JP-2026075319-A - Hoisting machines and elevators

Abstract

[Problem] To provide a hoisting machine and elevator that can prevent damage to the lining. [Solution] The hoisting machine comprises a drive sheave, a braked body that rotates together with the drive sheave, and an electromagnetic brake device that brakes the rotational movement of the braked body and the drive sheave. The electromagnetic brake device has a brake shoe 15 that approaches and moves away from the braked surface of the braked body, and a plurality of linings 16 provided on one surface of the brake shoe 15 facing the braked surface and in contact with the braked surface. The plurality of linings 16 are arranged so as to avoid the locations of fixing holes 34 provided on the brake shoe 15 that face the braked body. [Selection Diagram] Figure 8

Inventors

• 芹澤 良輔

Assignees

• 株式会社日立製作所

Dates

Publication Date

20260508

Application Date

20241022

Claims (6)

1. The drive sheave around which the elevator rope is wound, A braked body that rotates together with the drive sheave, The system includes an electromagnetic brake device for braking the rotational movement of the braked body and the drive sheave, The aforementioned electromagnetic brake device, A brake shoe that moves toward and away from the braking surface of the braked body, The brake shoe has a plurality of linings provided on one surface facing the surface to be braked, which contact the surface to be braked, A hoisting machine in which the multiple linings are arranged to avoid the locations of the fixing holes provided in the brake shoe on the braked body.
2. The hoisting machine according to claim 1, wherein the lining is formed in a rectangular shape and its longitudinal direction is arranged parallel to the rotation direction of the braked body.
3. The hoisting machine according to claim 2, wherein the plurality of linings are arranged in a direction perpendicular to the direction in which the braked body rotates.
4. A positioning member is arranged at a location in the brake shoe opposite to a fixing hole provided in the braked body, according to claim 1.
5. The braked body is a drum on which multiple magnets are fixed to the inner wall surface. A fixing bolt for fixing the magnet is inserted into the fixing hole, as described in claim 1.
6. A car that moves up and down within the elevator shaft, The rope connected to the aforementioned elevator car, The vehicle is equipped with a hoisting machine that raises and lowers the elevator car via the aforementioned rope, The aforementioned hoisting machine is, A drive sheave around which the aforementioned rope is wound, A braked body that rotates together with the drive sheave, The system includes an electromagnetic brake device for braking the rotational movement of the braked body and the drive sheave, The aforementioned electromagnetic brake device, A brake shoe that moves toward and away from the braking surface of the braked body, The brake shoe has a plurality of linings provided on one surface facing the surface to be braked, which contact the surface to be braked, The multiple linings are arranged to avoid the locations of the fixing holes provided in the brake shoe on the braked body.

Description

This invention relates to a hoisting machine and an elevator. Conventionally, an elevator comprises a car, a counterweight, a rope connecting the car and the counterweight, and a hoisting machine around which this rope is wound. The hoisting machine includes a drive sheave around which the rope is wound, and a braked body that rotates with the drive sheave. Furthermore, the hoisting machine is equipped with an electromagnetic brake device that brakes the drive sheave by braking the rotation of the braked body. Furthermore, regarding electromagnetic braking devices, there are technologies such as those described in Patent Document 1. Patent Document 1 describes a hoisting machine for raising and lowering an elevator car that includes a brake drum, brake shoes for applying braking force to the brake drum, a movable iron core for driving the brake shoes, a braking spring for driving the movable iron core, and an electromagnetic coil for attracting the movable iron core against the spring force of the braking spring. In recent years, with the trend towards thinner hoisting machines, there has also been a demand for thinner brake drums, which are the braked components. Japanese Patent Publication No. 2014-223970 This is a schematic diagram showing an elevator according to the first embodiment.This is a front view showing a hoisting machine according to the first embodiment.This is a longitudinal cross-sectional view showing a hoisting machine according to the first embodiment.This is a perspective view showing the drum of a hoisting machine according to the first embodiment.This is a perspective view showing the drum of a hoisting machine according to the first embodiment.This is a plan view showing the electromagnetic brake device of a hoisting machine according to the first embodiment.This is a plan view showing the electromagnetic brake device of a hoisting machine according to the first embodiment.This is a plan view showing the brake shoe and lining of the electromagnetic brake device in a hoisting machine according to the first embodiment.This is a plan view showing the brake shoe and lining of the electromagnetic brake device in a hoisting machine according to the first embodiment, and also showing other arrangement examples of the lining.This is a front view showing a hoisting machine according to a second embodiment.This is a side view showing a hoisting machine according to a second embodiment. The hoisting machine and elevator according to the embodiment will be described below with reference to Figures 1 to 11. Note that common components in each figure are denoted by the same reference numerals. 1. First Embodiment Example 1-1. Elevator Configuration First, the configuration of the elevator according to the first embodiment example (hereinafter referred to as "this example") will be described with reference to Figure 1. Figure 1 is a schematic diagram showing an example of the elevator configuration in this example. [Elevator] The elevator 1 in this example is a so-called machine-room-less elevator, which does not have a machine room above the hoistway 100 formed within the building structure. While this example describes an example using a machine-room-less elevator, it is not limited to this, and an elevator with a machine room above the hoistway 100 may also be used. As shown in Figures 1 and 2, the elevator 1 comprises a car 110 that moves up and down within the hoistway 100, a hoisting machine 120, a counterweight 130, a first driven pulley 140, a second driven pulley 150, and a rope 170. A lifting pulley is provided at the bottom of the elevator car 110. The elevator car 110 is guided by a pair of elevator car guide rails to move up and down within the hoistway 100. The pair of elevator car guide rails are installed within the hoistway 100, with the elevator car 110 in between, and extend vertically within the hoistway 100. A pulley is provided at the top of the counterweight 130. The counterweight 130 is guided by a pair of weight guide rails and moves up and down within the hoistway 100. The pair of weight guide rails are installed within the hoistway 100, with the counterweight 130 in between, and extend vertically within the hoistway 100. The hoisting machine 120 is located at the bottom of the hoistway 100 and raises and lowers the elevator car 110 and counterweight 130 in a bucket-and-loop manner via the rope 170. The first driven pulley 140 and the second driven pulley 150 are fixed to the top of the hoistway 100. One end and the other end of the rope 170 are fixed to the top of the hoistway 100. The rope 170 is mounted from the counterweight pulley on the counterweight 130 to the first driven pulley 140, and then wound around the hoisting machine 120, the second driven pulley 150, and the elevator car 110's lifting pulley in that order. [Hoisting machine] Next, the configuration of the hoisting machine 120 will be explained with reference to Figures 2 and 3. Figure 2 is a front view sh