JP4455042B2 - Elevator hoisting machine - Google Patents

Description

  In the present invention, the housing and the stator winding of the electric motor are integrally formed, the rotor of the electric motor corresponding to the stator winding is formed integrally with the driving sheave, and the direction along the rotational axis of the driving sheave The present invention relates to an elevator hoisting machine composed of a hoisting machine having a short outer dimension.

  In a conventional elevator hoisting machine, a stator winding is provided inside the outer periphery of the housing, a support plate is mounted across the opening on one side of the side, and a shaft body is provided on the side opposite to the support plate of the housing. Is provided. The rotating body is pivotally attached to the shaft body, and an armature facing the stator winding is provided on the outer peripheral surface on one side in the axial direction of the shaft body, and a brake drum is formed on the inner peripheral surface facing the armature. In addition, a sheave is formed on the other side in the axial direction of the shaft body.

  The electromagnetic brake is an internal expansion drum brake, which is disposed on a stationary iron core mounted on a support plate, a movable iron core attracted to the stationary iron core and a movable iron core, and is arranged to face the brake drum of the rotating body for braking. It consists of a brake shoe biased by a spring. Further, the electromagnetic brake is mounted on the support plate and disposed at symmetrical positions around the shaft body of the housing. And the winding machine is comprised by making a housing, a support plate, a shaft body, a rotary body, and an electromagnetic brake into the principal part. (For example, refer to Patent Document 1).

JP 2000-289954 A (summary, FIG. 2)

  In the electromagnetic brake provided in the hoisting machine, the suction of the movable iron core by the movable iron core is released when the hoisting machine is de-energized, and the brake shoe is pressed against the brake drum by the brake spring to brake the rotating body. Further, when the hoisting machine is energized, the movable iron core is sucked against the pressing force of the brake spring, the brake shoe is separated from the brake drum, and the braking action is released. In the conventional elevator hoisting machine, by increasing the size of the electromagnetic brake, the suction performance of the brake shoe can be increased, that is, the pressing force of the braking spring can be increased, and the required braking performance can be obtained.

  However, in the inner expansion type drum brake, the size of the electromagnetic brake is limited by the length of the brake drum diameter. For this reason, there is a problem in that the suction performance of the brake shoe is limited and the pressing force of the braking spring cannot be increased, and the required braking performance cannot be obtained. In addition, there are problems in that two large electromagnetic brakes arranged around the shaft of the housing are manufactured and assembled on the support plate, which is troublesome and requires a long work.

  The present invention has been made to solve such problems, and an object thereof is to obtain an elevator hoisting machine that has a simple configuration and can easily obtain a required strength and a required braking capacity of an electromagnetic brake. And

In the elevator hoisting machine according to the present invention, an opening is provided on one side of the side and a stator winding is provided on the inner side of the outer periphery, and the housing is disposed across the opening of the housing. A support body having both ends fastened to the outer periphery of the housing, a main shaft provided between the housing and the support, and an outer peripheral surface on one side in the axial direction of the main shaft that is disposed in the housing and pivotally attached to the main shaft An armature facing the stator winding, a brake drum is formed on the inner peripheral surface facing the armature, and a rotating body provided with a sheave on the other side in the axial direction of the main shaft, fixed iron core, both ends provided with a coil of the stationary core, each facing the opposite ends arranged movable core of the fixed iron core, the movable iron end of the main shaft is supported at its central portion disposed within the housing An electromagnetic brake consisting provided on the brake spring and the movable iron core to urge the brake drum direction from the brake shoe which is disposed facing to the brake drum, is provided, and the support and the fixed core are formed integrally It is .

  In the elevator hoisting machine according to the present invention, the load due to the main rope of the elevator acts on the main shaft through the sheave, and the load acting on the main shaft is a strong and stable configuration by the support body configured integrally with the housing and the fixed iron core. Supported by. As a result, it is possible to minimize the deflection and swinging of the spindle that supports the load, and to stabilize the operation of the hoisting machine. Moreover, the fixed iron core of the electromagnetic brake which forms an inner expansion type drum brake is comprised integrally with a support body.

  For this reason, the volume of the fixed iron core can be increased, and the suction force of the fixed iron core can be increased without increasing the outer shape of the hoisting machine. As a result, it is possible to increase the pressing force of the brake shoe by the braking spring, increase the braking force of the electromagnetic brake, and achieve an effect of realizing a hoisting machine having an electromagnetic brake having a stable braking ability.

Embodiment 1 FIG.
1 to 3 are diagrams showing an embodiment of the present invention. FIG. 1 is a front view, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is an enlarged view of a main part of FIG. FIG. In the figure, an opening 2 is provided on one side of the side surface of the housing 1, and a stator winding 4 is provided inside the outer peripheral portion 3. Moreover, the support body 5 is arrange | positioned across the opening part 2 of the housing 1, and both ends are fastened by the fastener 6 which consists of a volt | bolt to the outer peripheral part 3 of the housing 1, respectively.

  The main shaft 7 is provided between the center of the side surface of the housing 1 and the center of the support 5. A rotating body 8 is disposed in the housing 1 and pivotally attached to the main shaft 7, and an armature 9 facing the stator winding 4 is provided on the outer peripheral surface on one side in the axial direction of the main shaft 7. A brake drum 10 is formed on the inner peripheral surface facing 9, and a sheave 11 is provided on the other side in the axial direction of the main shaft 7. The fixed iron core 12 is formed integrally with the support 5 and is disposed at symmetrical positions around the main shaft 7, and the fixed iron core 12 is provided with a coil 13.

  In addition, a movable iron core 14 is disposed so as to face the fixed iron core 12, and a braking spring 15 that urges the movable iron core 14 toward the brake drum 10 is provided. Further, the brake shoe 16 is disposed so as to face the brake drum 10 and is composed of a screw rod. Both ends of the brake shoe 16 are screwed into the movable iron core 14 and the brake shoe 16 so that the position of the brake shoe 16 can be adjusted with respect to the movable iron core 14. A mounting tool 17 to be mounted is provided. In addition, the electromagnetic brake 18 which consists of an internal expansion type drum brake is comprised by using the fixed iron core 12, the coil 13, the movable iron core 14, the brake spring 15, and the brake shoe 16 as main members.

  In the elevator hoisting machine configured as described above, when the electric motor including the fixed iron core 12 and the movable iron core 14 is de-energized, the coil 13 of the electromagnetic brake 18 is also de-energized, and the movable iron core 14 is moved by the braking spring 15. It is urged toward the brake drum 10. As a result, the brake shoe 16 is pressed against the brake drum 10 and the rotating body 8 is braked. And when raising / lowering an elevator, an electric motor is energized and a hoisting machine operates.

  At this time, the coil 13 of the electromagnetic brake 18 is energized, and the movable iron core 14 is attracted against the energizing force of the brake spring 15, whereby the brake shoe 16 is separated from the brake drum 10 to brake the rotating body 8. Is released. And the load by the main rope (not shown) of an elevator acts on the main shaft 7 via the sheave 11, and the load acting on the main shaft 7 is strong and stable by the support body 5 that is configured integrally with the housing 1 and the fixed iron core 12. Supported by the configuration.

  As a result, it is possible to minimize the bending and swinging of the main shaft 7 caused by the load on the main rope acting on the main shaft 7 via the rotating body 8, and to operate the hoisting machine in a stable state. be able to. The braking force of the electromagnetic brake 18 is determined by the pressing force of the braking spring 15, and a stable braking force can be obtained by increasing the pressing force. However, it is necessary to suck the movable iron core 14 against the pressing force of the brake spring 15, and it is necessary to increase the suction force by the fixed iron core 12 and the coil 13, and the suction force is increased by enlarging the fixed iron core 12. Can be increased.

  The electromagnetic brake 18 is an inner expansion drum brake. In the configuration of the inner expansion drum brake, the size of the fixed iron core 12 is limited by the diameter length of the brake drum 10. However, since the fixed iron core 12 is formed integrally with the support 5, the volume of the fixed iron core 12 can be increased. Therefore, the suction force of the fixed iron core 12 can be increased without increasing the outer shape of the hoisting machine, thereby increasing the braking force of the electromagnetic brake 18 and obtaining a stable braking ability.

1 is a front view showing Embodiment 1 of the present invention. The longitudinal cross-sectional view of FIG. The figure which expands the principal part of FIG. 1 and shows a part longitudinally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing, 2 Opening part, 3 Outer part, 4 Stator winding, 5 Support body, 7 Spindle, 8 Rotating body, 9 Armature, 10 Brake drum, 11 Sheave, 12 Fixed iron core, 13
Coil, 14 movable iron core, 15 brake spring, 16 brake shoe, 18 electromagnetic brake.

Claims (1)

A housing in which an opening is provided on one side of the side surface and a stator winding is provided inside the outer periphery;
A support body disposed across the opening of the housing and having both ends fastened to the outer periphery of the housing, and
A main shaft provided between the housing and the support;
An armature disposed in the housing and pivotally attached to the main shaft and facing the stator winding is provided on an outer peripheral surface on one side in the axial direction of the main shaft, and a brake is provided on the inner peripheral surface facing the armature. A rotating body in which a drum is formed and a sheave is provided on the other side in the axial direction of the main shaft;
The arranged in the housing fixed iron core end of the spindle is supported at its central portion, on both ends provided with a coil of the stationary core, both ends respectively arranged movable iron core opposite the of the fixed iron core, the movable iron core and a electromagnetic brake comprising a brake shoe braking springs and provided to the movable iron core arranged facing to the brake drum to bias the brake drum direction,
The elevator hoisting machine, wherein the support and the fixed iron core are integrally formed .

Images