JP4342252B2 - elevator - Google Patents

Description

  The present invention relates to an elevator provided with a vibration isolating means for suppressing vibration applied to a deflecting sheave for winding a main rope.

  In general elevators, a machine room is provided on the roof of a building, a hoisting machine is installed in the machine room, and a main rope is wound around the hoisting machine. The main rope is suspended in the hoistway of the building, and a car is connected to one end of the main rope, and a counterweight is connected to the other end. The car and the counterweight are driven by a hoisting machine to move through the hoistway. Go up and down.

  However, in such an elevator where a machine room is installed on the roof of the building, it is disadvantageous in terms of the building landscape and the right of sunshine, and in recent years, therefore, a machine room that does not install a machine room on the roof of the building Less elevators are being adopted.

  In this machine roomless elevator, a plurality of beam members are assembled in the hoistway, a hoisting machine and a deflecting sheave are attached to these beam members, and a main rope for suspending the car and counterweight is hoisted. The car and the counterweight are lifted and lowered in the hoistway by the rotation of the hoisting machine.

  FIG. 11 shows a support structure of a deflecting sheave around which a main rope is wound. Reference numeral 1 is a beam member installed horizontally in the upper part of a hoistway, and a beam 2 is provided on the beam member 1. It has been. The beam 2 has a leg portion 3 at an intermediate portion, the leg portion 3 extends below the beam member 1, and a deflecting sheave 4 is rotatably attached to the extending portion, and a main rope 5 is attached to the deflecting sheave 4. The middle of is wrapped.

  A plurality of anti-vibration rubbers 6 are provided between the beam member 1 and the beam 2 as anti-vibration members that absorb vibration during elevator operation. These anti-vibration rubbers 6 are fixed to the beam member 1 and the beam 2 via bolts 7 and nuts 8. Further, an earthquake-resistant bolt 9 is provided between the beam member 1 and the beam 2 in order to prevent displacement movement and dropout due to a large earthquake.

  In a machine room-less elevator, a beam member is assembled in a narrow space in a hoistway, and various elevator equipment such as a hoisting machine and a deflector sheave are assembled close to each other and adjacent to each other. .

  However, in the conventional sheave support structure described above, the head of the bolt 7 for fixing the vibration isolating rubber 6 and the tip of the seismic bolt 9 are exposed so as to protrude to the outside of the beam member 1 and the beam 2, so that The head and tip may interfere with the elevator equipment adjacent to the head and the tip, and eventually it may be difficult to attach the sheave support beam 2 to the beam member 1.

  The present invention has been made paying attention to such points, and the object of the invention is to provide a beam for supporting a sheave to a beam member in a hoistway even in a narrow space where various elevator equipments are arranged. An object of the present invention is to provide an elevator that can be easily attached to a vehicle.

The invention of claim 1 suspends a hoisting machine provided in a hoistway and a car and a counterweight wound around the hoisting machine in the hoistway, and the hoisting machine drives the hoisting machine. A main rope that raises and lowers the carriage and the counterweight, a beam disposed on a beam member installed above the hoistway, and a beam that is rotatably attached to and supported by the beam. Is disposed between the beam and the beam member, and a part of the beam is fitted into a recess formed on the lower surface of the beam to support the beam on the beam member. An anti-vibration member made of an elastic body, and the beam has a pair of legs extending below the beam member across the beam member, and extends below the beam member of the pair of legs. The baffle sheet between the extension parts There has been characterized in that rotatably mounted.

  The invention according to claim 2 is characterized in that the beam member is provided with a stopper opposed to at least end faces on both ends of the beam.

  The invention of claim 3 is characterized in that an elastic body is provided between the stopper and the beam.

The invention according to claim 4 is characterized in that the deflecting sheave is provided in a state in which an axial direction thereof faces a direction substantially perpendicular to the axial direction of the hoisting machine in a plan view.

The invention according to claim 5 is characterized in that the counterweight is arranged in a space area on the back side of the car, and the hoisting machine is arranged in an upper space part of the counterweight.

  According to the present invention, the beam for supporting the sheave can be easily attached to the beam member in the hoistway even in a narrow space where various elevator articles are arranged.

  Embodiments of the present invention will be described below with reference to FIGS.

  FIG. 1 shows a schematic external structure of a machine roomless elevator, and FIG. 2 shows a plan view thereof. A car 21 and a counterweight 22 are provided in a hoistway 20 of the building.

  The car 21 has an entrance 23 on the front surface, and a counterweight 22 is arranged in a space area on the back side of the car 21. The car 21 and the counterweight 22 move up and down along the guide rails 25 and 26 shown in FIG.

  As shown in FIG. 1, a plurality of beam members 29 are installed in the upper part of the hoistway 20. These beam members 29 are assembled on the guide rails 25 and 26 shown in FIG. A hoisting machine 30 is attached to a part of the beam members 29. The hoisting machine 30 has, for example, a disk shape having a driving sheave 31 on the front surface, and is attached to the beam member 29 so as to be arranged in parallel with the counterweight 22 above the counterweight 22.

  Further, an intermediate sheave 35 and a deflecting sheave 36 are rotatably provided on the other part of the beam member 29. The intermediate sheave 35 is provided so that its central axis is parallel to the central axis of the drive sheave 31 of the hoisting machine 30, and the baffle sheave 36 has a central axis that is in plan view with the central axis of the driving sheave 31 of the hoisting machine 30. Are provided in a direction at right angles.

  A pair of car sheaves 40 a and 40 b are rotatably provided on the lower surface of the car 21. These car sheaves 40 a and 40 b are separately attached to both sides of the car 21 so as to be arranged on a diagonal line on the lower surface of the car 21. A weight sheave 42 is rotatably attached to the upper portion of the counterweight 22.

  Reference numeral 45 denotes a main rope. One end 45a of the main rope 45 is fixed to the beam member 29, and the other end is pulled out to the upper side of the car 21 through the car sheaves 40a and 40b on the lower side of the car 21. The drawer side is wound around the deflecting sheave 36, the intermediate sheave 35, the driving sheave 31 of the hoisting machine 30, and the weight sheave 42, and the end 45 b is fixed to the beam member 29.

  By the main rope 45 thus routed, the car 21 and the counterweight 22 are suspended in the hoistway 20 so as to be substantially balanced with each other. In this state, the hoisting machine 30 is activated and the drive sheave 31 rotates, so that the car 21 and the counterweight 22 are lifted and lowered in opposite directions.

  In the figure, the car 21 and the counterweight 22 are suspended by a single main rope 45, but in actuality, they are suspended by a plurality of main ropes arranged in parallel.

  3 to 5 show a support structure of the deflecting sheave 36, and a beam 47 for supporting the sheave is provided on the beam member 29. FIG. This beam 47 has a pair of leg portions 48 in the middle portion, these leg portions 48 extend across the beam member 29 and extend downward, and a deflecting sheave 36 is rotatably attached between the extension portions. .

  Between the beam member 29 and the beam 47, a pair of anti-vibration rubbers 50 as elastic bodies that absorb vibration during elevator operation are provided separately in the longitudinal direction of the beam member 29. These anti-vibration rubbers 50 have a rectangular parallelepiped shape, and a rectangular recess 51 corresponding to each anti-vibration rubber 50 is formed on the lower surface of the beam 47, and a part of each anti-vibration rubber 50 is fitted into these recesses 51. ing. The beam 47 is placed on the beam member 29 via the anti-vibration rubber 50, and the deflecting sheave 36 is supported below the beam member 29 via the beam 47.

  In such a configuration, the conventional anti-vibration rubber mounting bolt 7 shown in FIG. 11 is unnecessary, the bolt 7 is not overhanged, and therefore it is easy even in a narrow space restricted by surrounding elevator equipment. The beam 47 can be efficiently attached to the beam member 29 and the sheave 36 can be supported. And since the conventional volt | bolt 7 is unnecessary, the attachment operation | work of the anti-vibration rubber | gum 50 is easy, and cost can also be reduced.

  The beam 47 has a pair of leg portions 48, the leg portions 48 extend below the beam member 29, and a deflecting sheave 36 is attached between the extension portions, that is, the beam member 29 is attached to the beam member 29. 47 and the deflecting sheave 36. Therefore, the beam 47 can be prevented from falling off the beam member 29 even if a large vibration exceeding the expectation is applied.

  FIG. 6 shows a second embodiment. In this embodiment, stoppers 53 are provided on both ends of the beam 47. These stoppers 53 have an L shape having a vertical piece 53 a and a horizontal piece 53 b, the horizontal piece 43 b is in contact with the upper surface of the beam member 29 and fixed with a bolt 54, and the vertical piece 43 a is slightly spaced from the end face of the beam 47. It is arranged so as to face each other with a gap.

  In the case of this embodiment, when the beam 47 rolls due to the occurrence of an earthquake, the movement is restricted by the stopper 53. In the conventional structure shown in FIG. 11, the rolling motion of the beam 2 is restricted by the seismic bolt 9, but the seismic bolt 9 protrudes and protrudes above the beam 2. In the case of a narrow space where elevator articles are arranged above 2, it is difficult to attach the seismic bolt 9.

  However, in the case of the present embodiment, the rolling motion is restricted by the stoppers 53 disposed at both ends of the beam 47, and therefore, in the case of a narrow space where the elevator article is disposed above the beam 47. However, the beam 47 can be attached to the beam member 29 without being limited thereto.

  In addition, as shown in FIG. 7, if the horizontal piece 53b in the stopper 53 is attached so as to enter the lower side of the beam 47, the attachment can be performed even when the length of the beam member 29 is short.

  FIG. 8 shows a third embodiment. In this embodiment, rubber 55 as an elastic body is provided in a gap between the vertical piece 53a and each end face of the beam 47 in each stopper 53. .

  In the case of this embodiment, the vibration in the vertical direction during elevator operation is absorbed by the vibration isolating rubber 50, and the vibration in the horizontal direction is effectively absorbed by the rubber 55 on both ends of the beam 47.

  When the beam 47 rolls due to the occurrence of an earthquake, the roll force is absorbed by the rubber 55, and the roll movement of the beam 47 is more accurately regulated. When the beam 47 largely rolls, a large shearing force is applied to the vibration isolating rubber 50 between the beam 47 and the beam member 29. In this embodiment, the vibration of the beam 47 is precisely regulated to prevent vibration. The shearing force applied to the rubber 50 can be kept small.

  FIG. 9 shows a fourth embodiment. In this embodiment, the stoppers 53 provided on both ends of the beam 47 have a crank shape in cross section. That is, each stopper 53 has a vertical piece 53 a and a horizontal piece 53 b connected to the lower end thereof, and a holding piece 53 c is formed horizontally at the upper end of the vertical piece 53 a, and these holding pieces 53 c are arranged at both ends of the beam 47. It arrange | positions so that a fixed space | interval may be opposed to an upper surface.

  In the case of this embodiment, an unnecessarily upward movement of the beam 47 is accurately regulated by the restraining pieces 53 c in each stopper 53.

  FIG. 10 shows a fifth embodiment. In this embodiment, the anti-vibration rubber 50 provided between the beam 47 and the beam member 29 is provided with a smaller number of bolts 56 and nuts 57 than in the prior art. The beam 47 and the beam member 29 are fixed. The lower surface of the beam 47 is flat and is not formed with a recess into which the anti-vibration rubber 50 is fitted.

  Stoppers 53 are provided at both ends of the beam 47, rubber 55 is provided in a gap between the vertical pieces 53a of the stoppers 53 and the beam 47, and the movement of the roll of the beam 47 is restricted by the stopper 53. Yes.

  In the case of this embodiment, it is not necessary to form a recess for fitting the anti-vibration rubber 50 on the lower surface of the beam 47, and the configuration can be reduced accordingly.

  The hoisting machine is not limited to being provided in the upper part in the hoistway, and may be provided in a pit in the lower part of the hoistway, for example.

The perspective view which shows the schematic external appearance structure of the machine room less elevator which concerns on 1st Embodiment of this invention. The top view which shows the planar structure of the elevator. The front view which shows the support structure of the deflecting sheave in the elevator. Sectional drawing which follows the AA line in FIG. Sectional drawing which follows the BB line in FIG. The front view which shows 2nd Embodiment of this invention. The front view which shows the modification of the attachment structure of the stopper in the 2nd Embodiment. The front view which shows 3rd Embodiment of this invention. The front view which shows 4th Embodiment of this invention. The front view which shows 5th Embodiment of this invention. The front view which shows a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 ... Hoistway 21 ... Car 22 ... Counterweight 26, 27 ... Guide rail 29 ... Beam member 30 ... Hoisting machine 35 ... Intermediate sheave 36 ... Warp sheave 40a, 40b ... Car sheave 42 ... Weight sheave 45 ... Main rope 47 ... Beam 48 ... Leg part 50 ... Anti-vibration rubber 51 ... Recessed part 53 ... Stopper 55 ... Rubber

Claims (5)

A hoisting machine provided in the hoistway;
A main rope that is wound around the hoisting machine and suspends a car and a counterweight in a hoistway, and drives the hoisting machine to raise and lower the car and a counterweight;
A beam disposed on a beam member erected on the upper part of the hoistway;
A deflecting sheave that is rotatably attached to and supported by this beam, and the middle of the main rope is wound around,
A vibration isolating member that is disposed between the beam and the beam member, and is made of an elastic body that is partly fitted in a recess formed on a lower surface of the beam and supports the beam on the beam member; ,
Comprising
The beam has a pair of legs extending below the beam member across the beam member, and the deflecting sheave is rotatably attached between the extended portions of the pair of legs extending below the beam member. An elevator characterized by being .   The elevator according to claim 1, wherein the beam member is provided with a stopper facing at least end faces on both ends of the beam.   The elevator according to claim 2, wherein an elastic body is provided between the stopper and the beam.   The elevator according to any one of claims 1 to 3, wherein the deflecting sheave is provided in a state in which an axial direction thereof faces a direction substantially perpendicular to the axial direction of the hoisting machine in a plan view. .   5. The counterweight according to any one of claims 1 to 4, wherein the counterweight is arranged in a space area on the back side of the car, and the hoisting machine is arranged in an upper space of the counterweight. elevator.

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