JP2013112502A - Elevator thin hoisting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator thin hoisting machine that safely and easily performs a degreasing operation to a brake drum.SOLUTION: A housing 7 includes a window section 14 for exposing an outer peripheral braking surface of the brake drum 10 and a degreasing member attaching section 13 on which a degreasing member inserted into the window section 14 can be retained during the degreasing operation. The degreasing member attaching section 13 is positioned so as to correspond to the outer peripheral braking surface of the brake drum 10 in the diameter direction of the main axis 9 and is formed on a shoulder section of the housing 7 which resides between a horizontal point being almost at the same level as the main axis 9 and an electromagnetic brake device 11 in a circumferential direction of the main axis 9. In addition, a degreasing material of the degreasing member inserted into the window section 14 so as to be retained and fixed in the degreasing member attaching section 13 is brought into pressure contact with the outer peripheral braking surface of the brake drum 10 to perform the degreasing operation.

Description

  The present invention relates to an elevator thin hoist arranged in an elevator hoistway.

  In elevators in which the elevator is relatively slow, a so-called machine room-less elevator without a machine room has become widespread. In the case of this machine room-less elevator, all the equipment installed in the machine room on the uppermost floor of the machine room in the prior art is installed in the hoistway, so that the clearance between the car and the hoistway wall is relatively limited. It is necessary to install a hoisting machine. Therefore, conventionally, as a technique for reducing the size of the hoisting machine, a sheave, a motor rotor, and a brake disc for a disc brake are integrally molded (for example, see Patent Document 1), a motor rotor The inner peripheral surface or the outer peripheral surface of the brake drum is used as a braking surface of a brake drum (for example, see Patent Documents 2 and 3).

  In the latter type of elevator hoisting machine, the brake drum integrated with the sheave is rotated by energizing the outer rotor type motor during operation, and the electromagnetic brake device brake pad is attached to the outer periphery of the brake drum when stopped. Although the brake is pressed against the braking surface for braking, the brake cannot exhibit a predetermined braking performance when oil is attached to the outer peripheral braking surface of the brake drum. For this reason, a structure is known that prevents oil traveling inside the hoist from adhering to the braking surface (see, for example, Patent Document 4). However, it is necessary to degrease the outer peripheral braking surface of the brake drum against rust-preventing oil during the production period and oil that has scattered and adhered during operation.

JP 2005-247514 A International Publication Number WO2004 / 108579 JP 2009-155070 A JP 2008-222372 A

  However, degreasing the rust preventive oil during the production period in the state of a single drum as in the conventional hoisting machine including the background art described above, it takes time to assemble and the brake surface of the brake drum is rusted. Will occur. In order to prevent this, if an attempt is made to perform a degreasing operation in a process immediately before shipment, the outer peripheral braking surface of the brake drum surrounded by the housing is degreased, resulting in a very difficult narrowing operation. In addition, in addition to the above-mentioned state, various devices are installed in the hoistway as an elevator device in order to degrease the scattered oil during operation on site. After the car is moved to a position that does not overlap in the vertical direction, the work is performed in a narrow space surrounded by the hoistway wall and the weights and guide rails.

  The present invention has been made from the above-described prior art, and an object of the present invention is to provide an elevator thin hoisting machine capable of degreasing a brake drum safely and easily.

  In order to achieve the above object, the present invention provides a housing, a main shaft supported and fixed to the housing, a sheave rotatably attached to the main shaft, a sheave that is formed integrally with the sheave and brakes. A brake drum having a surface, an electromagnetic brake device supported by the housing so as to be braked by contacting a brake pad with the braking surface, a motor rotor fixed to the brake drum side, and the motor In an elevator thin hoist provided with a motor stator that is disposed opposite to a rotor and fixed to the housing side, the elevator has a window portion that exposes the braking surface, and the window portion during degreasing work A degreasing member mounting portion capable of holding the degreasing member inserted into the is provided.

  In the present invention configured as described above, the degreasing work is performed by attaching a degreasing member to a degreasing member mounting portion provided in the housing, and in this state, the elevator thin hoisting machine is idly operated, and the degreasing member is placed on the braking surface of the brake drum. This is done by pressure welding. Thus, after assembling a thin hoisting machine for an elevator, degreasing work can be performed using a degreasing member mounting portion, so that the brake drum after assembly is performed as in the case of performing a single degreasing work before assembly. Rust generation can be prevented. Moreover, it can be performed safely and easily without a dangerous narrowing operation performed on the brake drum rotating in the housing.

  Further, in the present invention, the degreasing member mounting portion is positioned corresponding to the braking surface in the radial direction of the main shaft, and is positioned between the electromagnetic brake device and the substantially right side of the main shaft in the circumferential direction of the main shaft. It is characterized by being placed on the shoulder.

In the present invention configured as described above, a new function for degreasing work can be added without interfering with the electromagnetic brake device and without increasing the width direction of the elevator thin hoisting machine. The present invention is characterized in that the contact surface between the degreasing member mounting portion and the degreasing member is provided with a gradient along the braking surface.

  In the present invention configured as described above, the contact surface between the degreasing member mounting portion and the degreasing member is provided with a gradient so as to follow the braking surface, so that when the brake drum is rotated, the pressing force necessary for degreasing is degreased. It can be generated in the member.

  According to the present invention, since the degreasing work can be performed using the degreasing member attaching portion after the thin hoisting machine for the elevator is assembled, after the assembly as in the case of performing the single degreasing work before the assembly. It is possible to prevent the brake drum from being rusted. Moreover, since the degreasing member is disposed using the degreasing member mounting portion formed integrally with the housing in advance and the braking surface of the brake drum can be degreased by the degreasing member while running idly, the brake drum rotating in the housing can be removed. It can be done safely and easily without the dangerous narrowing work.

It is a top view which shows the elevator apparatus which uses the thin hoisting machine for elevators of this invention. It is a front view which shows one Example of the thin hoisting machine for elevators of this invention. It is a side view of the thin hoisting machine for elevators shown in FIG. It is a perspective view of the degreasing member used by inserting in the degreasing member attaching part of the thin hoisting machine for elevators shown in FIG. It is the elements on larger scale which show the state which attached the degreasing member in the degreasing member attachment part of the thin hoisting machine for elevators shown in FIG.

  Hereinafter, an embodiment of a thin hoisting machine for an elevator according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the elevator apparatus includes a car 3 that can be raised and lowered along a pair of guide rails 2 in a hoistway 1, and a pair of guide rails 4 that are connected to the car 3 by a main rope (not shown). A counterweight 5 that can be moved up and down along with the elevator, and an elevator thin hoist 6 installed in a gap between the hoistway 1 and the car 3. The elevator hoisting machine 6 will be described in detail later, but a fixed-side casing 7 is located on the car 3 side, and a rotatable sheave 8 with respect to the casing 7 is moved up and down on the opposite side. It is located on the road wall side.

  A plurality of main ropes connected between the car 3 and the counterweight 5 are wound so as to respectively match a plurality of grooves formed in the sheave 8 of the elevator thin hoist 6 and will be described in detail later. When the sheave 8 is rotated by the motor configuration to drive the main rope, the car 3 and the counterweight 5 are configured to move up and down in the opposite directions along the guide rails 2 and 4.

  As shown in FIGS. 2 and 3, the elevator hoisting machine 6 has a sheave 8 on a main shaft 9 that is rotatably supported at the center portion of the housing 7, and an outer periphery that is closer to the outer periphery than the sheave 8. A brake drum 10 having a braking surface is integrally coupled, and a casing 7 that is a strength member is disposed on the side of the car 3 of the brake drum 10. An outer rotor type motor is configured at the facing portion between the brake drum 10 and the housing 7, and a motor rotor (not shown) is attached to the brake drum 10 side, and is shown on the housing 7 side at a position facing the brake drum 10. The motor stator is not attached. The outer rotor type motor integrally rotates and drives the movable part on the motor rotor side represented by the sheave 8 and the brake drum 10 by energization. The brake pads 12 of the electromagnetic brake devices 11 having the same configuration are arranged to be pressed against the outer peripheral braking surface of the brake drum 10 for braking.

  The housing 7 at a position corresponding to the outer peripheral sliding surface of the brake drum 10 is provided with a degreasing member mounting portion 13 which will be described in detail later. The outer peripheral braking surface of the brake drum 10 is provided on the degreasing member mounting portion 13. A visible window portion 14 is formed. When the housing 7 has a substantially box shape, the above-mentioned pair of electromagnetic brake devices 11 are disposed on the upper and lower portions thereof, so that the degreasing is performed at a shoulder position of about 45 degrees obliquely that does not interfere with the electromagnetic brake device 11. Although the member attaching part 13 is provided, you may form in not only this position but another position. However, if the degreasing member mounting portion 13 is formed directly beside the main shaft 9, the dimension in the width direction of the elevator thin hoisting machine 6 is increased. Therefore, in the circumferential direction of the main shaft 9, It is desirable to form the degreasing member attachment portion 13 on the shoulder located between the brake devices 11.

  Maintenance of the elevator thin hoisting machine 6 is performed by a maintenance worker from the side where the car 3 is located by raising the car 3 to a position that does not overlap with the elevator thin hoisting machine 6 in the height direction. . At this time, since the guide rails 2, 4, the counterweight 5, and the like are present around the elevator hoisting machine 6 in the hoistway 1, the operation is narrow. However, it is desirable to be able to work from the car 3 side without disassembling the elevator hoisting machine 6. For example, it is desirable that a notch window portion or the like is formed on the car 7 side of the chassis 7 so that the braking contact surface of the brake pad 12 can be visually observed through the notch window portion. Further, it is desirable that the degreasing work of the outer peripheral sliding surface of the brake drum 10 described later can be performed from the car 3 side.

  Next, the degreasing member mounting portion 13 formed on the elevator thin hoist 6 will be described. As shown in FIG. 2, the housing 7 is positioned corresponding to the outer peripheral braking surface of the brake drum 10 in the radial direction of the main shaft 9, and is located in the circumferential direction of the main shaft 9, with the side and electromagnetic being substantially at the same level as the main shaft 9. A degreasing member mounting portion 13 is integrally provided on a shoulder portion located between the brake devices 11, more specifically, a shoulder portion formed at an angle of approximately 45 degrees, and the outer periphery braking of the brake drum 10 is provided on the degreasing member mounting portion 13. The surface is exposed and a visible window portion 14 is formed. For this reason, a new function can be added without interfering with the electromagnetic brake device 11 and without increasing the width direction of the elevator thin hoisting machine 6.

  As shown in FIG. 4, the degreasing member 15 to be used by being attached to the degreasing member mounting portion 13 has an outer shape that can be fitted and held in the window portion 14 of the degreasing member mounting portion 13. 16 and a degreasing material 17 that is degreased by being pressed against the outer peripheral braking surface of the brake drum 10 in a state of being attached to the holding portion 16 and fitted and held in the window portion 14. The contact surface of the degreasing member mounting portion 13 and the degreasing material 17 is provided with a gradient along the outer peripheral braking surface of the brake drum 10, and when the brake drum 10 is rotated, the pressing force necessary for degreasing is degreased. The structure generated in FIG. The gradient is obtained from the friction coefficient between the degreasing material 17 and the brake drum 10 so that the rotation suppression force due to the pressing force of the degreasing material 17 does not exceed the rotational force of the motor.

  In the present embodiment, the elevator hoisting machine 6 configured as shown in FIG. 2 is used, and after assembling the elevator apparatus as shown in FIG. Perform degreasing work. First, the degreasing member 15 shown in FIG. 4 is attached to the degreasing member attaching portion 13 of the housing 7 shown in FIG. 2 from the car 3 side. Since the outer peripheral surface of the holding portion 16 is formed in advance so as to match the inner wall surface of the degreasing member mounting portion 13 formed by the window portion 14, when the degreasing member 15 is inserted into the window portion 14, as shown in FIG. The holding portion 16 fits and is held in close contact with the inner wall surface of the degreasing member mounting portion 13. At this time, the degreasing material 17 of the degreasing member 15 is pressed against the outer peripheral braking surface of the brake drum 10.

  After attaching the degreasing member 15 as described above, the outer rotor type motor of the elevator hoisting machine 6 is energized to rotate the sheave 8 and the brake drum 10. Then, since the brake drum 10 and the like rotate in a state where the degreasing material 17 of the degreasing member 15 is pressed against the outer peripheral braking surface of the brake drum 10, the outer peripheral braking surface of the brake drum 10 is degreased. Since the holding portion 16 is fitted and held in close contact with the inner wall surface of the degreasing member mounting portion 13, the degreasing member 15 does not fall off from the degreasing member mounting portion 13, but this fitting state is more sure. In order to hold it, auxiliary means may be added and held. When the degreasing work is completed, the degreasing member 15 is removed from the car 3 side in the reverse order of attachment.

  When the brake drum 10 before assembly is preliminarily degreased and then assembled as in the prior art, rust may be generated on the brake drum 10 during the leaving period required until assembly. According to such a degreasing work, since degreasing can be performed while rotating the thin hoisting machine 6 for elevators during assembly into the hoistway 1, no rust is generated on the brake drum 10.

  Further, according to such a degreasing operation, the degreasing member 15 can be attached to and removed from the degreasing member mounting portion 13 formed on the housing 7 easily and safely from the car 3 side, not from the hoistway wall side.

  Further, even when the elevator apparatus is configured by using the elevator thin hoisting machine 6 described above, the degreasing work can be performed after the elevator thin hoisting machine 6 is assembled. Rust generation of the brake drum 10 after assembly can be prevented as in the case where work is performed. Moreover, since the degreasing member 15 is disposed using the degreasing member mounting portion 13 provided integrally with the housing 7 in advance and the outer peripheral braking surface of the brake drum 10 can be degreased by the degreasing member 15 while being idle, the inside of the housing 7 This can be performed without the dangerous narrowing work performed on the brake drum 10 that rotates.

  In the above-described embodiment, the elevator thin hoisting machine 6 having the configuration shown in FIGS. 2 and 3 has been exemplified. However, the present invention is not limited to this type, and other elevator thin hoisting machines 6 should be used. You can also. Moreover, although the case where the one degreasing member attachment part 13 was formed in the housing 7 was illustrated, you may provide the some degreasing member attachment part 13. FIG.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Guide rail 3 Car 4 Guide rail 5 Balance weight 6 Elevator thin hoist 7 Housing 8 Sheave 9 Main shaft 10 Brake drum 11 Electromagnetic brake device 12 Brake pad 13 Degreasing member attaching part 14 Window part 15 Degreasing Member 16 Holding part 17 Degreasing material

Claims (3)

A housing, a main shaft supported and fixed to the housing, a sheave rotatably attached to the main shaft, a brake drum formed integrally with the sheave and having a braking surface, and the braking surface An electromagnetic brake device supported by the housing so as to be braked by contacting a brake pad, a motor rotor fixed to the brake drum, and a motor rotor that is disposed opposite the motor rotor and fixed to the housing In an elevator thin hoist equipped with a motor stator,
A thin hoisting machine for an elevator having a window part that exposes the braking surface, and a degreasing member attaching part that can hold a degreasing member inserted into the window part during degreasing work.   The degreasing member mounting portion is located corresponding to the braking surface in the radial direction of the main shaft, and is disposed on a shoulder portion located between the side of the main shaft and between the electromagnetic brake device in the circumferential direction of the main shaft. The thin hoisting machine for elevators according to claim 1 characterized by these.   The thin hoisting machine for an elevator according to claim 1, wherein the contact surface between the degreasing member mounting portion and the degreasing member is provided with a gradient along the braking surface.

Images