WO2004000710A1

WO2004000710A1 - Elevator hoisting machine

Info

Publication number: WO2004000710A1
Application number: PCT/JP2002/006167
Authority: WO
Inventors: Masanori Yasue
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2002-06-20
Filing date: 2002-06-20
Publication date: 2003-12-31
Also published as: KR100571537B1; EP1514825A1; CN1543426A; EP1514825A4; KR20040030153A; DE60236216D1; CN1310820C; EP1514825B1; JPWO2004000710A1

Abstract

A rotary unit having a drive sheave is rotated around a main shaft in an elevator hoisting machine. The drive sheave and a brake drum are integrated with the rotary unit. A plurality of rotary unit side engagement portions are disposed on an end of the brake drum at an intervals from each other in the circumferential direction. A manual handle to manually rotate the rotary unit has a plurality of handle side engagement portions engaged with the rotary unit side engagement portions.

Description

Technical Manual Elevator Hoisting Machine

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator hoisting machine having a drive sheave around which a main rope is wound and for raising and lowering a car suspended on the main rope by rotation of the drive sheave. Background art

For example, Japanese Patent Publication No. 2000-3501548 discloses a conventional elevator machine. In this example, an engaging portion for engaging the manual winding handle is provided at the end of the rotating shaft. When the car is moved during the installation of the elevator or during a power outage, the hand-wound handle is engaged with the engaging part, the brake device of the hoist is released, and the rotating shaft is manually rotated by the hand-wound handle. . As a result, the drive sheave of the hoist is rotated, and the car is raised and lowered.

However, in recent years, with the spread of Invar overnight control, the number of hoists equipped with a speed detector at the end of the rotating shaft has increased. In such a winding machine, if an engaging portion is provided at the end of the rotating shaft, the hand-wound handle cannot be engaged with the engaging portion without removing the speed detector, which takes time and effort. .

If a speed detector is provided at one end of the rotating shaft and an engagement part is provided at the other end, space for maintenance and replacement of the speed detector is secured around one end, and around the other end. Needed to secure a work space with a handwheel. In particular, it was difficult to secure a wide space around the hoisting machine in the machine room-less elevator where the hoisting machine was installed in the hoistway.

Further, in a hoisting machine of a type in which a main shaft located at the center of rotation is fixed to a fixed portion, even if an engaging portion is provided at an end of the main shaft, the drive chip cannot be rotated. Disclosure SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and can reduce a maintenance space and can easily perform a manual rotation operation of a drive sheave. The purpose is to get a good opportunity.

An elevator hoisting machine according to the present invention has a main shaft, a drive sheave around which a main rope of the elevator is wound, a rotating portion rotated about the main shaft, and a motor for rotating the rotating portion. A brake device for braking the evening and the drive sheave is provided, and the rotating portion is provided with a plurality of rotating portion side engaging portions spaced apart from each other in a circumferential direction. It further includes a hand-wound handle having a plurality of handle-side engaging portions to be engaged and for manually rotating the rotating portion. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a rear view showing a state in which an elevator hoist according to an embodiment of the present invention is manually rotated,

Fig. 2 is a sectional view of the elevator of Fig. 1,

FIG. 3 is a front view showing another example of the rotating portion side engaging portion,

FIG. 4 is a front view showing still another example of the rotating portion side engaging portion. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a rear view showing a state in which an elevator hoist (gearless hoist) according to an embodiment of the present invention is manually rotated, and FIG. 2 is an elevator hoist in FIG. FIG.

In the figure, a case 1 has a case main body 2 fixed to a fixing portion, and a disc-shaped back plate 3 attached to the case main body 2. A spindle 4 is fixed to the center of the case body 2. A rotating part 5 that rotates about the main shaft 4 is attached to the main shaft 4 via a bearing 6.

The rotating section 5 has a cylindrical drive ship 7 and a cylindrical brake drum 8 as a brake rotating body. The drive sheave 7 and the brake drum 8 are

5 are integrally formed. The drive sheave 7 has several main ropes 9 T JP2002 / 006167 Wound. The main ropes 9 are respectively inserted into a plurality of rope grooves provided on the outer peripheral portion of the drive sheave 7.

The brake drum 8 has a first end 8a on which the drive sheave 7 is provided, and a second end 8b opposite to the first end 8a. . The second end 8b is provided with a plurality of cutouts 8c as rotating part side engaging parts. The notches 8 c are arranged at intervals in the circumferential direction of the brake drum 8. The notches 8 c are arranged symmetrically with respect to the main shaft 4. In this example, four notches 8c are provided at intervals of 90 degrees.

The brake drum 8 also serves as a motor rotor. A motor stator 10 is fixed to the inner peripheral surface of the case body 2 so as to face the outer peripheral surface of the brake drum 8. The motor 11 that rotates the rotating unit 5 has a brake drum 8 and a motor stator 10.

Inside the brake drum 8, a brake device main body 12 for braking the brake drum 8 is arranged. The brake device main body 12 is mounted on and supported by the back plate 3. The support structure of the brake device main body 12 is not shown. The brake device (electromagnetic brake) 13 for controlling the drive sheave 7 has a brake drum 8 and a brake device main body 12.

The back plate 3 is provided with a plurality of openings 3 a for maintaining the brake device body 12 from outside the case 1. During normal operation, the opening 3a is closed by a lid (not shown). As described above, since the brake device main body 12 is supported on the back plate 3, the opening 3a cannot be formed in a circular shape, but is divided into a plurality.

Therefore, when the opening 3 a is opened, a part of the end face of the second end 8 b of the brake drum 8 is always hidden by the back plate 3. However, when the opening 3a is opened, at least two notches 8c are exposed from the opening 3a regardless of the rotation angle of the brake drum 8.

The hand-wound handle 14 for manually rotating the rotating unit 5 includes a flat handle body 15 having first and second surfaces 15a and 15b opposed to each other, and a first surface 1 5a, a plurality of (a pair of) projections 16 as handle-side engaging portions that engage with the notches 8c, and a handle 17 provided on the second surface 15b. are doing. The handle body 15 has a length larger than the diameter of the case 1. It should be noted that the handle body 15 may be smaller than the case 1, but the handle 15 can be easily operated with a smaller force as the handle body 17 is larger and the handle 17 is farther from the main shaft 4. The hand-wound handle 14 is mounted on the rotating part 5 simply by inserting the projection 16 into the notch 8c, so that the hand-wound handle 14 can be easily attached to and detached from the rotating part 5. The hand-wound handle 14 is attached to the rotating part 5 only when necessary, and is removed from the rotating part 5 during normal operation and stored in a predetermined storage location.

At the end of the main shaft 4 on the side of the back plate 3, a speed detector 18 is provided. The speed detector 18 surrounds the end of the main shaft 4.

Next, the operation will be described. During normal operation of the elevator, the hand-wound handle 14 is detached from the rotating part 5, and the opening 3a of the back plate 3 is closed by the lid. Further, during maintenance and inspection of the brake device 13, the lid is removed and the opening 3a is opened. Further, when performing maintenance / replacement of the speed detector 18, the back plate 3 is removed from the case body 2.

In addition, if a malfunction occurs such as a current cannot flow through the motor stator 10 due to some abnormality, and the car carrying passengers stops between floors, the drive sheave 7 is manually rotated to move the car to the nearest floor. Move. In this case, the opening 3a is opened, and for example, as shown in FIG. 1, the hand-wound handle 14 is attached to the rotating part 5 (brake drum 8). Then, while rotating the brake device 13, the hand winding handle 14 is operated to rotate the rotating portion 5.

At this time, since the projection 16 interferes with the back plate 3, the hand-wound handle 14 cannot be continuously rotated. Therefore, for example, when the hand-wound handle 14 is rotated from the position indicated by the solid line in FIG. 1 to the position indicated by the two-dot chain line, the brake device 13 is closed, and the hand-wound handle 14 is removed from the rotating unit 5. Thereafter, the brake handle 14 is attached again at the position indicated by the solid line, and the hand-wound handle 14 is rotated while the brake device 13 is opened. By repeating such operations, the drive sheave 7 is gradually rotated, and the car is moved to the nearest floor.

In such an elevator, the notch 8c for engaging the hand-wound handle 14 is provided not in the main shaft 4 but in the rotating part 5, so that the main shaft 4 has a speed detector 18 Even when the speed detector 18 is mounted, the hand-wound handle 14 can be mounted from the same side as the speed detector 18. Therefore, the maintenance space can be concentrated on one side of the main shaft 4 in the axial direction, and the maintenance space to be secured can be reduced. Therefore, the elevator can be installed in a narrow space, and it is effective to apply it to a machine room-less elevator.

In addition, since the hand-wound handle 14 can be attached without removing the speed detector 18, the manual rotation of the drive sheave 7 can be performed more easily. Further, even when the main shaft 4 does not rotate, the drive sheave 7 can be manually rotated by the hand-wound handle 14.

Furthermore, since the notches 8 c are arranged symmetrically with respect to the main shaft 4, the rotating force from the hand-wound handle 14 rotates even though the hand-wound handle 14 is not supported by the main shaft 4. Part 5 can be communicated efficiently.

Furthermore, the notch 8 c is exposed from the maintenance opening 3 a of the brake device 13, so that the hand-wound handle 14 can be attached without removing the back plate 3. The workability of the manual rotation work of 7 can be improved. In addition, a notch 8c is provided at the second end 8b of the brake drum 8 by using the rotating portion 5 in which the drive sheave 7 and the brake drum 8 are integrally formed. The rotational force of the motor can be efficiently transmitted to the drive sheave 7.

Further, the work using the hand-wound handle 14 can be performed from the same side as the maintenance work of the brake device 13, so that the maintenance space can be reduced.

Furthermore, since the rotating portion side engaging portion is formed with the notch 8c and the handle side engaging portion is formed as the projection 16, the hand-wound handle 14 can be engaged with the rotating portion 5 with a simple configuration. In the above example, the notch 8c is shown as the rotating portion side engaging portion. However, as shown in FIG. 3, for example, a bolt hole 8e is formed on the end surface 8d of the brake drum 8 as the rotating portion side engaging portion. May be provided. In this case, the bolt holes 8e can be used for material handling during assembly in the factory.

In the above example, the notch 8c is provided on the inner peripheral surface side of the second end 8b, If the entire second end 8b is exposed from the back plate 3c, a notch 8f may be provided on the outer peripheral surface side of the second end 8b.

Further, in the above example, the opening 3a is divided into two, but the opening may be divided into three. In this case, the rotating portion side engaging portion may be arranged at the vertex of the equilateral triangle. Similarly, the present invention can be applied to a case where the opening is divided into four or more.

Furthermore, in the above example, the main shaft is fixed, but the present invention is also applicable to a hoisting machine in which the main shaft is rotated integrally with the rotating part.

Further, in the above example, the notch 8 c is provided in the brake drum 8 of the rotating part 5, but the rotating part side engaging part is used for rotating the brake of the rotating part such as a drive sheave or a motor rotor. It may be provided on a part other than the body.

Claims

The scope of the claims

1. Spindle,

A rotating sheave having a drive sheave around which the main rope of the elevator is wound, and rotated about the main shaft;

A motor for rotating the rotating part, and

Brake device for braking the above-mentioned drive ship

And a winder equipped with

The rotating part is provided with a plurality of rotating part side engaging parts at intervals in a circumferential direction,

An elevator hoisting machine having a plurality of handle-side engaging portions engaged with the rotating portion-side engaging portion, and further comprising a hand-wound handle for manually rotating the rotating portion.

2. The elevator machine according to claim 1, wherein the rotating portion side engaging portions are arranged symmetrically with respect to the main shaft.

3. It has an opening for maintaining the brake device, and further includes a case that houses the main shaft, the rotating portion, the motor, and the brake device, and the rotating portion side engaging portion extends from the opening The elevator machine according to claim 1, which is exposed.

4. The brake unit has a brake rotator that rotates integrally with the drive sheave, and a brake device main body that brakes the brake rotator,

The rotating part includes the brake rotating body,

The brake rotator has a first end provided with the drive sheave, and a second end located on the opposite side of the first end,

3. The hoisting machine according to claim 1, wherein the rotating portion side engaging portion is provided at the second end of the brake rotating body.

5. The brake rotating body is a cylindrical brake drum, and the brake 5. The hoisting machine according to claim 4, wherein a plurality of cutouts are provided at the second end of the drum as the rotating portion side engaging portion.

6. The reel winding machine according to claim 5, wherein the hand-wound handle is provided with a plurality of protrusions as handle-side engaging portions that engage with the notches.