator, 5 rotor, 7 drive sheave, 8 brake, 15 side vent (vent), 1
6 stationary heat pipe, 17 rotating heat pipe.

Claims (1)

[Claims] 1. A stator provided in a closed housing, a rotor provided in the housing, disposed opposite to the stator, and provided with a drive sheave on one side, and the housing. A brake for braking the rotor when necessary, a stationary heat pipe for heat dissipation provided through the housing, and a brake provided in the housing through the rotor. An elevator hoist including a heat-sinking rotary heat pipe arranged corresponding to pores.