JP2011016603A - Hoisting machine for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoisting machine for an elevator preventing falling-off of a rope from a sheave in ordinary operation, and manually rotating the sheave in an emergency.SOLUTION: This hoisting machine includes a hoisting machine body 10, the sheave 50, and an installation member 60 having an installation part 61 and an extension part 62 arranged by having a clearance with a rope groove 51 when the installation part is installed in a rope slipping-out preventive installation part and arranged outside in the rotational center of the sheave in the rotational axis direction when installed in an installation part 54 for a handle.

Description

The present invention relates to an elevator hoist. In particular, the present invention relates to an elevator hoisting machine that can prevent a rope from falling off from a sheave during normal operation and can manually rotate the sheave in an emergency without preparing a separate hand-wound handle. .

Conventional elevator hoisting machines are provided with a rope stopper in the vicinity of the rope wound around the sheave to prevent the rope from falling off the sheave during normal operation (see Patent Document 1). ). Specifically, Patent Document 1 discloses a rope presser that is attached to a fixed part of a hoisting machine by placing an appropriate gap outside the portion of the sheave on which the rope is wound. This rope retainer prevents the rope from falling off the sheave by restraining the rope from rising due to the vibration of the rope.

In the case of conventional elevator hoisting machines, when the elevator stops between floors due to a power failure or the like and passengers are trapped in the car, the hoisting machine is manually rotated to raise or lower the car to the nearest floor. I need to rescue the passengers. Patent Document 2 discloses a hand winding handle for manually rotating the hoisting machine in such an emergency. Specifically, the hand-wound handle of Patent Document 2 includes a receiving port that is inserted into a shaft end portion of an electric motor that drives the sheave, and a grip portion that can be gripped by hand (see FIGS. 9 and 9 of Patent Document 2). [0005] See paragraph). In case of emergency, manually rotate the sheave using a hand-wound handle prepared separately. Specifically, the sheave is rotated by inserting the receiving port of the hand-wound handle into the shaft end of the motor, gripping the grip portion by hand, and rotating the shaft of the motor.

51-99366 JP2000-351548

In such a conventional elevator hoisting machine, it is necessary to prepare a separate hand-wound handle for raising and lowering the car to the nearest floor in the event of an emergency, which increases the cost. .
In addition, the hand-wound handle of a conventional elevator hoisting machine is inserted into the shaft of the electric motor and rotates the shaft, so there is a problem that a large force is required to rotate the shaft by reducing the rotation radius, Also, when the turning radius is increased, the hand-wound handle itself becomes larger, which causes a storage problem. In order to solve the above-mentioned problems, the present invention can prevent the rope from falling off the sheave during normal operation and can manually rotate the sheave in an emergency without preparing a separate hand-wound handle. An object is to provide an elevator hoisting machine.
Another object of the present invention is to provide an elevator hoisting machine that can manually rotate a sheave with a smaller force in an emergency.

In order to achieve the above object, an elevator hoisting machine according to the present invention has a motor built-in, has a side plate from which the rotating shaft of the motor projects outward, and prevents the rope from coming off on the outer surface of the side plate. A hoisting machine body provided with a mounting portion for,
It is cylindrical and is fixed to the rotating shaft, and is provided with a rope groove portion on which the rope is wound around the cylindrical surface. One end surface is opposed to the outer surface of the hoisting machine body and the other end surface is a handle mounting portion. A sheave with
When the attachment part that can be attached to the attachment part for the rope detachment prevention and the attachment part for the handle, and the attachment part is attached to the attachment part for the rope detachment prevention that extends from the attachment part Mounting with the rope groove and a gap, and when mounted on the handle mounting portion, has an extending portion that is disposed in the direction of the rotation axis and outside the center of rotation of the sheave. And a member.

In the elevator hoisting machine according to the present invention, a plurality of the mounting portions for the handle are provided along a peripheral edge of the end surface of the sheave provided with the mounting portion for the handle. And

In the elevator hoisting machine according to the present invention, the mounting member is attached to the handle attaching portion in a state where the extending portion is directed outward in the radial direction of the sheave.

In the elevator hoisting machine according to the present invention, the other end surface of the sheave is provided with a groove into which the mounting portion of the mounting member is fitted.

In the elevator hoisting machine according to the present invention, the groove is provided so as to be directed in a radial direction of the sheave.

The elevator hoisting machine according to the present invention includes a hoisting machine main body having a motor and a side plate from which the rotating shaft of the motor projects outward, and a sheave fixed to the rotating shaft. Elevator hoisting machine
A substantially L-shape comprising a mounting portion that can be attached to the side plate and sheave of the hoisting machine, and an extending portion that extends substantially vertically at a position a distance a from a fixed point A that is a point where the mounting portion is attached. Having a mounting member,
The sheave has a cylindrical shape with a radius b, and a rope groove portion around which a rope with a diameter c is wound is provided on the cylindrical surface, one end face is opposed to the side plate of the hoisting machine main body, and the other end face is provided. Is provided with an attachment portion for the handle to which the attachment member can be attached so that the fixing point A of the attachment member is disposed at a position a distance a or more away from the center of the cylinder.
The hoisting machine main body has an outer surface of the side plate facing one end surface of the sheave, and an extending portion of the mounting member is disposed on the outer surface of the rotating shaft in a radial direction of the rotating shaft. An attachment portion for preventing the rope from coming off is provided toward the center so that the attachment portion of the attachment member can be attached, and the attachment portion for preventing the rope from coming off from the center of the rotation shaft along the radial direction of the rotation shaft. The mounting portion of the mounting member is attached so that the fixing point A of the mounting member is disposed in a range of distance (a + b) to (a + b + 75/100 · c).

Further, the elevator hoisting machine according to the present invention has a motor built-in, a hoisting machine main body having a side plate from which the rotating shaft of the motor projects outward, and is fixed to the rotating shaft. A sheave having a rope groove portion around which a rope is wound around a cylindrical surface, one end surface of which faces the side plate of the hoisting machine main body, and the other end surface is provided with a plurality of handle attachment portions along the circumferential edge of the circle. It is characterized by comprising.

Further, in the elevator hoisting machine according to the present invention, a mounting portion that can be attached to the handle attachment portion, and the rotating shaft that extends from the attachment portion and is attached to the handle attachment portion. And a mounting member having an extending portion arranged in a direction and outside the rotation center of the sheave.

In the elevator hoisting machine according to the present invention, the other end face of the sheave provided with the handle attachment portion is provided with a groove into which the attachment portion of the attachment member is fitted. .
Further, in the elevator hoisting machine according to the present invention, in the side plate of the hoisting machine, there is an attachment portion for preventing the rope from being attached to a surface facing the one end surface of the sheave. When the attachment portion of the attachment member is attached to the attachment portion for preventing the rope from coming off, the extending portion is disposed with a gap from the rope groove.

The mounting member provided in the present invention is attached to the hoisting machine main body during normal operation to prevent the rope from falling off the sheave, but in an emergency, it can be detached from the hoisting machine main body and attached to the sheave. it can. In an emergency, the worker can hold the mounting member attached to the sheave to rotate the sheave and move the car to the nearest floor. As a result, the present invention can reduce costs because it is not necessary to prepare and place a separate hand-wound handle for passively rotating the sheave in an emergency.
Further, the mounting member provided in the present invention is attached to the sheave in an emergency. Accordingly, the radius of the sheave can be used as the rotation radius, and the sheave can be rotated with a smaller force.

It is a figure which shows the structure of the winding machine for elevators which concerns on this invention. It is a figure explaining the state at the time of the normal driving | operation of the elevator hoisting machine which concerns on this invention, (a) is a side view, (b) is a front view. It is a figure which shows the mounting member of the elevator hoisting machine which concerns on this invention. A-A cross section of Fig. 2 (b) BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the emergency state of the elevator hoisting machine which concerns on this invention, Comprising: (a) is a side view, (b) is a front view. BB cross section of Fig. 5 (b)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In FIG. 1, 10 is a hoisting machine main body, 20 is an elevator car, 30 is a counterweight, 40 is a wheel, 50 is a sheave, and 60 is a mounting member. The sheave 50 is rotated by a motor (not shown) built in the hoisting machine main body 20. One end of the rope 55 wound around the sheave 50 is connected to the elevator car 20, and the other end is connected to the counterweight 30 via the sorase wheel 40. The elevator hoisting machine having such a configuration can raise and lower the elevator car 20 by rotating the sheave 50 with a motor.

Referring to FIG. 2, the rotating shaft 12 of the motor built in the hoisting machine main body 10 protrudes outward from the side plate 13 of the hoisting machine main body 10, and the sheave 50 is fixed to the protruding portion. The sheave 50 has a cylindrical shape, and the one end surface 52 faces the side plate 13 of the hoisting machine main body 10 (specifically, the outer side surface 13a of the side plate 13). In addition, the sheave 50 includes a rope groove 51 provided with a groove 51a around which a rope 55 is wound around a cylindrical surface as shown in FIG.

Referring to FIGS. 3 and 4, the mounting member 60 is substantially L-shaped, and includes a mounting portion 61 provided with a hole 63 and an extending portion 62 extending substantially vertically from the mounting portion 61. In the present embodiment, the mounting portion 61 is a quadrangle and the extending portion 62 is a rod shape, but the shape is not limited to this, and can be variously changed. Moreover, the hole 63 is for the fastening means 70, such as a bolt, to pass through in order to attach the mounting member 60 to the object. A plurality of holes 63 can be provided in the mounting portion 61 according to the design, and in this case, the mounting member 60 can be attached to an object more firmly.

The mounting member 60 can be attached to the hoisting machine main body 10 and the sheave 50 as shown in FIGS. 2 and 5. When attached to the hoisting machine main body 10, the attachment member 60 acts as a rope detachment preventing the rope 55 from falling off the sheave 50, and when attached to the sheave 50, the attachment member 60 is It acts as a handle for manually rotating the sheave 50. For this purpose, the side plate 13 of the hoisting machine main body 10 (specifically, the outer side surface 13a of the side plate 13) is provided with an attachment portion 14 for preventing the rope from coming off to which the attachment portion 61 of the attachment member 60 is attached. In addition, a handle attachment portion 54 to which the attachment portion 61 of the attachment member 60 is attached is provided on the other end surface of the sheave 50 opposite to the one end surface facing the side plate 13 of the hoisting machine main body 10. .

In this embodiment, the attachment part 14 for preventing the rope from coming off is a screw hole to which a bolt or the like can be fastened, and as shown in FIG. 3, the side plate 13 (specifically, the hoisting machine 10). The outer side surface 13a) of the side plate 13 is provided. A plurality of attachment portions 14 for preventing the rope from coming off can be provided. When the attachment member 60 is attached to the attachment portion 14 for preventing the rope from coming off, the extension portion 62 preferably has a length that covers the rope groove portion 51 of the sheave 50. Further, the extending part 62 is arranged to have a gap D with the rope groove part of the sheave 50. At this time, the gap D is determined in consideration of the diameter of the rope. For example, when the diameter of the rope is c as shown in FIG. 3, the rope is not dropped from the sheave 50 during normal operation if the extending portion is installed so that the gap D is 75/100 · c or less.

In addition, the position where the attachment portion 14 for preventing the rope from coming off is determined in consideration of the gap D between the extending portion 62 and the rope groove portion 51. For example, as shown in FIG. 3 and FIG. 4, the extending portion 62 (specifically, from the fixing point A which is the center of the hole 63 of the mounting member 60 (which becomes the fixing center when the mounting member 60 is attached by a bolt). Is the distance from the extension 62 to the point facing the rope groove 51 of the sheave 50), and the radius of the both ends of the sheave 50 is b, and the diameter of the rope is c. Considering the clearance D between the existing portion 62 and the rope groove portion 51, the fixed point A is within the range (a + b) to (a + b + 75/100 · c) from the center of the rotary shaft 12 in the side plate 13 of the hoisting machine body 10. Be placed. Therefore, it is preferable that the center of the screw hole which is the attachment portion 14 for preventing the rope from coming off is provided at the position of the fixing point A.

With reference to FIGS. 4 and 5, the handle mounting portion 54 is provided on the other end surface 53 of the sheave 50. Specifically, the other end surface 53 of the sheave 50 is provided with a screw hole to which a fastening means 70 such as a bolt is fastened as a handle attaching portion 54. By this fastening means 70, the mounting portion 61 of the mounting member 60 is attached to the other end surface 53 of the sheave 50. Further, the mounting member 60 is attached to the handle attaching portion 54 so that the extending portion 62 is disposed in the protruding direction of the rotating shaft 12 as shown in FIG. In this state, the operator can rotate the sheave 50 while holding the extension 62 of the mounting member 60.

Further, since the sheave 50 cannot be rotated when the extending portion 62 is arranged on the rotation center (center of the cylinder) line of the sheave 50, the extending portion 62 is arranged outside the rotation center of the sheave 50. Preferably it is done. For example, when the distance from the fixed point A of the mounting member 60 to the extending portion 62 is a as described above, and the radius of both end faces of the sheave 50 is b as shown in FIG. 3 (where a < b) When the fixed point A is arranged at a position away from the rotation center of the sheave 50 by a distance a or more, the extending part 62 is not arranged on the rotation center line of the sheave 50. Therefore, it is preferable that the center of the screw hole which is the handle attaching portion 54 is provided at a position separated from the rotation center of the sheave 50 (the center of the cylinder) by a distance a or more on the other end surface of the sheave 50.

Further, the mounting member 60 is attached to the handle attachment portion 54 in a state in which the extending portion 62 is directed outward in the radial direction of the sheave 50. Further, as shown in FIG. 5, the handle attachment portion 54 is provided at the circumferential edge of the other end surface 53 of the sheave 50, and the mounting member 60 is in a state in which the extending portion 62 faces outward in the radial direction of the sheave 50. When attached to the handle attachment portion 54, the turning radius of the sheave 50 is maximized, and the sheave 50 can be rotated with a smaller force. That is, as a result, the radius of the sheave 50 can be used as a rotation radius for rotating the sheave 50, and the sheave 50 can be used as compared with the case where a conventional hand-wound handle is attached to the rotating shaft of the motor. The turning radius increases by the radius.

As shown in FIGS. 5 and 6, the other end surface 53 of the sheave 50 is provided with a groove 54 a into which the mounting portion 61 of the mounting member 60 is partially fitted. By fitting the mounting portion 61 into the groove 54 a, the mounting member 60 can be firmly fixed to the other end surface 53 of the sheave 50 without rotating with respect to the sheave 50. In FIG. 6, the groove 54a and the handle mounting portion 54 are provided at the same position. However, if the mounting member 60 is attached to the handle mounting portion 54 and can be fitted into the groove 54a, the same is necessary. It does not have to be a position.

Further, as shown in FIG. 5, the groove 54a is formed so as to be directed in the radial direction of the sheave. Accordingly, when the sheave 50 is rotated by gripping the extending portion 62 of the mounting member 60 fitted in the groove 54a by hand, the rotating force is applied in the direction tangential to the circumference of the sheave 50. As a result, all of the applied force can be used to rotate.

Further, as shown in FIG. 5, the other end surface 53 of the sheave 50 is provided with a plurality of handle attachment portions 54 at equal intervals along the circumference of the circle. As a result, the worker rotates the sheave 50 by attaching the mounting member 60 to the handle attaching portion 54 at the position where the sheave 50 is most easily rotated among the plurality of handle attaching portions 54. be able to.

As described above, according to the present embodiment, during normal operation, the mounting member 60 is attached to the rope detachment attaching portion 14 provided with the hoisting machine body 10 and the extending portion 62 is the rope of the sheave 50. It arrange | positions with the groove part 51 and a clearance gap, and prevents that the rope 55 falls off from the sheave 50. FIG.

In addition, in the event of an emergency where the elevator car 20 stops between the floors due to a power failure, etc., and passengers are trapped in the car, it is not necessary to consider dropping off of the rope due to the tension loss of the rope 55. The mounting member 60 is removed from the hoisting machine main body 10 and attached to the handle attachment portion 54 provided on the sheave 50. Further, the operator can hold the extended portion 62 of the mounting member 60 and rotate the sheave 50 to move the elevator car 20 to the nearest floor and rescue the passengers trapped in the elevator car 20. .

As described above, the mounting member 60 has a function of preventing the rope from falling off during normal operation, and can satisfy the function of the rescue operation device in an emergency. Thereby, it is not necessary to provide a separate equipment for rotating the sheave in an emergency, and the cost can be reduced.

The hoisting machine for an elevator according to the present invention is applied to an elevator that prevents a rope from falling off from a sheave during normal operation and manually rotates the sheave in an emergency without preparing a separate hand-wound handle. can do.

10 Hoisting machine body, 12 Rotating shaft, 13 Side plate, 14 Rope detachment mounting part, 20 Elevator car, 30 Balance weight, 40 Solase wheel, 50 Sheave, 51 Rope groove, 52 One end face of sheave, 53 The other end of the sheave, 54 mounting part for the handle, 55 rope, 60 mounting member, 61 mounting part, 62 extension part, 63 hole

Claims (10)

A hoisting machine main body with a motor built-in, having a side plate from which the rotating shaft of the motor projects outward, and provided with an attachment portion for preventing the rope from coming off on the outer surface of the side plate;
It is cylindrical and is fixed to the rotating shaft, and is provided with a rope groove portion on which the rope is wound around the cylindrical surface. One end surface is opposed to the outer surface of the hoisting machine body and the other end surface is a handle mounting portion. A sheave with
When the attachment part that can be attached to the attachment part for the rope detachment prevention and the attachment part for the handle, and the attachment part is attached to the attachment part for the rope detachment prevention that extends from the attachment part Mounting with the rope groove and a gap, and when mounted on the handle mounting portion, has an extending portion that is disposed in the direction of the rotation axis and outside the center of rotation of the sheave. An elevator hoisting machine comprising a member. 2. The elevator hoisting machine according to claim 1, wherein a plurality of the handle attachment parts are provided along a peripheral edge of the other end surface of the sheave provided with the handle attachment part. . The elevator hoisting machine according to claim 1 or 2, wherein the mounting member is attached to the handle attachment portion in a state in which the extending portion is directed outward in the radial direction of the sheave. . The elevator hoist according to any one of claims 1 to 3, wherein a groove into which a mounting portion of the mounting member is fitted is provided on the other end surface of the sheave. The elevator hoisting machine according to claim 4, wherein the groove is provided so as to extend in a radial direction of the sheave. In an elevator hoisting machine including a motor built-in hoisting machine main body having a side plate from which a rotating shaft of the motor projects outward, and a sheave fixed to the rotating shaft,
A substantially L-shape comprising a mounting portion that can be attached to the side plate and sheave of the hoisting machine, and an extending portion that extends substantially vertically at a position a distance a from a fixed point A that is a point where the mounting portion is attached. Having a mounting member,
The sheave has a cylindrical shape with a radius b, a rope groove portion around which a rope with a diameter c is wound is provided on the cylindrical surface, one end surface is opposed to the side plate of the hoisting machine main body, and the other end surface is Is provided with a mounting portion for the handle to which the mounting member can be mounted so that the fixing point A of the mounting member is disposed at a position a distance a or more away from the center of the cylinder,
The hoisting machine main body has an outer surface of the side plate facing one end surface of the sheave, and an extending portion of the mounting member is disposed on the outer surface of the rotating shaft in a radial direction of the rotating shaft. An attachment portion for preventing the rope from coming off is provided toward the center so that the attachment portion of the attachment member can be attached, and the attachment portion for preventing the rope from coming off from the center of the rotation shaft along the radial direction of the rotation shaft. An elevator hoisting machine, wherein a mounting portion of the mounting member is attached so that a fixing point A of the mounting member is disposed within a range of a distance (a + b) to (a + b + 75/100 · c). A hoisting machine main body having a side plate in which a motor is built and a rotating shaft of the motor projects outward;
It is cylindrical and has a rope groove part that is fixed to the rotating shaft and is wound around the cylindrical surface. One end surface is opposed to the side plate of the hoisting machine body, and the other end surface is a plurality along the circumferential edge. An elevator hoisting machine comprising a sheave provided with attachment portions for individual handles. A mounting portion that can be mounted on the mounting portion for the handle, and extends from the mounting portion and is mounted on the mounting portion for the handle in the direction of the rotation axis and outside the rotation center of the sheave. The elevator hoisting machine according to claim 7, further comprising a mounting member having an extending portion to be arranged. 9. The elevator hoisting machine according to claim 8, wherein a groove into which the mounting portion of the mounting member is fitted is provided on the other end surface of the sheave provided with the handle mounting portion. In the side plate of the hoisting machine, a surface facing the one end surface of the sheave is provided with an attachment portion for preventing the rope from being attached to which the attachment portion of the attachment member is attached, and the attachment portion of the attachment member is detached from the rope. The elevator hoisting machine according to claim 8 or 9, wherein the extension part is disposed with a gap with the rope groove when attached to the attachment part for stopping.

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