JP5809567B2 - Elevator device and elevator machine hoisting machine - Google Patents

Description

  The present invention relates to an elevator apparatus and a hoisting machine for an elevator apparatus.

  In recent years, safety standards for drive units and controllers have been strengthened in elevators due to revisions to the Building Standards Law. For this reason, it is essential to employ an oil adhesion preventing structure for preventing the lubricating oil or the like from adhering to a location that may affect the braking force.

  For example, Patent Document 1 includes a sheave cover that covers an annular protrusion formed integrally with a housing of a drive device, a housing rear surface, and a space where a sheave formed by the annular protrusion is disposed. .

JP 2007-246187 A

  In the prior art, the space portion in which the sheave is disposed is covered with a sheave cover, thereby suppressing the scattering of rope oil to the outside of the sheave. However, in the configuration of Patent Document 1, there is a possibility that the rope oil scattered inside the sheave cover flows out through the housing and adheres to the braking surface of the brake disk.

  Then, this invention is made | formed in view of the said subject, and it aims at providing the elevator apparatus and hoisting machine of an elevator apparatus which can suppress that the oil of the sheave side adheres to a brake disc. .

In order to solve the above-described problems, an elevator apparatus according to the present invention is an elevator apparatus that moves a car up and down by a hoisting machine, and the hoisting machine has a drive in which end portions protrude from the center to both sides in the axial direction. A sheave having a shaft , on which a rope for suspending the car is wound, and a sheave disposed on the other end side of the drive shaft, the output shaft of which is connected to the drive shaft, and the sheave via the drive shaft A drive motor that rotates, a brake disk that is provided at one end of the drive shaft and rotates integrally with the sheave via the drive shaft, a brake that brakes rotation of the brake disc, and at least above the sheave a sieve cover provided so as to cover, adjacent to the sieve cover is provided to cover at least the upper of the brake disc, first formed in the axial direction between the end surface and the disc cover of the brake disc Clearance is, to be greater than the second gap formed in the axial direction between the end surface and the disc cover of the brake disc, the disc cover that is arranged, is formed in cross section into an L-shape And an oil receiving portion that is provided on the inner surface of the lower end of the disc cover in the axial direction and accommodates oil transmitted through the inner surface of the disc cover .

It is explanatory drawing which shows schematic structure of an elevator apparatus. It is a schematic side view of a hoisting machine. It is sectional drawing of a disk cover. It is a schematic front view of a disk cover. It is a side view which expands and shows the lower end of a disk cover. It is sectional drawing of the disc cover which concerns on a modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As will be described in detail later, the elevator apparatus of the present embodiment covers the brake disc with the disc cover and reduces the inner surface of the lower end of the disc cover in order to reduce the possibility that the lubricating oil of the rope adheres to the braking surface of the brake disc. An L-shaped oil receiving part is disposed on the side. As a result, even if the rope oil enters the inside of the disc cover and adheres to the inner surface of the disc cover, the rope oil that moves downward along the inner surface of the disc cover can be accommodated in the oil receiving portion. Therefore, it is possible to prevent the rope oil from dripping and adhering toward the brake disc from the disc cover, and to further improve the reliability of the elevator apparatus.

  Hereinafter, although the winding machine and elevator apparatus which concern on embodiment of this invention are demonstrated based on FIGS. 1-5, this invention is not limited to the following examples.

  FIG. 1 is a schematic configuration diagram illustrating a configuration of an elevator apparatus 1 according to the present embodiment. The elevator apparatus 1 according to the present embodiment includes, for example, a car 120 that moves up and down in a hoistway 110 formed in a building structure, and a counterweight 140 that is connected to the car 120 via a rope 130. .

  The elevator apparatus 1 is disposed at the top of the hoistway 110 and is disposed in the vicinity of the hoisting machine 100 for hoisting and lowering the car 120 by winding the rope 130, and the hoisting machine 100. And a warping vehicle 150 on which 130 is mounted.

  FIG. 2 shows a schematic side view of the hoisting machine 100. The hoisting machine 100 according to the present embodiment includes, for example, a sheave 40 having the drive shaft 11, a motor-side bearing base 20 that rotatably supports the drive shaft 11 and the sheave 40, and a brake-side bearing base 21. .

  Further, the hoisting machine 100 includes a drive motor 10, a brake disc 50, and a brake 72. The drive motor 10 is driven in accordance with a control signal from an elevator control device (not shown). The drive motor 10 is disposed on the other end side in the axial direction of the drive shaft 11 (left side in FIG. 2), and rotates the sheave 40 via the drive shaft 11.

  The brake disc 50 is provided at an end (on the right side in FIG. 2) opposite to the direction in which the drive motor 10 is arranged, of both ends in the axial direction of the sheave 40, and is integrated with the sheave 40. Rotate. The brake 72 operates according to a control signal from the elevator control device, and clamps the brake disc 50 to brake the rotation of the brake disc 50.

  Further, the hoisting machine 100 includes a sheave cover 60 that covers the upper surface side of the sheave 40 and a disk cover 61 that covers the upper surface side of the brake disk 50. The disc cover 61 is formed in a semicircular arc shape that is about 10 to 30 mm larger than the diameter of the brake disc 50.

  The disc cover 61 and the brake disc 50 are arranged such that a gap between the disc cover 61 and the brake disc 50 is wider on the brake side than on the motor side in the axial direction of the drive shaft 11.

  As shown in the enlarged view of FIG. 3, in the present embodiment, a first gap 73 formed in the axial direction between one end surface of the brake disc 50 (the right side in FIG. 2) and the inner surface of the disc cover 61 is provided. The disc cover 61 is attached so as to be larger than the second gap 70 formed in the axial direction between the other end surface of the brake disc 50 (left side in FIG. 2) and the inner surface of the disc cover 61. Hereinafter, the first gap 73 is referred to as a brake-side gap 73, and the second gap 70 is referred to as a motor-side gap 70. When the dimension of the brake side gap 73 is L1, and the dimension of the motor side gap 70 is L2, the disc cover 61 is attached so that L1> L2.

  Furthermore, the brackets 64a and 64b for attaching the disc cover 61 to the brake-side bearing base 21 are spaced apart in the left-right direction when the disc cover 61 is viewed from the front, as shown in the front view of the disc cover in FIG. Is provided. Unless otherwise distinguished, the brackets 64a and 64b are referred to as a bracket 64.

  Each bracket 64 is joined to one end surface of the disc cover 61 using a fixing means such as welding. In order to ensure the rigidity of the disc cover 61, each bracket 64 is formed to have a height that is at least half of the total height of the disc cover 61 in the vertical direction when the disc cover 61 is viewed from the front.

  In the present embodiment, the height of each bracket 64 is set to more than half of the total height of the disc cover 61 to ensure the rigidity of the disc cover 61. As a result, even when the brake-side gap 73 between the brake disc 50 and the disc cover 61 is increased and the motor-side gap 70 is reduced, the deflection due to the weight of the disc cover 61 due to its own weight or vibration can be reduced. Therefore, in this embodiment, a structure in which the disc cover 61 and the brake disc 50 do not easily interfere with each other is realized.

  As shown in FIGS. 3 to 5, an oil guiding barb 63 having an L-shaped cross section is provided along the axial direction on the inner surface side of the lower end side 65 of the disc cover 61. The oil guiding barbs 63 are provided on the lower end sides of the left and right ends of the disc cover 61, respectively. The oil guide return 63, which is an example of the “oil receiving portion”, is for receiving the rope oil transmitted through the inner surface of the disc cover 61 and guiding the rope oil to the motor-side gap 73. The length dimension of the oil guiding barb 63 is set slightly shorter than the thickness dimension (axial dimension) of the disc cover 61. Accordingly, a gap ΔL is formed between the one end side opening 63 a of the oil guiding barb 63 and the inner surface side of the disc cover 61.

  The rope 130 wound around the sheave 40 is, for example, firmly formed from a plurality of iron cores, and can cope with relatively high buildings. On the other hand, in order to suppress wear of the rope 130 and the like, it is necessary to supply lubricating oil (rope oil) to the rope 130. Therefore, in the sheave 40 around which the rope 130 is wound, a part of the rope oil that the rope 130 has can be scattered around. The rope oil scattered in the sealed space between the sheep cover 60 and the sheave 40 may enter the disk cover 61.

  There are two possible routes for the rope oil to enter and adhere to the disc cover 61 as follows. The first intrusion path is a path through which mist-like rope oil enters the space in the disk cover 61 from the space in the sheave cover 60. Rope oil scatters from the surface of the sheave 40 due to the centrifugal force generated as the elevator apparatus 1 moves up and down, and forms a mist in the sealed space in the sheave cover 60. The mist-like rope oil may move from the sealed space in the sheave cover 60 into the disc cover 61 and adhere to the inside of the disc cover 61.

  The second intrusion path is a path that enters from the surface of the sheave 40 toward the brake disc 50. The rope oil that has oozed out on the surface of the rope 130 travels along the surface of the sheave 40, travels in the surface direction of the brake disc 50, scatters by centrifugal force, and adheres to the inside of the disc cover 61.

  The rope oil splashed to the inside of the disc cover 61 through such a path goes down to the lower end portion 65 of the disc cover 61 along the inside of the disc cover 61. As described above, the oil guide barb 63 having an L-shaped cross section when viewed from the axial direction is attached to the lower end portion 65 of the disc cover 61.

  Therefore, as indicated by the dotted line arrow in FIG. 5, the rope oil that has traveled inside the disc cover 61 is temporarily blocked by the oil guiding barb 63. Depending on the amount and viscosity of the rope oil accommodated in the oil guiding barb 63, a part of the rope oil is guided to the brake side gap 73 and dripped from the opening 63a on one end side of the oil guiding barb 63. To do.

  At this time, since a wide brake-side gap 73 is secured between the brake disc 50 and the disc cover 61, the possibility that the rope oil adheres to the brake disc 50 when the rope oil is dripped can be kept low. In other words, since the opening 63a of the oil guide bar 63 is provided as far as possible from the braking surface of the brake disc 50, the risk of the discharged rope oil adhering to the brake disc 50 can be reduced.

  Thus, in this embodiment, in order to discharge the rope oil collected by the oil guiding barb 63 without adhering to the braking surface of the brake disc 50, one end side of the oil guiding barb 63 that is a discharge port. The size of the brake side gap 73 where the opening is located is set large.

  In the present embodiment, the height of one bracket 64 for fixing the disc cover 61 to the brake-side bearing base 21 is set to more than half of the total height of the disc cover 61 to ensure the rigidity of the disc cover 61. ing. Therefore, even when the brake-side gap 73 is set to be larger than the motor-side gap 70, the disc cover 61 can be prevented from being bent.

  In addition, this invention is not limited to embodiment mentioned above. A person skilled in the art can make various additions and changes within the scope of the present invention.

  For example, as shown in the modified example of FIG. 6, the dimension of the motor-side gap 70 is set longer than the dimension of the brake-side gap 73, contrary to the configuration described in FIGS. It is good also as a structure which positions the opening part 63a in the motor side clearance gap 70. FIG.

  Further, for example, the oil guiding barb 63 may be inclined toward the direction away from the side closer to the brake disc 50 in FIG. Thereby, rope oil can be easily discharged | emitted from the return 63 for oil induction | guidance | derivation.

  Further, the oil guide barb 63 may be manufactured in an L shape by welding a metal plate or the like, or configured as a resin rail having a guide groove formed thereon, A structure may be attached to the inside with an adhesive or the like.

  1: elevator device, 10: drive motor, 11: drive shaft, 40: sheave, 50: brake disc, 60: sheave cover, 61: disc cover

Claims (3)

An elevator device that moves a car up and down by a hoisting machine,
The hoisting machine,
A sheave having a drive shaft with end portions projecting from both sides in the axial direction from the central portion, and a rope wound around the car,
A drive motor disposed on the other end side of the drive shaft, an output shaft of which is connected to the drive shaft, and rotates the sheave via the drive shaft;
Provided on one end side of the drive shaft, and the brake disc that rotates integrally with the sheave via the drive shaft,
A brake for braking rotation of the brake disc;
A sheave cover provided to cover at least the upper side of the sheave;
A first gap that is provided adjacent to the sheave cover so as to cover at least the upper side of the brake disc and is formed in an axial direction between one end surface of the brake disc and the disc cover is provided on the brake disc. to be larger than the second gap formed in the axial direction between the end surface and the disk cover, and a disk cover that is arranged,
An oil receiving part for accommodating oil that is formed in an L shape in cross section, is provided in an axial direction on the inner surface of the lower end of the disc cover, and is transmitted through the inner surface of the disc cover;
An elevator apparatus comprising: The drive shaft and the sheave are rotatably supported by a bearing stand,
The mounting bracket for mounting the disk cover to the bearing stand has a height dimension that is at least half of the height dimension of the disk cover.
The elevator apparatus according to claim 1 . A hoisting machine for moving the elevator car up and down,
A sheave having a drive shaft with end portions projecting from both sides in the axial direction from the central portion, and a rope wound around the car,
A drive motor disposed on the other end side of the drive shaft, an output shaft of which is connected to the drive shaft, and rotates the sheave via the drive shaft;
Provided on one end side of the drive shaft, and the brake disc rotating integrally with the sheave via the drive shaft,
A brake for braking rotation of the brake disc;
A sheave cover provided to cover at least the upper side of the sheave;
A first gap that is provided adjacent to the sheave cover so as to cover at least the upper part of the brake disc and is formed in an axial direction between one end surface of the brake disc and the disc cover is the brake disc. and the disc cover so as to be larger than the second gap formed in the axial direction, that is disposed between the other end face and the disc cover,
An oil receiving part for accommodating oil that is formed in an L shape in cross section, is provided in an axial direction on the inner surface of the lower end of the disc cover, and is transmitted through the inner surface of the disc cover;
Comprising
Elevator hoisting machine.

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