JP5608960B2 - Machine room-less elevator device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a machine room-less elevator in which a hoisting machine is arranged at the lower part of a hoistway, and more particularly to equipment arrangement at the upper part of the hoistway and effective utilization of the hoistway space.

In a machine room-less elevator in which a hoisting machine is arranged at the lower part of the hoistway and a car-side return car and a counterweight-side return car are arranged at the upper part of the hoistway, the structure of the return wheel support beam that supports the return wheel is simplified and guided. To reduce the compressive load applied to the rail and to reduce the bending moment applied to the guide rail for the car, the return wheel mounting beam for mounting the car side return wheel and the balance weight side return wheel is used as a guide for the balance weight . there are those configured to support the load within the rails and the car guide rail or three or more (for example, see Patent Document 1).

JP 2004-67313 A

  In the above-mentioned patent document 1, the counterweight-side return wheel mounting frame is attached to the return wheel mounting beam via the counterweight-side return wheel mounting frame. It is attached to the lower surface of the mounting beam, and the lower part of the mounting frame is supported on the upper end of the counterweight side rail by the counterweight side rail support. For this reason, the counterweight side return wheel cannot be disposed above the lower surface of the return wheel mounting beam, and accordingly, the upper limit position of the counterweight is naturally limited. As a result, if it is necessary to increase the weight (loading amount) of the counterweight, such as an elevator with a large rated load, the overall width and depth of the counterweight must be increased, and the hoistway accordingly. If this is not possible, or if this is not possible, the height of the counterweight must be increased.To that end, the position of the return wheel mounting beam must be increased, that is, the hoistway dimensions must be increased accordingly. There was a problem that had to be done.

  The present invention has been made in view of the above problems, and has a structure in which the counterweight can be moved further upward than the conventional upper limit position without increasing the position of the return wheel mounting beam. The height of the counterweight can be increased without increasing the height of the counterweight, that is, the weight of the counterweight can be increased.

The machine room-less elevator apparatus according to the present invention includes a car weight that moves up and down in a hoistway, a balance weight that moves up and down in the opposite direction of the car, a car guide rail that restricts horizontal movement of the car, and the balance. A balance weight guide rail for restricting horizontal movement of the weight, a rope for suspending the cage and the balance weight, a sheave arranged at the lower part of the hoistway, and a sheave around which the rope is wound, and driving the sheave In a machine room-less elevator apparatus comprising a hoisting machine having a motor and rotating the sheave to raise and lower the car and the counterweight via the rope, the car guide rail and the counterweight A return wheel support beam supported by a guide rail for use and arranged near the top of the hoistway and a part of the rope from the sheave to the car are wound. Hung, and car-side return pulley which is supported on the return pulley support beam, a portion is wound the rope leading to the counterweight from the sieve, while being placed independently from the return sheave support beam, A counterweight-side return wheel supported by at least one of the cage guide rail and the counterweight guide rail, and the counterweight-side return wheel and the return wheel support beam do not overlap on the projection plane; It is characterized by that.

  According to the present invention, the counterweight-side return wheel and the return wheel support beam are configured so as not to overlap each other on the projection plane, so that the top portion of the counterweight-side return wheel is installed above the lower surface of the return wheel support beam. As a result, it is possible to move the counterweight further upward than the conventional upper limit position without changing the height position of the return wheel support beam, and as a result, without increasing the hoistway dimensions. The height dimension of the counterweight can be increased, that is, the weight of the counterweight can be increased.

Embodiment 1 FIG.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a side view of a hoistway showing an elevator apparatus according to a first embodiment of the present invention, FIG. 2 is a plan view of a hoistway showing the elevator apparatus according to the first embodiment of the present invention, and FIG. 3 shows a main part of FIG. It is a side view of a hoistway upper part, and the same code | symbol shows the same part in each figure.

  In the figure, 1 is an elevator hoistway, 2 is a car, 3 is a counterweight, 4 is a guide rail for a car that regulates horizontal movement of the car, and 5 is a counterweight that regulates horizontal movement of the counterweight. Guide rail, 6 is a sheave of a hoisting machine (not shown) arranged at the lower part of the hoistway, 7 is a suspension car of a car 2, 8 is a car side return car, 9 is a counterweight side return car, 10 is a counterweight 3 is a suspension wheel, 11 is a return wheel support beam, and 12 is a rope that suspends the car 2 and the counterweight 3. The rope 12 is wound around the sheave 6, and one end of the rope 12 is attached to the car-side rope stop 13 via a car-side return wheel 8 provided at the upper part of the hoistway and a suspension wheel 7 of the car 2. Further, the other end of the rope 12 is attached to the counterweight side leash stop 14 via the counterweight side return wheel 9 provided at the upper part of the hoistway and the suspension wheel 10 of the counterweight 3. When the sheave 6 is rotated by driving the upper machine, the car 2 and the counterweight 3 are raised and lowered opposite to each other.

  Near the top of the hoistway 1, a return wheel support beam 11 supported by a car guide rail 4 and a counterweight guide rail 5 is arranged, and a part of a rope 12 extending from the sheave 6 to the car suspension car 7 is wound. A car-side return wheel 8 that is hung is supported by the return wheel support beam 11 via a mounting bracket 15.

  On the other hand, as shown in FIG. 2, the counterweight-side reverse wheel 9 in which a part of the rope 12 extending from the sheave 6 to the counterweight suspension vehicle 10 is wound has a rotation surface thereof in the longitudinal direction of the return wheel support beam 11. It is substantially parallel and is supported by the mounting frame 16 at a position that does not overlap the return wheel support beam 11 on the projection plane. The mounting frame 16 is bolted, welded, etc. to the car guide rail 4 and the counterweight guide rail 5. It is fixed by.

  In the elevator apparatus configured as described above, the counterweight-side return wheel 9 is arranged at a position that does not overlap the return wheel support beam 11 on the projection plane. It is possible to dispose the support beam 11 above the lower surface.

  As a result, the height of the counterweight 3 can be increased by the amount of the top portion of the counterweight-side return wheel 9 disposed above the lower surface of the return wheel support beam 11, and the amount of weight loaded on the counterweight can be increased. be able to.

Other Embodiments In the above embodiment, the mounting frame that supports the counterweight- side return wheel is supported by the car guide rail and the counterweight guide rail, but in addition to this, the return wheel support beam Also, it may be fixed and supported.

  In addition, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

It is a hoistway side view which shows the elevator apparatus by Embodiment 1 of this invention. It is a hoistway top view which shows the elevator apparatus by Embodiment 1 of this invention. It is a side view of the hoistway upper part which shows the principal part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Cage 3 Counterweight 4 Car guide rail 5 Counterweight guide rail 6 Sheave 7 Car suspension car 8 Car side return car 9 Counterweight side return car 10 Counterweight suspension car 11 Return car support beam 16 Mounting frame

Claims (2)

A car weight that moves up and down in the hoistway, a counterweight that moves up and down in the opposite direction of the car, a car guide rail that restricts horizontal movement of the car, and a counterweight that regulates horizontal movement of the counterweight A guide rail for the vehicle, a rope for suspending the cage and the counterweight, a sheave around the hoistway, a sheave around which the rope is wound, and a motor for driving the sheave, and rotating the sheave In a machine room-less elevator device comprising a hoist for raising and lowering the car and the counterweight via the rope, the top of the hoistway is supported by the guide rail for the car and the guide rail for the counterweight A return wheel support beam arranged in the vicinity and a part of the rope from the sheave to the car are wound and supported by the return wheel support beam And your side return pulley, the portion of the rope leading to the counterweight from the sheave is wound, while being placed independently from the return sheave support beam, said car guide rails and the counterweight guide rails And a counterweight-side return wheel supported by at least one of the counterweight-side return wheel, and the counterweight-side return wheel and the return wheel support beam do not overlap on the projection plane. 2. The machine room-less elevator device according to claim 1, wherein a rotation surface of the counterweight-side return wheel and a longitudinal direction of the return wheel support beam are substantially parallel to each other.

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