JP5693723B2 - Double deck elevator - Google Patents

Description

  The present invention relates to a double deck elevator capable of adjusting a distance between an upper car and a lower car.

  Conventionally, in order to adjust the distance between the upper car and the lower car, a rope for hanging the upper car and the lower car is wrapped around the drive sheave of the hoisting machine for adjusting the car position provided on the main frame, There is known a double deck elevator in which an upper car and a lower car are moved up and down with respect to a main frame by rotating a drive sheave. One end and the other end of the rope are respectively connected to the upper part of the main frame. The rope is wound around a suspension car of an upper car between the drive sheave and one end of the rope, and is wound around a suspension car of the lower car between the driving sheave and the other end of the rope. Therefore, the suspension system of the upper car and the lower car by the rope is a 2: 1 roping system (see Patent Documents 1 and 2).

JP 2007-331871 A JP 2000-309482 A

  However, if the capacity of the upper car and the lower car increases as the elevator capacity increases, the load on the car position adjustment hoist increases, so the car position adjustment hoist increases. End up. As a result, the entire double deck elevator is increased in size and costs are increased.

  The present invention has been made to solve the above-described problems, and provides a double-deck elevator that can suppress an increase in size and cost even if the number of passengers in the upper car and the lower car increases. For the purpose.

  A double deck elevator according to the present invention includes a main frame that can be moved up and down in a hoistway, an upper car that can move up and down inside the main frame, a lower car that is arranged below the upper car inside the main frame, and can move up and down, A car position adjusting drive sheave, provided at the top of the main frame, for generating a driving force for moving the upper car and the lower car up and down, a car position adjusting drive device, and a first upper car respectively provided on the upper car A car suspension car and a second upper car suspension car, a first lower car suspension car and a second lower car suspension car provided in the lower car, an upper car side return car provided in the upper part of the main frame, and Lower car side return wheel, and one end and the other end respectively connected to the upper part of the main frame, and from one end, the first upper car hanger, the upper car hanger, the second upper car hanger Car, car position adjustment drive sheave, first lower car suspension car, lower car side return car Wound in order of the second lower car suspending pulley, it has reached the other end portion, and a squirrel position adjusting suspension member suspending the upper car and the lower car against the main frame.

  In the double deck elevator according to the present invention, the car position adjusting suspension for suspending the upper car and the lower car has one end and the other end respectively connected to the upper part of the main frame. Upper car suspension car, upper car side return car, second upper car suspension car, car sheave adjustment drive sheave, first lower car suspension car, lower car side return car and second lower car suspension car Since it is wound and reaches the other end, the load applied to the car position adjusting drive device can be reduced even if the number of passengers in the upper car and the lower car increases. As a result, it is possible to suppress an increase in the size of the car position adjusting drive device due to an increase in the passenger capacity of the upper car and the lower car, and it is possible to suppress an increase in the size of the entire double deck elevator. In addition, since the size of the car position adjusting drive device can be suppressed, an increase in cost can also be suppressed.

It is a block diagram which shows the double deck elevator by Embodiment 1 of this invention. It is sectional drawing along the II-II line of FIG. It is sectional drawing along the III-III line of FIG. It is sectional drawing along the IV-IV line of FIG. It is sectional drawing along the VV line of FIG. It is sectional drawing along the VI-VI line of FIG. It is an enlarged view which shows the VII part of FIG. It is a top view which shows a part of lower part of the lower cage | basket | car of FIG. It is a side view which shows a part of lower part of the lower cage | basket | car of FIG.

Preferred embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a block diagram showing a double deck elevator according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. 1, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1, FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 5 is a cross-sectional view taken along line VV in FIG. 1, and FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. In the figure, a hoisting machine (main drive device) 2 having a main drive sheave 2a and a deflecting wheel 3 arranged away from the main drive sheave 2a are provided at the upper part of the hoistway 1. A plurality of main ropes (for example, ropes, belts, etc.) 4 are wound around the main drive sheave 2 a and the deflecting wheel 3. A car device 5 and a counterweight 6 that can move up and down in the hoistway 1 are suspended from the main rope 4. The car device 5 is connected to one end of the main rope 4, and the counterweight 6 is connected to the other end of the main rope 4. Therefore, the hanging method of the car device 5 and the counterweight 6 by the main rope 4 is a 1: 1 roping method.

  In the hoistway 1, a pair of car device guide rails for guiding the raising / lowering of the car device 5 and a pair of counterweight guide rails for guiding the raising / lowering of the counterweight 6 are installed (both not shown). ) When the main drive sheave 2a is rotated by the driving force of the hoisting machine 2, the car device 5 is raised and lowered while being guided by each car device guide rail, and the counterweight 6 is raised and lowered while being guided by each counterweight guide rail. Is done.

  The car device 5 is disposed below the upper car 8 inside the main frame 7 and the upper car 8 that can move up and down inside the main frame 7. And a lower basket 9. The upper car 8 and the lower car 9 are arranged on the inner side of the main frame 7 with their respective width directions coinciding with the width direction of the car device 5.

  The main frame 7 is disposed above the pair of vertical frames 10 and the upper cage 8, and is disposed below the upper cage 11 and the lower cage 9 horizontally fixed between the upper ends of the vertical frames 10, respectively. A lower beam 12 that is horizontally fixed between the lower ends of the vertical frame 10, and an intermediate beam 13 that is disposed between the upper car 8 and the lower car 9 and that is horizontally fixed between the intermediate parts of the vertical frames 10; have. The main rope 4 is connected to the upper beam 11.

  The main frame 7 includes a pair of upper car guide rails (car position adjusting guide rails) 14 for guiding the vertical movement of the upper car 8 and a pair of lower car guide rails (car position for guiding the vertical movement of the lower car 9). An adjustment guide rail 15 is fixed. Each upper car guide rail 14 is arranged on both sides of the upper car 8 in the width direction of the upper car 8. Each lower car guide rail 15 is disposed on both sides of the lower car 9 in the width direction of the lower car 9.

  A car position adjustment driving device 16 that generates a driving force for moving the upper car 8 and the lower car 9 up and down is provided on the upper beam 11 (that is, the upper part of the main frame 7). The car position adjusting drive device 16 has a car position adjusting drive sheave 17. The car position adjusting drive sheave 17 is rotated by the driving force of the car position adjusting driving device 16. The rotation axis of the car position adjusting drive sheave 17 is parallel to the depth direction of the upper car 8 and the lower car 9.

  As shown in FIG. 5, a pair of first upper car suspension wheels 18 that are arranged apart from each other in the width direction of the upper car 8 and the upper car 8 are separated from each other in the width direction. A pair of second upper car suspension wheels 19 arranged is attached. The respective rotation axes of the first upper car suspension cars 18 and the second upper car suspension cars 19 are arranged along the depth direction of the upper car 8.

  As shown in FIG. 5, the first upper car suspension car 18 and the second upper car suspension car 19 have a vertical projection plane of the hoistway 1 (that is, when the hoistway 1 is projected along the vertical direction). (Horizontal plane) is arranged with a straight line A connecting the upper car guide rails 14 interposed therebetween. In this example, the first upper car suspension car 18 and the second upper car suspension car 19 are arranged at symmetrical positions with respect to the straight line A connecting the upper car guide rails 14 in the vertical projection plane of the hoistway 1. Has been.

  As shown in FIG. 6, a pair of first lower car suspension wheels 20 disposed apart from each other in the width direction of the lower car 9 and a lower car 9 are separated from each other in the width direction of the lower car 9. A pair of second lower car suspension wheels 21 arranged is attached. The respective rotation axes of each first lower car suspension car 20 and each second lower car suspension car 21 are arranged along the depth direction of the lower car 9.

  As shown in FIG. 6, the first lower car suspension car 20 and the second lower car suspension car 21 sandwich a straight line B connecting the lower car guide rails 15 in the vertical projection plane of the hoistway 1. Is arranged in. In this example, the first lower car suspension car 20 and the second lower car suspension car 21 are arranged at symmetrical positions with respect to the straight line B connecting the lower car guide rails 15 in the vertical projection plane of the hoistway 1. Has been.

  As shown in FIG. 1, an upper car side return wheel 22 and a lower car side return wheel 23 are attached to the upper beam 11 (upper part of the main frame 7). The rotation axes of the upper car side return wheel 22 and the lower car side return wheel 23 are arranged along the width direction of the car device 5.

  The upper car 8 and the lower car 9 are suspended from the main frame 7 by a car position adjusting rope (car position adjusting suspension) 24. The car position adjusting suspension for suspending the upper car 8 and the lower car 9 may be a belt. On the upper beam 11 (upper part of the main frame 7), a first leashing device 25 and a second leashing device 26 are provided. The car position adjusting rope 24 has one end 24a connected to the upper beam 11 via the first leashing device 25 and the other end connected to the upper beam 11 via the second leashing device 26. 24b.

  The car position adjustment rope 24 is connected to each first upper car suspension car 18, upper car side return wheel 22, each second upper car suspension car 19, car position adjustment drive sheave 17, and each first end 24 a. The lower car suspension car 1, the lower car side return wheel 23, and the second lower car suspension car 21 are wound in this order and reach the other end 24 b. That is, the hanging direction of the upper car 8 and the lower car 9 by the car position adjusting rope 24 is a 4: 1 roping method. The upper car 8 and the lower car 9 are moved up and down in the direction in which the distance between the upper car 8 and the lower car 9 changes as the car position adjusting drive sheave 17 rotates.

  The upper car 8 includes an upper car frame 27 and an upper car chamber 28 supported by the upper car frame 27 and surrounded by the upper car frame 27. Each first upper car suspension wheel 18 and each second upper car suspension wheel 19 are provided on the upper part of the upper car frame 27.

  The lower car 9 includes a lower car frame 29 and a lower car chamber 30 supported by the lower car frame 29 and surrounded by the lower car frame 29. Each first lower car suspension car 20 and each second lower car suspension car 21 are provided at the lower part of the lower car frame 29.

  A pair of upper car emergency stop portions 31 that apply braking force to the upper car 8 by gripping the upper car guide rails 14 are provided at the lower part of the upper car frame 27 (lower part of the upper car 8). As shown in FIG. 5, the upper car emergency stop portion 31 is disposed on a straight line A connecting the upper car guide rails 14 in the vertical projection plane of the hoistway 1.

  Under the lower car frame 29 (lower part of the lower car 9), a pair of lower car emergency stop portions 32 that provide a braking force to the lower car 9 by gripping each lower car guide rail 15 are provided. As shown in FIG. 6, the emergency stop 32 for the lower car is disposed between the first lower car suspension car 20 and the second lower car suspension car 21 in the vertical projection plane of the hoistway 1. And it arrange | positions on the straight line B which connects between each lower cage | basket | car guide rail 15. FIG.

  FIG. 7 is an enlarged view showing a portion VII in FIG. 8 is a top view showing a part of the lower part of the lower car 9 in FIG. 7, and FIG. 9 is a side view showing a part of the lower part of the lower car 9 in FIG. In the figure, the lower car emergency stop portion 32 is disposed between the first lower car suspension car 20 and the second lower car suspension car 21 in the horizontal direction. Further, the lower car emergency stop portion 32 is disposed between a pair of guide portions 33 disposed on both sides of the lower car guide rail 15 in the horizontal direction, and between each of the guide portions 33 and the lower car guide rail 15. A pair of wedges (braking members) 34 and an elastic spring 35 disposed between the guide portions 33 so as to avoid the lower car guide rail 15.

  Each guide portion 33 is rotatable about an axis along the lower car guide rail 15. The distance between the one end portions of each guide portion 33 is increased by rotating each guide portion 33 in the direction in which the distance between the other end portions of each guide portion 33 is decreased. Each guide portion 33 is rotated in the direction in which the distance between the two increases, and the distance decreases. A lower car guide rail 15 is passed between one end portions of the guide portions 33, and wedges 34 are arranged. An elastic spring 35 is disposed between the other end portions of each guide portion 33.

  Each guide portion 33 is provided with an inclined portion that is inclined while the distance from the lower car guide rail 15 extends downward. The wedge 34 is disposed between the inclined portion of the guide portion 33 and the lower car guide rail 15.

  The wedge 34 can be displaced in the vertical direction with respect to the lower car 9 while being guided along the inclined portion of the guide portion 33. Each wedge 34 comes into contact with the lower car guide rail 15 by an upward displacement with respect to the lower car 9, and is separated from the lower car guide rail 15 by a downward displacement with respect to the lower car 9. When each wedge 34 comes into contact with the lower car guide rail 15 while the lower car 9 is moving downward, each wedge 34 is connected to each guide part 33 while increasing the distance between one end parts of each guide part 33. It bites between the lower car guide rail 15.

  The elastic spring 35 is in a natural length state in which each wedge 34 is not expanded or contracted when each wedge 34 is separated from the lower car guide rail 15. Further, the elastic spring 35 is configured such that when each wedge 34 is engaged between each guide portion 33 and the lower car guide rail 15 and one end portion of each guide portion 33 expands, the other end portions of each guide portion 33 are connected to each other. The elastic repulsion force is generated by being contracted by the displacement of. Thus, each wedge 34 is pressed against the lower car guide rail 15 from both sides to grip the lower car guide rail 15. The emergency stop portion 32 for the lower car gives a braking force by gripping the lower car guide rail 15 with each wedge 34.

  The configuration of the upper car emergency stop portion 31 is the same as the configuration of the lower car emergency stop portion 32. The upper car emergency stop portion 31 applies a braking force to the upper car 8 by gripping the upper car guide rail 14 with each wedge of the upper car emergency stop portion 31.

  The upper car emergency stop portion 31 is provided with an upper car operation lever (not shown) for displacing the wedge of the upper car emergency stop portion 31 in the vertical direction. The lower car emergency stop portion 32 is provided with a lower car operating lever (not shown) for displacing the wedge 34 in the vertical direction. When the upper car 8 and the lower car 9 are simultaneously displaced downward with respect to the main frame 7, the upper car operating lever and the lower car operating lever are operated between the upper car operating lever and the lower car operating lever. An emergency stop operating device (not shown) is provided. The upper car emergency stop portion 31 and the lower car emergency stop portion 32 are respectively operated by operating the upper car operating lever and the lower car operating lever by the emergency stop operating device.

  Next, the operation will be described. The car device 5 and the counterweight 6 are moved up and down in the hoistway 1 by the driving force of the hoisting machine 2. The upper car 8 and the lower car 9 are simultaneously landed on the landing floors adjacent to each other in the vertical direction, but the floor space of the building is not necessarily constant and may differ depending on the floor.

  In this case, the upper car 8 and the lower car 9 are moved up and down with respect to the main frame 7 by the driving force of the car position adjusting drive device 16, and the distance between the upper car 8 and the lower car 9 is adjusted according to the floor space. The That is, as the upper car 8 is raised and the lower car 9 is lowered, the distance between the upper car 8 and the lower car 9 is increased. Further, as the upper car 8 is lowered and the lower car 9 is raised, the interval between the upper car 8 and the lower car 9 is reduced.

  For example, when the car position adjusting rope 24 is broken, each of the upper car 8 and the lower car 9 is displaced downward by gravity. When each of the upper car 8 and the lower car 9 is displaced downward, the upper car emergency stop portion 31 and the lower car emergency stop portion 32 are operated, and braking force is applied to the upper car 8 and the lower car 9. It is done. Thereby, the fall of the upper car 8 and the lower car 9 is prevented.

  In such a double deck elevator, the upper car 8 and the lower car 9 are suspended from the main frame 7 by the car position adjusting rope 24, and the upper car 8 and the lower car 9 are suspended by the car position adjusting rope 24. Since the method is a 4: 1 roping method, even if the number of passengers in the upper car 8 and the lower car 9 increases, the load on the car position adjusting drive device 16 can be reduced. Thereby, the increase in the size of the car position adjusting drive device 16 due to an increase in the number of passengers in the upper car 8 and the lower car 9 can be suppressed, and the increase in the size of the entire double deck elevator can be suppressed. Moreover, since the increase in size of the car position adjusting drive device 16 can be suppressed, an increase in cost can also be suppressed.

  In addition, in the vertical projection plane of the hoistway 1, the first upper car suspension car 18 and the second upper car suspension car 19 are arranged across a straight line A connecting the upper car guide rails 14. The upper car emergency stop 31 is arranged on the straight line A, and the first lower car suspension car 20 and the second lower car suspension car 21 are arranged across the straight line B connecting the lower car guide rails 15. Since the lower car emergency stop portion 32 is arranged on the straight line B, the center of gravity of the upper car emergency stop portion 31 and the suspension core of the upper car 8 can be made to coincide with each other. The center of gravity of the emergency stop portion 32 and the suspension core of the lower car 9 can be matched. As a result, it is possible to reduce the unbalanced load received by the upper car guide rail 14 and the lower car guide rail 15 from the upper car 8 and the lower car 9, respectively, and to reduce the strength of the upper car guide rail 14 and the lower car guide rail 15. can do. Thereby, the weight reduction of the upper car guide rail 14 and the lower car guide rail 15 can be achieved, and the cost of the double deck elevator can be reduced.

  In the above example, the car position adjusting drive device 16 is provided on the upper portion of the upper beam 11. However, the car position adjusting drive device 16 may be provided on the lower portion of the upper beam 11.

  In the above example, the first upper car suspension car 18 and the second upper car suspension car 19 are provided on the upper part of the upper car 8, but the first upper car suspension car 18 and the second upper car suspension car 19 are provided. A car suspension wheel 19 may be provided in the lower part of the upper car 8.

  In the above example, the first lower car suspension car 20 and the second lower car suspension car 21 are provided in the lower part of the lower car 9, but the first lower car suspension car 20 and the second lower car suspension car 21 are provided. The car suspension wheel 21 may be provided on the upper part of the lower car 9.

  1 hoistway, 7 main frame, 8 upper car, 9 lower car, 14 upper car guide rail (car position adjusting guide rail), 15 lower car guide rail (car position adjusting guide rail), 16 car position adjusting drive Device, 17 car position adjusting drive sheave, 18 first upper car suspension car, 19 second upper car suspension car, 20 first lower car suspension car, 21 second lower car suspension car, 22 upper car side Return wheel, 23 Lower car side return wheel, 24 Car position adjustment rope (car position adjustment suspension), 24a One end, 24b Other end, 31 Upper car emergency stop, 32 Lower car emergency stop .

Claims (2)

A main frame that can be raised and lowered in the hoistway,
An upper basket that can move up and down inside the main frame,
A lower car which is arranged inside the main frame and below the upper car and is movable up and down;
A car position adjusting drive device which has a car sheave adjusting drive sheave and is provided at an upper part of the main frame and generates a driving force for moving the upper car and the lower car up and down;
A first upper car suspension car and a second upper car suspension car respectively provided on the upper car and each having a rotation axis parallel to the rotation axis of the car position adjusting drive sheave ;
A first lower car suspension car and a second lower car suspension car respectively provided on the lower car and each having a rotation axis parallel to the rotation axis of the car position adjusting drive sheave ;
An upper car side return wheel and a lower car side return wheel provided at the upper part of the main frame, respectively, and one end part and the other end part respectively connected to the upper part of the main frame. 1 upper car suspension car, the upper car side return car, the second upper car suspension car, the car position adjusting drive sheave, the first lower car suspension car, the lower car side return car, and the second And a car position adjusting suspension for hanging the upper car and the lower car with respect to the main frame. Double deck elevator. A pair of car position adjustment guide rails fixed to the main frame in a state of being arranged on both sides of the upper car and the lower car, and for guiding the vertical movement of the upper car and the lower car;
An upper car emergency stop portion that provides braking force to the upper car by gripping each of the car position adjusting guide rails provided on the upper car, and each of the car position adjusting guides provided on the lower car. The vehicle further comprises an emergency stop for a lower car that applies braking force to the lower car by gripping the rail,
The first upper car suspension car and the second upper car suspension car are arranged in a vertical projection plane of the hoistway across a straight line connecting the car position adjustment guide rails,
The first lower car suspension car and the second lower car suspension car are arranged in a vertical projection plane of the hoistway with a straight line connecting between the car position adjusting guide rails interposed therebetween,
The upper car emergency stop part and the lower car emergency stop part are respectively arranged on a straight line connecting the respective car position adjusting guide rails in the vertical projection plane of the hoistway. The double deck elevator according to claim 1.

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