JP4757803B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus in which a drive device for raising and lowering a car and a counterweight is arranged at the upper part of a hoistway.

  Conventionally, in order to shorten the height dimension of the hoistway, an elevator apparatus in which a hoisting machine is horizontally arranged on the upper part of the hoistway has been proposed. The axis of rotation of the hoist drive sheave is perpendicular to the horizontal plane. A main rope is wound around the driving sheave horizontally. Two turning sheaves that change the direction of the main rope from the horizontal direction to the vertical direction are provided at the upper part of the hoistway. The car and the counterweight are suspended in the hoistway by the main rope turned by the turning sheave (see Patent Document 1).

JP 2000-255933 A

  However, in such a conventional elevator apparatus, the car and the counterweight are moved up and down by one hoisting machine, so that the hoisting machine becomes larger as the capacity of the elevator apparatus increases. . Thereby, the whole elevator apparatus cannot be reduced.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator apparatus that can reduce the size of the entire apparatus.

An elevator apparatus according to the present invention includes a first drive sheave having a first drive sheave, and a first drive sheave and a second drive sheave arranged at an upper part of a hoistway so that a rotation axis of the first drive sheave is perpendicular to a horizontal plane. The second drive sheave is moved up and down by the driving force of the second drive device and the first and second drive devices arranged at the upper part of the hoistway so that the rotation axis of the second drive sheave is perpendicular to the horizontal plane. A cage, a counterweight that is raised and lowered in the hoistway by the driving force of the first and second driving devices, and a first drive sheave including a first end and a second end connected to the upper part of the hoistway. A car having a first main rope hung and a second main rope wound around a second drive sheave including a third end and a fourth end connected to the upper part of the hoistway; The main rope body that suspends the weight in the hoistway, the cage, and the first main rope A portion between the first drive sheave and the first end is wound around the first car suspension wheel and the car, and the portion between the second drive sheave and the third end of the second main rope is wound. A second car suspension wheel hung, a first counterweight suspension car provided on the counterweight and wound around a portion between the first drive sheave and the second end of the first main rope, and fishing A second counterweight suspension wheel provided on the counterweight and wound around a portion between the second drive sheave and the fourth end of the second main rope , the first drive sheave and the second drive sheave being , Arranged in the horizontal direction and spaced from each other, a portion of the first main rope between the first car suspension vehicle and the first counterweight suspension vehicle, a second main rope second car suspension vehicle and the second Avoid crossing each other on the vertical projection plane of the hoistway with the part between the counterweight and the suspension wheel. Each extends.

1 is a plan view showing an elevator apparatus according to Embodiment 1 of the present invention. It is a front view which shows the elevator apparatus of FIG. It is a top view which shows the elevator apparatus by Embodiment 2 of this invention. It is a front view which shows the elevator apparatus of FIG. It is a top view which shows the elevator apparatus by Embodiment 3 of this invention. It is a front view which shows the elevator apparatus of FIG. It is a top view which shows the elevator apparatus by Embodiment 4 of this invention. It is a front view which shows the elevator apparatus of FIG.

Preferred embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a plan view showing an elevator apparatus according to Embodiment 1 of the present invention. FIG. 2 is a front view showing the elevator apparatus of FIG. In the figure, a pair of car guide rails and a pair of counterweight guide rails are installed in the hoistway 1 (both not shown). The car 2 is guided by the car guide rails to be raised and lowered in the hoistway 1, and the counterweight 3 is raised and lowered in the hoistway 1 by being guided by the counterweight guide rails. In this example, the straight line connecting the car guide rails and the straight line connecting the counterweight guide rails are parallel to the straight line extending along the width direction of the hoistway 1 on the vertical projection plane of the hoistway 1. It has become.

  The car 2 includes first and second side face parts 2a and 2b facing each other between the car guide rails, a front face part 2c provided with the car doorway 4, and a back face part 2d facing the front face part 2c. ing. A pair of car doors 5 for opening and closing the car doorway 4 are provided on the front surface portion 2c. In this example, the dimension in the width direction of the car 2 (the dimension between the outer surfaces of the first and second side surfaces 2a and 2b) is the dimension in the depth direction of the car 2 (between the outer surfaces of the front surface portion 2c and the rear surface portion 2d The dimensions are larger than

  The counterweight 3 is opposed to the back surface portion 2 d on the vertical projection plane of the hoistway 1. That is, when the hoistway 1 is vertically projected, the counterweight 3 is disposed behind the area of the car 2 in the depth direction of the car 2.

  First and second drive units (winding machines) 12 and 13 for raising and lowering the car 2 and the counterweight 3 are arranged in the upper part of the hoistway 1. The first and second drive devices 12 and 13 are arranged at intervals in the width direction of the hoistway 1. Further, the first and second driving devices 12 and 13 are arranged in the area of the car 2 on the vertical projection plane of the hoistway 1. Further, the first and second driving devices 12 and 13 are arranged at substantially the same height.

  The first drive device 12 includes a first drive device main body 14 including a motor and a brake, and a first drive sheave 15 rotated by the first drive device main body 14. The second drive device 13 includes a second drive device main body 16 including a motor and a brake, and a second drive sheave 17 rotated by the second drive device main body 16. Further, the first and second drive devices 12 and 13 are thin in which the axial dimension is smaller than the diameter size of the first and second drive device bodies 14 and 16 or the diameter size of the first and second drive sheaves 15 and 17. It is considered to be a hoisting machine.

  The first and second drive units 12 and 13 are respectively horizontal (including substantially horizontal) so that the rotation axes of the first and second drive sheaves 15 and 17 are perpendicular to a horizontal plane (including a substantially horizontal plane). ). The first and second drive devices 12 and 13 are arranged such that the positions of the first and second drive sheaves 15 and 17 are above the first and second drive device bodies 14 and 16, respectively.

  A main rope body 18 for suspending the car 2 and the counterweight 3 in the hoistway 1 is wound around the first and second drive sheaves 15 and 17. The main rope body 18 is wound substantially horizontally around the plurality of first main ropes 19 (only one is shown in the figure) wound around the first drive sheave 15 and the second drive sheave 17. A plurality of second main ropes 20 (only one is shown in the figure).

  A pair of first car suspension wheels 25 and 26 around which the first main rope 19 is wound, and a pair of second car suspension wheels 27 and 28 around which the second main rope 20 is wound, are provided at the lower part of the car 2. Is provided. The first car suspension car 25 and the second car suspension car 27 are provided on the first side surface 2 a side of the lower part of the car 2, and the first car suspension car 26 and the second car suspension car 28 are provided at the lower part of the car 2. It is provided on the second side surface portion 2b side.

  At the upper part of the counterweight 3, a first counterweight suspension wheel 29 around which the first main rope 19 is wound and a second counterweight suspension wheel 30 around which the second main rope 20 is wound are provided. It has been. The first and second counterweight suspension vehicles 29 and 30 are provided side by side in the width direction of the counterweight 3.

  At the upper part of the hoistway 1, there are provided first and second car-side rope stops 21, 22 and first and second counterweight-side rope stops 23, 24. The first car side rope stopper 21 is disposed above the first car suspension wheel 26, and the second car side rope stopper 22 is disposed above the second car suspension wheel 27. In addition, the first counterweight-side leash stopper 23 is disposed above the first counterweight-suspended pulley 29, and the second counterweight-side rope retainer 24 is disposed above the second counterweight-suspender 30. Has been.

  The 1st main rope 19 has the 1st end part 19a connected to the 1st car side rope stop part 21, and the 2nd end part 19b connected to the 1st counterweight side rope stop part 23. Yes. The second main rope 20 has a third end 20a connected to the second car-side rope stopper 22 and a fourth end 20b connected to the second counterweight-side rope stopper 24. is doing.

  That is, a portion between the first drive sheave 15 and the first end 19a of the first main rope 19 is wound around the first car suspension wheels 25 and 26, and the second car suspension wheels 27 and 28 are The portion of the second main rope 20 between the second drive sheave 17 and the third end 20a is wound around. In addition, a portion between the first drive sheave 15 and the second end portion 19b of the first main rope 19 is wound around the first counterweight suspension wheel 29, and the second counterweight suspension wheel 30 is The portion of the second main rope 20 between the second drive sheave 17 and the fourth end 20b is wound around.

  Further, at the upper part of the hoistway 1, a first car side return wheel 31 for guiding the first main rope 19 to the first car suspension wheel 25 and a first main rope 19 for guiding the first main rope 19 to the first counterweight suspension wheel 29. A first counterweight side return wheel 32, a second car side return wheel 33 that leads the second main rope 20 to the second car suspension vehicle 28, and a second guide that leads the second main rope 20 to the second counterweight suspension vehicle 30. A two counterweight return wheel 34 is disposed. The rotation axes of the first car side return wheel 31, the first counterweight side return wheel 32, the second car side return wheel 33, and the second counterweight side return wheel 34 are horizontal (including substantially horizontal). Has been placed.

  The first car side return wheel 31 is disposed above the first car suspension wheel 25, and the second car side wheel return wheel 33 is disposed above the second car suspension wheel 28. The first counterweight wheel 32 is disposed above the first counterweight suspension wheel 29, and the second counterweight wheel 34 is disposed above the second counterweight suspension wheel 30.

  The first and second main ropes 19 and 20 extending in the substantially horizontal direction from the first drive sheave 15 are turned in the substantially vertical direction by the return wheels 31 to 34. For this reason, the return wheels 31 to 34 are arranged at substantially the same height as the first and second drive units 12 and 13.

  Further, on the upper part of the hoistway 1, a first turning sheave 35 around which a portion between the first drive sheave 15 of the first main rope 19 and the first car side return wheel 31 is wound, and a second main rope A second turning sheave 36 around which a portion between the 20 second driving sheave 17 and the second car side return wheel 33 is wound is disposed. The first and second turning sheaves 35 and 36 are arranged in the region of the car 2 on the vertical projection plane of the hoistway 1. The rotation axes of the first and second turning sheaves 35 and 36 are arranged perpendicular to a horizontal plane (including a substantially horizontal plane). Furthermore, the first and second turning sheaves 35 and 36 are disposed at substantially the same height as the first and second drive sheaves 15 and 17.

  The car 2 and the counterweight 3 are suspended in the hoistway 1 by the first main rope 19 and the second main rope 20 by a 2: 1 roping method. That is, the first main rope 19 is connected to the first car suspension wheels 26, 25, the first car side return wheel 31, the first turning sheave 35, the first drive sheave 15, the first counterweight from the first end 19a. The side turn wheel 32 and the first counterweight suspension wheel 29 are wound in this order and reach the second end 19b. In addition, the second main rope 20 extends from the third end 20a to the second car suspension wheels 27 and 28, the second car side return wheel 33, the second turning sheave 36, the second drive sheave 17, and the second counterweight. The side turn wheel 34 and the second counterweight suspension wheel 30 are wound in this order and reach the fourth end 20b.

  In the vertical projection plane of the hoistway 1, the first and second drive units 12 and 13 and the first and second turning sheaves 35 and 36 are related to the center line of the car 2 along the depth direction of the hoistway 1. Are arranged symmetrically. Further, a control device (not shown) for controlling the first and second drive devices 12 and 13 is provided in the hoistway 1.

  Next, the operation will be described. The first and second driving devices 12 and 13 are driven in synchronization with each other by a signal from the control device. Accordingly, the first and second drive sheaves 15 and 17 are rotated in synchronization with each other, and the car 2 and the counterweight 3 are raised and lowered.

  In such an elevator apparatus, the car 1 and the counterweight 3 are moved up and down in the hoistway 1 by the driving force of the first and second drive units 12 and 13, and the car 2 and the counterweight Since the weight 3 is suspended in the hoistway 1 by the first main rope 19 and the second main rope 20 in the 2: 1 roping method, the load applied to the first and second drive units 12 and 13 is reduced. This can be reduced, and the first and second driving devices 12 and 13 can be reduced in size. Thereby, the length of the hoistway 1 in the height direction can be shortened, and the horizontal sectional area of the hoistway 1 can be reduced. Therefore, the whole elevator apparatus can be reduced. Moreover, the degree of size increase of the elevator device accompanying the increase in capacity of the elevator device can be reduced.

  Moreover, since the return wheels 31-34 which guide the 1st and 2nd main ropes 19 and 20 to the suspension vehicles 25-30, respectively, are provided in the upper part of the hoistway 1, the first and second main ropes extending substantially horizontally. The first and second drive sheaves 19 and 20 can return from the first and second drive sheaves 19 and 20 to the return wheels 31 to 34 without interfering with the car 2 and the counterweight 3. The main ropes 19, 20 can be guided.

  Further, since the first turning sheave 35 around which the portion of the first main rope 19 between the first drive sheave 15 and the first car-side return wheel 31 is wound is disposed at the upper part of the hoistway 1, the first The winding angle of the main rope 19 with respect to the first drive sheave 15 and the first turning sheave 35 can be secured, and the traction capability can be increased. Thereby, the driving force of the 1st drive device 12 can be transmitted to the 1st main rope 19 more reliably, and the cage | basket | car 2 and the counterweight 3 can be raised / lowered more reliably.

  Further, since the second turning sheave 36 around which the portion of the second main rope 20 between the second drive sheave 17 and the second car side return wheel 33 is wound is disposed in the upper part in the hoistway 1, The winding angle with respect to the 2nd drive sheave 17 and the 2nd turning sheave 36 of the 2 main ropes 20 can be ensured, and traction capability can be increased. Thereby, the driving force of the 2nd drive device 13 can be transmitted to the 2nd main rope 20 more reliably, and the cage | basket | car 2 and the counterweight 3 can be raised / lowered more reliably.

  Further, since the first and second driving devices 12 and 13 are arranged in the area of the car 2 on the vertical projection plane of the hoistway 1, the horizontal sectional area of the hoistway 1 can be further reduced. The entire elevator device can be further reduced.

  In the above example, the portion of the first main rope 19 between the first drive sheave 15 and the first car side return wheel 31 is wound around the first turning sheave 35. A portion of the main rope 19 between the first drive sheave 15 and the first counterweight side return wheel 32 may be wound around the first turning sheave 35. Even in this case, the winding angle of the first main rope 19 with respect to the first drive sheave 15 and the first turning sheave 35 can be secured, and the traction capability can be increased.

  In the above example, the portion of the second main rope 20 between the second drive sheave 17 and the second car-side return wheel 33 is wound around the second turning sheave 36. A portion of the main rope 20 between the second drive sheave 17 and the second counterweight side return wheel 34 may be wound around the second turning sheave 36. Even in this case, the winding angle of the second main rope 20 with respect to the second drive sheave 17 and the second turning sheave 36 can be secured, and the traction capability can be increased.

Embodiment 2. FIG.
FIG. 3 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention. FIG. 4 is a front view showing the elevator apparatus of FIG. In the figure, the dimension of the car 2 in the width direction is smaller than the dimension of the car 2 in the depth direction. The first and second driving devices 12 and 13 are arranged at a distance from each other in the depth direction of the hoistway 1. Further, a portion between the first drive sheave 15 of the first main rope 19 and the first counterweight side return wheel 32 is wound around the first turning sheave 35. Furthermore, a portion between the second drive sheave 17 of the second main rope 20 and the second counterweight side return wheel 34 is wound around the second turning sheave 36. Other configurations are the same as those in the first embodiment.

  Thus, the elevator in which the dimension in the depth direction of the car 2 is larger than the dimension in the width direction of the car 2 and the counterweight 3 is arranged behind the area of the car 2 on the vertical projection plane of the hoistway 1. Even in the case of the device, the first and second driving devices 12 and 13 can be arranged in the region of the car 2 on the vertical projection plane of the hoistway 1, and the horizontal sectional area of the hoistway 1 can be reduced. it can.

  In the above example, the portion of the first main rope 19 between the first drive sheave 15 and the first counterweight side return wheel 32 is wound around the first turning sheave 35. A portion of the first main rope 19 between the first drive sheave 15 and the first car side return wheel 31 may be wound around the first turning sheave 35.

  In the above example, the portion of the second main rope 20 between the second drive sheave 17 and the second counterweight side return wheel 34 is wound around the second turning sheave 36. The portion of the second main rope 20 between the second drive sheave 17 and the second car side return wheel 33 may be wound around the second turning sheave 36.

Embodiment 3 FIG.
FIG. 5 is a plan view showing an elevator apparatus according to Embodiment 3 of the present invention. FIG. 6 is a front view showing the elevator apparatus of FIG. In the figure, the dimension of the car 2 in the width direction is larger than the dimension of the car 2 in the depth direction. Further, the counterweight 3 is opposed to the second side surface portion 2 b on the vertical projection plane of the hoistway 1. That is, when the hoistway 1 is vertically projected, the counterweight 3 is disposed on the lateral side of the car 2 region in the width direction of the car 2. Further, the first and second driving devices 12 and 13 are arranged so as to be shifted from each other in the width direction and the depth direction of the hoistway 1.

  The second car side rope stopper 22 is arranged above the second car suspension wheel 28. A third end 20 a of the second main rope 20 is connected to the second car-side rope stop 22. Further, the second car side return wheel 33 is disposed above the second car suspension wheel 27. The second main rope 20 extends from the third end 20a to the second car suspension wheel 28, the second car suspension wheel 27, the second car side return wheel 33, the second turning sheave 36, the second drive sheave 17, and the second The counterweight side return wheel 34 and the second counterweight suspension wheel 30 are wound in this order, and reach the fourth end 20b. Other configurations are the same as those in the first embodiment.

  In this way, the dimension in the width direction of the car 2 is larger than the dimension in the depth direction of the car 2, and the counterweight 3 is disposed laterally in the width direction of the area of the car 2 on the vertical projection plane of the hoistway 1. Even in the elevator apparatus, the first and second driving devices 12 and 13 can be arranged in the area of the car 2 on the vertical projection plane of the hoistway 1, and the horizontal cross-sectional area of the hoistway 1 can be reduced. be able to.

Embodiment 4 FIG.
FIG. 7 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention. FIG. 8 is a front view showing the elevator apparatus of FIG. In the figure, the dimension of the car 2 in the width direction is smaller than the dimension of the car 2 in the depth direction. The first and second driving devices 12 and 13 are arranged at a distance from each other in the depth direction of the hoistway 1. Other configurations are the same as those of the third embodiment.

  In this way, the dimension of the car 2 in the depth direction is larger than the dimension of the car 2 in the width direction, and the counterweight 3 is disposed on the lateral side of the car 2 region in the vertical projection plane of the hoistway 1. Even in the elevator apparatus, the first and second driving devices 12 and 13 can be arranged in the area of the car 2 on the vertical projection plane of the hoistway 1, and the horizontal cross-sectional area of the hoistway 1 can be reduced. be able to.

  In the third and fourth embodiments, the portion of the first main rope 19 between the first drive sheave 15 and the first car-side return wheel 31 is wound around the first turning sheave 35. However, the portion of the first main rope 19 between the first drive sheave 15 and the first counterweight-side return wheel 32 may be wound around the first turning sheave 35.

  In the third and fourth embodiments, the portion of the second main rope 20 between the second drive sheave 17 and the second car side return wheel 33 is wound around the second turning sheave 36. However, the portion of the second main rope 20 between the second drive sheave 17 and the second counterweight side return wheel 34 may be wound around the second turning sheave 36.

  In each of the above embodiments, the first turning sheave 35 may be omitted as long as the winding angle of the first main rope 19 with respect to the first drive sheave 15 can be secured. Furthermore, the second turning sheave 36 may not be provided as long as the winding angle of the second main rope 20 with respect to the second drive sheave 17 can be secured.

  In each of the above embodiments, the first and second drive devices 12 and 13 are arranged such that the first and second drive sheaves 15 and 17 are disposed above the first and second drive device bodies 14 and 16. The first and second driving devices 12 and 13 are installed so that the first and second driving sheaves 15 and 17 are disposed below the first and second driving device bodies 14 and 16. Also good.

Moreover, in each said embodiment, although the cage | basket | car 2 and the counterweight 3 are raised / lowered in the hoistway 1 with the drive force of the two drive devices 12 and 13, three or more drive devices are used. You may make it raise / lower the cage | basket | car 2 and the counterweight 3 with the driving force of. In this case, the car 2 and the counterweight 3 are respectively provided with a car suspension car and a counterweight suspension car corresponding to each driving device, and a car side turn corresponding to each driving device is provided above the hoistway 1. A car, a counterweight side return wheel, and a turning sheave are provided. Further, the car 2 and the counterweight 3 are suspended in the hoistway 1 by a main rope body having the same number of main ropes as the number of drive devices.

Claims (4)

A first drive device having a first drive sheave and disposed above the hoistway so that a rotation axis of the first drive sheave is perpendicular to a horizontal plane;
A second drive device having a second drive sheave and disposed above the hoistway so that a rotation axis of the second drive sheave is perpendicular to a horizontal plane;
A car that is raised and lowered in the hoistway by the driving force of the first and second driving devices;
A counterweight that is raised and lowered in the hoistway by the driving force of the first and second driving devices;
A first main rope wrapped around the first drive sheave including a first end and a second end connected to the upper part of the hoistway; a third end connected to the upper part of the hoistway; A main rope body that includes a fourth end portion and a second main rope wound around the second drive sheave, and suspends the car and the counterweight in the hoistway;
A first car suspension wheel provided on the car and wound around a portion between the first drive sheave and the first end of the first main rope;
A second car suspension wheel provided on the car and wound around a portion between the second drive sheave and the third end of the second main rope;
A first counterweight suspension wheel provided on the counterweight and wound around a portion between the first drive sheave and the second end of the first main rope; and provided on the counterweight. A second counterweight suspension wheel around which a portion between the second drive sheave and the fourth end of the second main rope is wound ,
The first drive sheave and the second drive sheave are spaced apart from each other in the horizontal direction,
A portion of the first main rope between the first car suspension vehicle and the first counterweight suspension vehicle; a second cage suspension vehicle and the second counterweight suspension vehicle of the second main rope; The elevator apparatus is characterized in that each of the parts extends between the vertical projection planes of the hoistway so as not to cross each other . A first car-side return wheel disposed at an upper part of the hoistway and guiding the first main rope from the first drive sheave to the first car suspension;
A first counterweight-side return wheel disposed at an upper part of the hoistway and guiding the first main rope from the first drive sheave to the first counterweight suspension vehicle;
A second car-side return wheel arranged at the upper part of the hoistway and guiding the second main rope from the second drive sheave to the second car suspension car; and an upper part of the hoistway, the second drive The elevator apparatus according to claim 1, further comprising a second counterweight-side return wheel that guides the second main rope from the sheave to the second counterweight suspension vehicle. A portion of the first main rope between the first drive sheave and the first car-side return wheel, and the first drive sheave and the first of the first main rope . A first turning sheave around which at least one of the portions between the counterweight-side return wheel and the second drive sheave of the second main rope and the second are arranged on the hoistway; A second turning sheave around which at least one of a portion between the car side return wheel and a portion between the second drive sheave of the second main rope and the second counterweight side return wheel is wound. The elevator apparatus according to claim 2, further comprising:   The elevator apparatus according to any one of claims 1 to 3, wherein the first and second driving devices are arranged in a region of the car within a vertical projection plane of the hoistway. .

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