JP2011051736A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device which reduces energy for lifting a car, and also reduces an overhead dimension of the car. <P>SOLUTION: This elevator device 1 includes the car 5 freely liftable in a hoistway 2 while being guided by a pair of guide rails 3a and 3b arranged in the hoistway 2 of an elevator, and a driving part 7 for driving the car 5 via a connecting member 6. The car 5 includes a car body 10 and a car frame 12 including a lower beam 13 for supporting the car body 10. The lower beam 13 is arranged under the car body 10, and extends in parallel to the width direction of the hoistway 2. Car lower side guide parts 19a and 19b for guiding the car body 10 to the pair of guide rails 3a and 3b are respectively arranged at both ends of the lower beam 13, and car side sheaves 20a and 20b wound with a connecting member 6 are respectively rotatably arranged. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus capable of reducing energy for raising and lowering a car and reducing overhead dimensions of the car.

  Conventionally, a car that is guided by a pair of guide rails provided in the hoistway to move up and down in the hoistway, a counterweight connected to the car via a main rope, and the main rope are wound up. There is known an elevator apparatus provided with a hoisting machine. For example, in the elevator apparatus 100 shown in FIG. 10, the car 101 is provided with a car frame 103 that supports the car body 102, and a pair of guide rails ( A car upper guide part (not shown) such as a roller for guiding the car 101 is attached to the car 101 (not shown). A sheave support beam 105 is fixed to the lower surface of the upper beam 104 above the car body 102. A car sheave 107 around which the main rope 106 is wound is attached to both ends of the sheave support beam 105 (see, for example, Patent Documents 1 and 2).

JP 2004-338907 A JP 2006-240777 A

  However, in such an elevator apparatus 100, the car-side sheave 107 is fixed to the upper beam 104 via the sheave support beam 105. Accordingly, it is necessary to increase the strength of the upper beam 104 by taking measures such as increasing the thickness of the plate member constituting the upper beam 104 or increasing the size of the plate member. In this case, the mass of the upper beam 104 is increased and the mass of the car 101 is increased. For this reason, it is necessary to increase the mass of a counterweight (not shown) connected to the car 101 via the main rope 106 in order to balance the car 101. As a result, there has been a problem that a large amount of energy (electric power) is consumed to raise and lower the car 101.

  Further, a sheave support beam 105 for attaching the car-side sheave 107 is interposed between the upper surface of the car body 102 and the upper beam 104. As a result, there is a problem that the dimension (top clearance) from the car 101 stopped on the top floor to the ceiling of the hoistway becomes small. As described above, when the height dimension of the upper beam 104 is increased in order to increase the strength of the upper beam 104, the top clearance is further decreased. In the machine roomless elevator apparatus, hoistway equipment such as a hoisting machine is attached to the ceiling of the hoistway, so that it becomes more difficult to secure the top clearance. In order to secure the top clearance under such circumstances, it is necessary to increase the dimension (overhead dimension) between the landing floor on the top floor and the ceiling of the hoistway.

  The present invention has been made in consideration of the above points, and reduces the energy required for raising and lowering the car, and the top clearance between the car stopped on the top floor and the ceiling of the hoistway. An object of the present invention is to provide an elevator apparatus that can ensure and reduce the overhead dimension of a hoistway.

  The present invention is directed to a pair of guide rails provided in a hoistway of an elevator, and can be moved up and down in the hoistway, and a counterweight connected to the car via a connecting member. And a drive unit that drives the car via the connecting member, and the car has a car body and a car frame including a lower beam that supports the car body, A lower beam is provided below the car body, extends in parallel to the width direction of the hoistway, and guides the car body to both ends of the lower beam with respect to the pair of guide rails. The elevator apparatus is characterized in that a car lower guide portion is provided, and a car sheave around which the connecting member is wound is rotatably provided.

  In the present invention, the lower beam includes a pair of vertical plate members, and each of the car sheaves is rotatably supported between the pair of vertical plate members. The elevator apparatus is characterized in that it is arranged outside one of the vertical plate members, and the other car lower guide portion is arranged outside the other vertical plate member.

  In the present invention, the lower beam has a pair of vertical plate members, each of the car lower guide portions is disposed between the pair of vertical plate members, and each of the car sheaves has one of the vertical plates. It is arranged outside the plate member, a bracket is attached to the one vertical plate member, and each car sheave is rotatably supported between the one vertical plate member and the bracket. It is an elevator apparatus.

  The present invention is the elevator apparatus characterized in that the bracket is composed of a pair of bracket divided bodies provided on the car-side sheaves.

  The present invention is the elevator apparatus characterized in that each bracket divided body cantilever-supports a corresponding car-side sheave.

  The present invention is the elevator apparatus characterized in that each bracket divided body supports both the corresponding car-side sheaves.

  In the present invention, the lower beam has a pair of vertical plate members, each of the car lower guide portions is disposed between the pair of vertical plate members, and the one car side sheave The other car-side sheave is arranged outside the vertical plate member, and the other car-side sheave is arranged outside the other vertical plate member so that the rotation surface of each car-side sheave is in the width direction of the hoistway. The first bracket is attached to the one vertical plate member, and the one car-side sheave is rotatable between the one vertical plate member and the first bracket. The second bracket is attached to the other vertical plate member, and the other car-side sheave is rotatably supported between the other vertical plate member and the second bracket. It is an elevator apparatus.

  The present invention is the elevator apparatus characterized in that the first bracket cantilever-supports the one car-side sheave and the second bracket cantilever-supports the other car-side sheave.

  The present invention is the elevator apparatus characterized in that the first bracket supports both the one car-side sheaves and the second bracket supports both the other car-side sheaves.

  The present invention relates to a car that is guided by a pair of guide rails provided in a hoistway of an elevator, and is movable up and down in the hoistway, and a counterweight connected to the car via a connecting member. A drive unit that drives the car via the connecting member, and the car has a car body and a car frame including a lower beam that supports the car body, A beam is provided below the car body, extends obliquely with respect to the width direction of the hoistway, and guides the car body with respect to the pair of guide rails at both ends of the lower beam. A car side guide portion is provided, a bracket extending in parallel with the width direction of the hoistway is provided below the lower beam, and the connecting member is wound around both ends of the bracket. Each sheave is freely rotatable It is an elevator apparatus according to claim being.

  The present invention is the elevator apparatus, wherein the connecting member is composed of a plurality of ropes.

  The present invention is the elevator apparatus characterized in that the connecting member is a flat belt having a rectangular cross section.

  The present invention is the elevator apparatus, wherein the connecting member is made of a steel belt.

  ADVANTAGE OF THE INVENTION According to this invention, while reducing the energy for raising / lowering a passenger car, the overhead clearance of a hoistway can be reduced by ensuring the top clearance between the passenger car stopped on the top floor and the ceiling.

FIG. 1 is a schematic diagram illustrating an example of the overall configuration of an elevator apparatus according to a first embodiment of the present invention. FIG. 2 is a schematic diagram illustrating another example of the overall configuration of the elevator apparatus according to the first embodiment of the present invention. Fig.3 (a) is a side view which shows the cage | basket | car of the elevator apparatus in the 1st Embodiment of this invention. FIG.3 (b) is the figure which looked at the cage side sheave and the cage | basket | car lower side guide part in Fig.3 (a) from upper direction. Fig.4 (a) is a side view which shows the passenger car of the elevator apparatus in the 2nd Embodiment of this invention. FIG.4 (b) is the figure which looked at the cage side sheave and the cage | basket | car lower side guide part in Fig.4 (a) from upper direction. Fig.5 (a) is a side view which shows the passenger car of the elevator apparatus in the 3rd Embodiment of this invention. FIG.5 (b) is the figure which looked at the cage side sheave and the cage | basket | car lower side guide part in Fig.5 (a) from upper direction. Fig.6 (a) is a side view which shows the passenger car of the elevator apparatus in the 4th Embodiment of this invention. FIG.6 (b) is the figure which looked at the cage side sheave and the cage | basket | car lower side guide part in Fig.6 (a) from upper direction. Fig.7 (a) is a side view which shows the passenger car of the elevator apparatus in the 5th Embodiment of this invention. FIG.7 (b) is the figure which looked at the cage side sheave and the cage | basket | car lower side guide part in Fig.7 (a) from upper direction. Fig.8 (a) is a side view which shows the passenger car of the elevator apparatus in the 6th Embodiment of this invention. FIG. 8B is a view of the car sheave and the car lower guide portion in FIG. 8A as viewed from above. FIG. 9 is a view of a car sheave and a car lower guide part as viewed from above in an elevator apparatus according to a seventh embodiment of the present invention. FIG. 10 is a perspective view showing a car of a conventional elevator apparatus.

DESCRIPTION OF EXEMPLARY EMBODIMENTS First Embodiment Hereinafter, an embodiment of the invention will be described with reference to the drawings. Here, FIG. 1 thru | or FIG. 3 is a figure which shows the elevator apparatus in the 1st Embodiment of this invention.

  First, an example of the overall configuration of a machine roomless type elevator apparatus 1 will be described with reference to FIG. As shown in FIGS. 1 and 3A and 3B, the elevator apparatus 1 is guided by a pair of car-side guide rails 3a and 3b provided in the hoistway 2 to move up and down in the hoistway 2. A car 5 that can be stopped at each of the plurality of landings 4 and a counterweight 7 connected to the car 5 via a main rope (connecting member) 6 are provided. Among these, each platform 4 is provided with a platform door 4a that can be freely opened and closed. The counterweight 7 has one or two weight side sheaves 7a around which the main rope 6 is wound. The pair of car-side guide rails 3a and 3b are arranged so as to be shifted from each other in the depth direction of the hoistway 2 as shown in FIG.

  Here, the connecting member is composed of a main rope 6 including a plurality of small-diameter ropes having an outer diameter of 4 to 6 millimeters. However, the present invention is not limited to this, and the connecting member may be a flat belt (not shown) having a rectangular cross section and made of a high-strength fiber fabric. Alternatively, the connecting member may be a steel belt (not shown).

  In the hoistway 2, a pair of weight side guide rails 8a and 8b for guiding the counterweight 7 so as to be movable up and down are provided. The pair of weight side guide rails 8 a and 8 b are arranged on the side of the car 5.

  As shown in FIG. 1, a hoisting machine (driving unit) 9 having a traction sheave 9 a around which a main rope 6 is wound is installed in the vicinity of the ceiling 2 a of the hoistway 2. The main rope 6 is wound up by the hoisting machine 9 so that the car 5 and the counterweight 7 are driven. In the hoisting machine 9, as shown in FIG. 3 (b), the rotational surface of the traction sheave 9a is in the width direction of the hoistway 2 (the opening / closing direction of the landing door 4a of the landing 4 or the car door 11 of the passenger car 5). It is installed so that it may incline with respect to the car 5 when viewed from the ceiling 2 a side of the hoistway 2.

  As shown in FIGS. 3A and 3B, the car 5 includes a car body 10, a car door 11 that is provided in the car body 10 so as to be openable and closable, and that faces the landing door 4 a of the landing 4. And a car frame 12 including a lower beam 13 that supports the car body 10. Of these, the lower beam 13 is provided below the car body 10 and extends parallel to the width direction of the hoistway 2. The car frame 12 further includes an upper beam 14 provided above the car body 10 and a pair of vertical beams 15 connected between the upper beam 14 and the lower beam 13.

  The lower beam 13 includes a pair of vertical plate members 16, 17, that is, a first vertical plate member 16 positioned on the landing 4 side, a second vertical plate member 17 positioned on the opposite side of the landing 4 side, and a first vertical plate. An adapter 18 connected between the member 16 and the second vertical plate member 17 is provided. Each adapter 18 is disposed between the car-side sheaves 20a and 20b.

  Car lower side guide portions 19a and 19b for guiding the car body 10 along the pair of car side guide rails 3a and 3b are provided at both ends of the lower beam 13, and the car side around which the main rope 6 is wound. Sheaves 20a and 20b are rotatably provided.

  Among these, each car-side sheave 20a, 20b is disposed at a position corresponding to the traction sheave 8 of the hoisting machine 9, and is rotatably supported between the first vertical plate member 16 and the second vertical plate member 17. ing. That is, one end of the rotating shaft of each car-side sheave 20a, 20b is rotatably supported by the first vertical plate member 16, and the other end is rotatably supported by the second vertical plate member 17. In this manner, the car-side sheaves 20 a and 20 b are arranged so that their rotational surfaces are parallel to the width direction of the hoistway 2.

  One of the lower car guides 19a and 19b is disposed on the outer side of the first vertical plate member 16 of the lower beam 13 (on the landing 4 side, below in FIG. 3B). Has been. The other cage lower guide portion 19b is disposed outside the second vertical plate member 17 (on the rear side of the hoistway 2, above in FIG. 3B). These car lower side guide portions 19a and 19b are fixed to the vertical plate members 16 and 17 via the support 21, respectively. In this way, the lower car guides 19a and 19b are arranged corresponding to the guide rails 3a and 3b.

  At both ends of the upper beam 14, a car upper guide part (not shown) for guiding the car body 10 along the car side guide rails 3a and 3b is provided. Further, at both ends of the lower beam 13, safety devices (not shown) for stopping the car 5 by contacting the car-side guide rails 3a and 3b in an emergency are provided.

  Next, the operation of the present embodiment having such a configuration will be described.

  When the car 5 stopped at the landing 4 is moved up and down, first, the hoisting machine 9 rotates the traction sheave 9a in response to a command from a control unit (not shown). As a result, the main rope 6 is wound up, and the driving force of the hoisting machine 9 is transmitted to the car 5 through the car sheaves 20a, 20b attached to the lower beam 13. During this time, the car 5 is guided to the car-side guide rails 3a and 3b by the car lower guide portions 19a and 19b attached to the lower beam 13 and the car lower guide portion (not shown) attached to the upper beam 14. As it is being moved up and down the hoistway 2.

  As described above, according to the present embodiment, the car-side sheaves 20 a and 20 b are provided at both ends of the lower beam 13 that supports the car body 10 of the car 5. Here, when the car-side sheaves 20a and 20b are attached to the upper beam 14 of the car frame 12, it is necessary to increase the strength of the upper beam 14, which increases the mass of the upper beam 14. is there. On the other hand, according to the present invention, the car-side sheaves 20 a and 20 b are attached to the lower beam 13 having a predetermined strength for supporting the car body 10. As a result, the mass of the upper beam 14 can be reduced and the mass of the entire car 5 can be reduced. In this case, the mass of the counterweight 7 can be reduced in order to balance the mass with the car 5. As a result, energy (electric power) for raising and lowering the car 5 can be reduced. Further, since it is not necessary to increase the strength of the upper beam 14, the material cost of the upper beam 14 can be reduced, and the mass of the counterweight 7 is reduced, so that the material cost of the counterweight 7 is reduced. Can be reduced.

  Further, according to the present embodiment, the car-side sheaves 20a and 20b are attached to the lower beam 13 as described above. As a result, a dimension (top clearance) between the car 5 and the ceiling 2a of the hoistway 2 is secured, and a dimension (overhead dimension) between the floor of the uppermost landing 4 and the ceiling 2a of the hoistway 2 is secured. ) Can be reduced. This is a particularly advantageous effect in a machine roomless elevator apparatus in which hoistway equipment such as the hoisting machine 9 is attached to the ceiling 2a of the hoistway 2. As a result, the layout of hoistway equipment and the degree of freedom of roping can be improved.

  Further, according to the present embodiment, as described above, since the car sheaves 20a and 20b are not attached to the upper beam 14, a safety fence such as a handrail attached to the upper surface of the car body 10 (not shown). )), The mass of the safety fence can be reduced, and the manufacturing cost of the safety fence can be reduced. In addition, the operator's work space on the car body 10 can be increased, and the operator's safety can be improved.

  In addition, according to the present embodiment, since the car-side sheaves 20a and 20b are attached to the lower beam 13, the main rope 6 can be attached and inspected from the floor of the hoistway 2. Can be improved.

  Furthermore, according to the present embodiment, one of the lower car guides 19a is disposed outside the first vertical plate member 16 of the lower beam 13, and the lower car lower guide part 19b of the lower beam 13 is disposed. The second vertical plate member 17 is disposed outside. Accordingly, the lower car guides 19a and 19b can be made to correspond to the pair of guide rails 3a and 3b that are arranged to be shifted from each other in the depth direction of the hoistway 2. In this case, the distance between the pair of weight side guide rails 8a and 8b can be increased. Thereby, the degree of freedom of the loading amount of the counterweight 7 can be improved, and an increase in the car mass due to the option can be easily handled.

  In the present embodiment, an example in which the present invention is applied to a machine roomless type elevator apparatus 1 has been described. However, the present invention is not limited to this, and the present invention can also be applied to an elevator apparatus of a type having a machine room as shown in FIG. 2, and the same effect can be obtained. In this case, a machine room is provided above the ceiling 2a of the hoistway 2, and a hoisting machine 9 having a traction sheave 9a is installed in the machine room.

Second Embodiment Next, an elevator apparatus according to a second embodiment of the present invention will be described with reference to FIG.

  In the elevator apparatus according to the second embodiment shown in FIG. 4, each car lower guide portion is arranged between a pair of vertical plate members, and each car sheave is arranged outside one vertical plate member. The main difference is that each car-side sheave is rotatably supported between the one vertical plate member and the bracket, and the other configuration is the first embodiment shown in FIGS. Is almost the same. In FIG. 4, the same parts as those of the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 4, the lower beam 13 includes a first vertical plate member 16 located on the landing 4 side, a second vertical plate member 17 located on the opposite side to the landing 4 side, and the first vertical plate member 16. And a horizontal plate member (not shown) connected to the second vertical plate member 17.

  Each of the car sheaves 20a and 20b is disposed outside the second vertical plate member 17 of the lower beam 13 (at the rear side of the hoistway 2 and above in FIG. 4B).

  A bracket 30 is attached to the second vertical plate member 17. The bracket 30 includes a plate-like body 30a extending in parallel with the second vertical plate member 17 of the lower beam 13, and two adapters 30b for fixing the plate-like body 30a to the second vertical plate member 17 of the lower beam 13. Contains. That is, the plate-like body 30a is disposed so as to be separated from and opposed to the second vertical plate member 17. The car sheaves 20a and 20b are rotatably supported so as to be sandwiched between the second vertical plate member 17 and the plate 30a of the bracket 30. Each adapter 30b is disposed between the car-side sheaves 20a and 20b.

  In this way, the car-side sheaves 20a and 20b are supported rotatably between the second vertical plate member 17 and the bracket 30. That is, one end of the rotation shaft of each car sheave 20 a, 20 b is rotatably supported by the second vertical plate member 17, and the other end is rotatably supported by the plate-like body 30 a of the bracket 30. In this manner, the car-side sheaves 20 a and 20 b are arranged so that their rotational surfaces are parallel to the width direction of the hoistway 2.

  The pair of car-side guide rails 3 a and 3 b are provided in parallel to the width direction of the hoistway 2. Each car lower side guide part 19a, 19b is arrange | positioned between the 1st vertical plate member 16 and the 2nd vertical plate member 17, and is attached to the horizontal plate member. In this way, the lower car guides 19a and 19b are arranged corresponding to the guide rails 3a and 3b.

  Thus, according to the present embodiment, as in the first embodiment, the mass of the upper beam 14 is reduced, and the structure of the safety fence on the car body 10 is simplified to reduce its mass. The mass of the entire car 5 can be reduced, and the energy for raising and lowering the car 5 can be reduced. Further, it is possible to secure the top clearance between the car 5 and the ceiling 2a of the hoistway 2 and reduce the overhead dimension. Furthermore, the manufacturing cost of the safety fence provided on the upper surface of the car body 10 is reduced, the safety of the worker on the car body 10 is improved, and the workability of the main rope 6 installation work and inspection work is improved. Can be improved.

Third Embodiment Next, an elevator apparatus according to a third embodiment of the present invention will be described with reference to FIG.

  In the elevator apparatus according to the third embodiment shown in FIG. 5, the bracket is composed of a pair of bracket divided bodies provided on each car-side sheave, and each bracket divided body supports the corresponding car-side sheave in a cantilever manner. The other differences are mainly the same as those of the second embodiment shown in FIG. In FIG. 5, the same parts as those of the second embodiment shown in FIG.

  As shown in FIG. 5, the bracket 30 includes a pair of bracket divided bodies 31 and 32 provided on the car-side sheaves 20a and 20b. The bracket divided bodies 31 and 32 are divided plate-like bodies 31a and 32a that rotatably support the car sheaves 20a and 20b, and a fixing portion 31b that fixes the divided plate-like bodies 31a and 32a to the second vertical plate member 17, respectively. , 32b. Each fixing part 31b, 32b is arranged inside the car 5 relative to the corresponding car-side sheave 20a, 20b. Thus, each bracket division body 31 and 32 is comprised so that the respective car side sheaves 20a and 20b cantileverly be supported.

  Each of the car sheaves 20a and 20b is rotatably supported between the second vertical plate member 17 and the bracket divided bodies 31 and 32, respectively. That is, one end of the rotating shaft of the car-side sheave 20 a is rotatably supported by the second vertical plate member 17, and the other end is rotatably supported by the divided plate-like body 31 a of the bracket divided body 31. Similarly, one end of the rotating shaft of the car-side sheave 20 b is rotatably supported by the second vertical plate member 17, and the other end is rotatably supported by the divided plate-like body 32 a of the bracket divided body 32. In this manner, the car-side sheaves 20 a and 20 b are arranged so that their rotational surfaces are parallel to the width direction of the hoistway 2.

  Thus, according to the present embodiment, as in the second embodiment, the mass of the upper beam 14 is reduced, and the structure of the safety fence on the car body 10 is simplified to reduce its mass. The mass of the entire car 5 can be reduced, and the energy for raising and lowering the car 5 can be reduced. Further, it is possible to secure the top clearance between the car 5 and the ceiling 2a of the hoistway 2 and reduce the overhead dimension. Furthermore, the manufacturing cost of the safety fence provided on the upper surface of the car body 10 is reduced, the safety of the worker on the car body 10 is improved, and the workability of the main rope 6 installation work and inspection work is improved. Can be improved.

  Moreover, according to this Embodiment, the bracket 30 consists of the bracket division bodies 31 and 32 provided in each car side sheave 20a, 20b. Thereby, the mass of the bracket 30 for attaching the car-side sheaves 20a and 20b can be reduced. For this reason, the mass of the whole car 5 can be further reduced.

Fourth Embodiment Next, an elevator apparatus according to a fourth embodiment of the present invention will be described with reference to FIG.

  The elevator apparatus in the fourth embodiment shown in FIG. 6 is mainly different in that the bracket divided body supports both sides of the corresponding car sheave, and the other configuration is the third embodiment shown in FIG. The form is substantially the same. In FIG. 6, the same parts as those of the third embodiment shown in FIG.

  As shown in FIG. 6, the bracket divided body 31 includes a divided plate-like body 31 a that rotatably supports the car-side sheave 20 a and a pair of fixing portions 31 b that fix the divided plate-like body 31 a to the second vertical plate member 17. , 31c. A corresponding car-side sheave 20a is interposed between the pair of fixing portions 31b and 31c. In this way, the bracket divided body 31 is configured to support both the car-side sheaves 20a.

  Similarly, the bracket divided body 32 includes a divided plate-like body 32a that rotatably supports the car-side sheave 20b, and a pair of fixing portions 32b and 32c that fix the divided plate-like body 32a to the second vertical plate member 17. Have. A corresponding car-side sheave 20b is interposed between the pair of fixing portions 32b and 32c. In this way, the bracket divided body 32 is configured so as to support both sides of the car-side sheave 20b.

  Thus, according to the present embodiment, as in the third embodiment, the mass of the upper beam 14 is reduced, and the structure of the safety fence on the car body 10 is simplified to reduce its mass. The mass of the entire car 5 can be reduced, and the energy for raising and lowering the car 5 can be reduced. Further, it is possible to secure the top clearance between the car 5 and the ceiling 2a of the hoistway 2 and reduce the overhead dimension. Furthermore, the manufacturing cost of the safety fence provided on the upper surface of the car body 10 is reduced, the safety of the worker on the car body 10 is improved, and the workability of the main rope 6 installation work and inspection work is improved. Can be improved.

  Moreover, according to this Embodiment, each bracket division body 31 and 32 is supporting both the cage side sheaves 20a and 20b at both ends. Thus, the car-side sheaves 20a and 20b can be more firmly supported on the lower beam 13.

Fifth Embodiment Next, an elevator apparatus according to a fifth embodiment of the present invention will be described with reference to FIG.

  In the elevator apparatus according to the fifth embodiment shown in FIG. 7, one car-side sheave is disposed outside one vertical plate member, and the other car-side sheave is outside the other vertical plate member. The car sheaves are arranged in the same direction, and the rotation surfaces of the car sheaves are inclined with respect to the width direction of the hoistway and are arranged on the same straight line. Other configurations are shown in FIGS. This is substantially the same as the first embodiment. In FIG. 7, the same parts as those of the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7, the lower beam includes a first vertical plate member 16 located on the landing 4 side, a second vertical plate member 17 located on the opposite side to the landing 4 side, the first vertical plate member 16 and the first beam. And a horizontal plate member (not shown) connected between the two vertical plate members 17.

  The car-side sheave 20a is disposed outside the second vertical plate member 17 of the lower beam 13 (the rear side of the hoistway 2 and above in FIG. 7B), and the car-side sheave 20b is disposed on the lower beam 13. The first vertical plate member 16 is disposed outside (the landing 4 side, below in FIG. 7B). These car-side sheaves 20a and 20b are arranged on the same straight line with their rotation surfaces inclined with respect to the width direction of the hoistway 2, and are configured to correspond to the rotation surfaces of the traction sheave 9a.

  A first bracket 41 is attached to the second vertical plate member 17. The first bracket 41 includes a first plate-like body 41a extending in parallel with the rotation surface of the car-side sheave 20a, and one first plate 41a that fixes the first plate-like body 41a to the second vertical plate member 17 of the lower beam 13. 1 fixing part 41b. The car-side sheave 20a is rotatably supported so as to be sandwiched between the second vertical plate member 17 and the first plate-like body 41a of the first bracket 41. In addition, the 1st fixing | fixed part 41b is arrange | positioned inside the passenger car 5 with respect to the car side sheave 20a, and the 1st bracket 41 is comprised so that the car side sheave 20a cantilevered.

  In this way, the car-side sheave 20a is rotatably supported between the second vertical plate member 17 and the first bracket 41. That is, one end of the rotating shaft of the car-side sheave 20 a is rotatably supported by the second vertical plate member 17, and the other end is rotatably supported by the first plate-like body 41 a of the first bracket 41.

  Similarly, a second bracket 42 is attached to the first vertical plate member 16. The second bracket 42 includes a second plate-like body 42a extending in parallel with the rotating surface of the car-side sheave 20b, and a first plate for fixing the second plate-like body 42a to the first vertical plate member 16 of the lower beam 13. 2 fixing part 42b. A cage sheave 20b is rotatably supported between the first vertical plate member 16 and the second plate-like body 42a of the second bracket 42. The second fixing portion 42b is disposed inside the car 5 with respect to the car-side sheave 20b, and the second bracket 42 is configured to support the car-side sheave 20b in a cantilever manner.

  In this way, the car-side sheave 20b is rotatably supported between the first vertical plate member 16 and the second bracket 42. That is, one end of the rotating shaft of the car-side sheave 20 b is rotatably supported by the first vertical plate member 16, and the other end is rotatably supported by the second plate-like body 42 a of the second bracket 42.

  The pair of car-side guide rails 3 a and 3 b are provided in parallel to the width direction of the hoistway 2. Each car lower side guide part 19a, 19b is arrange | positioned between the 1st vertical plate member 16 and the 2nd vertical plate member 17, and is attached to the horizontal plate member. In this way, the lower car guides 19a and 19b are arranged corresponding to the guide rails 3a and 3b.

  Thus, according to the present embodiment, as in the first embodiment, the mass of the upper beam 14 is reduced, and the structure of the safety fence on the car body 10 is simplified to reduce its mass. The mass of the entire car 5 can be reduced, and the energy for raising and lowering the car 5 can be reduced. Further, it is possible to secure the top clearance between the car 5 and the ceiling 2a of the hoistway 2 and reduce the overhead dimension. Furthermore, the manufacturing cost of the safety fence provided on the upper surface of the car body 10 is reduced, the safety of the worker on the car body 10 is improved, and the workability of the main rope 6 installation work and inspection work is improved. Can be improved.

  Further, according to the present embodiment, the car-side sheaves 20a and 20b have their rotation surfaces inclined with respect to the width direction of the hoistway 2 and correspond to the rotation surfaces of the traction sheave 9a. Thereby, it is possible to prevent the main rope 6 from being twisted between the traction sheave 9a and the car-side sheaves 20a and 20b. For this reason, damage and deterioration of the main rope 9 can be prevented.

Sixth Embodiment Next, an elevator apparatus according to a sixth embodiment of the present invention will be described with reference to FIG.

  In the elevator apparatus according to the sixth embodiment shown in FIG. 8, the first bracket divided body and the second bracket divided body are mainly different in that they support both sides of the corresponding car-side sheave. This is substantially the same as the fifth embodiment shown in FIG. In FIG. 8, the same parts as those of the fifth embodiment shown in FIG.

  As shown in FIG. 8, the first bracket 41 includes a first plate-like body 41 a that rotatably supports the car-side sheave 20 a and a pair of first plates 41 a that fix the first plate-like body 41 a to the second vertical plate member 17. 1 fixed portions 41b and 41c. A corresponding car sheave 20a is interposed between the pair of first fixing portions 41b and 41c. In this way, the first bracket 41 is configured to support the car sheave 20a at both ends.

  Similarly, the second bracket 42 includes a second plate-like body 42a that rotatably supports the car-side sheave 20b, and a pair of second fixing portions 42b that fix the second plate-like body 42a to the first vertical plate member 16. , 42c. A corresponding car-side sheave 20b is interposed between the pair of second fixing portions 42b and 42c. Thus, the 2nd bracket division body 42 is comprised so that both-end support of the cage | basket | car sheave 20b may be carried out.

  Thus, according to the present embodiment, as in the fifth embodiment, the mass of the upper beam 14 is reduced, and the structure of the safety fence on the car body 10 is simplified to reduce its mass. The mass of the entire car 5 can be reduced, and the energy for raising and lowering the car 5 can be reduced. Further, the top clearance between the car 5 and the ceiling 2a of the hoistway 2 can be increased. Furthermore, the manufacturing cost of the safety fence provided on the upper surface of the car body 10 is reduced, the safety of the worker on the car body 10 is improved, and the workability of the main rope 6 installation work and inspection work is improved. Can be improved.

  Further, according to the present embodiment, the first bracket 41 and the second bracket 42 both support the car-side sheaves 20a and 20b, respectively. Thus, the car-side sheaves 20a and 20b can be more firmly supported on the lower beam 13.

Seventh Embodiment Next, an elevator apparatus according to a seventh embodiment of the present invention will be described with reference to FIG.

  In the elevator apparatus according to the seventh embodiment shown in FIG. 9, the lower beam extends while inclining with respect to the width direction of the hoistway, and car lower side guide portions are provided at both ends thereof, and below the lower beam The main difference is that car sheaves are provided at both ends of the bracket attached to the bracket. Other configurations are substantially the same as those of the first embodiment shown in FIGS. In FIG. 9, the same parts as those of the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 9, the lower beam 13 of the car frame 12 is provided below the car body 10 and extends while being inclined with respect to the width direction of the hoistway 2. The lower beam 13 includes a first vertical plate member 16 positioned on the landing 4 side, a second vertical plate member 17 positioned on the opposite side to the landing 4 side, and the first vertical plate member 16 and the second vertical plate member. 17 and a horizontal plate member (not shown) connected between the two.

  At both ends of the lower beam 13, car lower guide portions 19a and 19b for guiding the car body 10 with respect to the pair of guide rails 3a and 3b are provided. Each car lower side guide part 19a, 19b is arrange | positioned between the 1st vertical board member 16 and the 2nd vertical board member 17 so as to correspond to each guide rail 3a, 3b, and is attached to a horizontal board member. Yes.

  A bracket 50 extending in parallel with the width direction of the hoistway 2 is provided below the lower beam 13. Car-side sheaves 20a and 20b around which the main rope 6 is wound are rotatably provided at both ends of the bracket 50, respectively.

  Thus, according to the present embodiment, as in the first embodiment, the mass of the upper beam 14 is reduced, and the structure of the safety fence on the car body 10 is simplified to reduce its mass. The mass of the entire car 5 can be reduced, and the energy for raising and lowering the car 5 can be reduced. Further, it is possible to secure the top clearance between the car 5 and the ceiling 2a of the hoistway 2 and reduce the overhead dimension. Furthermore, the manufacturing cost of the safety fence provided on the upper surface of the car body 10 is reduced, the safety of the worker on the car body 10 is improved, and the workability of the main rope 6 installation work and inspection work is improved. Can be improved.

  Moreover, according to this Embodiment, each cage | basket | car lower side guide part 19a, 19b is arrange | positioned at the both ends of the lower beam 13 inclined and extended with respect to the width direction of the hoistway 2. As shown in FIG. Accordingly, the lower car guides 19a and 19b can be made to correspond to the pair of guide rails 3a and 3b that are arranged to be shifted from each other in the depth direction of the hoistway 2. In this case, the distance between the pair of weight side guide rails 8a and 8b can be increased. Thereby, the degree of freedom of the loading amount of the counterweight 7 can be improved, and an increase in the car mass due to the option can be easily handled.

DESCRIPTION OF SYMBOLS 1 Elevator apparatus 2 Hoistway 2a Ceiling 2b Machine room 3a, 3b Car side guide rail 4 Platform 4a Platform door 5 Car 6 Main rope 7 Balance weight 7a Weight side sheave 8a, 8b Weight side guide rail 9 Hoisting machine 9a Traction Sheave 10 Car body 11 Car door 12 Car frame 13 Lower beam 14 Upper beam 15 Vertical beam 16 First vertical plate member 17 Second vertical plate member 18 Adapters 19a, 19b Car lower guide portions 20a, 20b Car side sheave 21 Installation Member 30 Bracket 30a Plate-like member 30b Adapter 31, 32 Bracket divided body 31a, 32a Split plate-like body 31b, 31c, 32b, 32c Fixing part 41 First bracket 41a First plate-like body 41b, 41c First fixing part 42 First 2 bracket 42a 2nd plate-like body 42b, 42c fixed part 50 bracket 100 elevator apparatus 1 01 Car 102 Car body 103 Car frame 104 Upper beam 105 Sheave support beam 106 Main rope 107 Car side sheave

Claims (13)

Guided by a pair of guide rails provided in the elevator hoistway, the car can freely move up and down in the hoistway,
A counterweight connected to the car via a connecting member;
A drive unit for driving the car via the connecting member,
The car has a car body and a car frame including a lower beam that supports the car body,
The lower beam is provided below the car body and extends in parallel to the width direction of the hoistway,
At both ends of the lower beam, a car lower guide portion for guiding the car body with respect to the pair of guide rails is provided, and a car sheave around which the connecting member is wound is provided rotatably. The elevator apparatus characterized by the above-mentioned. The lower beam has a pair of vertical plate members,
Each of the cage sheaves is rotatably supported between the pair of vertical plate members,
One of the car lower guide portions is disposed outside the one vertical plate member, and the other car lower guide portion is disposed outside the other vertical plate member. The elevator apparatus of Claim 1 characterized by the above-mentioned. The lower beam has a pair of vertical plate members,
Each of the cage lower guide portions is disposed between the pair of vertical plate members,
Each of the cage sheaves is disposed outside one of the vertical plate members,
The elevator according to claim 1, wherein a bracket is attached to the one vertical plate member, and each of the car sheaves is rotatably supported between the one vertical plate member and the bracket. apparatus.   The elevator apparatus according to claim 3, wherein the bracket includes a pair of bracket divided bodies provided on the car sheaves.   The elevator apparatus according to claim 4, wherein each of the bracket divided bodies cantilever-supports a corresponding car-side sheave.   The elevator apparatus according to claim 4, wherein each bracket divided body supports both the corresponding car-side sheaves. The lower beam has a pair of vertical plate members,
Each of the cage lower guide portions is disposed between the pair of vertical plate members,
One of the car-side sheaves is disposed outside the one of the vertical plate members, and the other of the car-side sheaves is disposed outside of the other of the vertical plate members. Are arranged on the same straight line inclined with respect to the width direction of the hoistway,
A first bracket is attached to the one vertical plate member, and the one car-side sheave is rotatably supported between the one vertical plate member and the first bracket,
The second bracket is attached to the other vertical plate member, and the other car-side sheave is rotatably supported between the other vertical plate member and the second bracket. The elevator apparatus according to 1.   The elevator apparatus according to claim 7, wherein the first bracket cantilever-supports the one car-side sheave and the second bracket cantilever-supports the other car-side sheave.   The elevator apparatus according to claim 7, wherein the first bracket supports both the one car-side sheaves and the second bracket supports both the other car-side sheaves. A car that is guided by a pair of guide rails provided in the elevator hoistway and can be moved up and down in the hoistway.
A counterweight connected to the car via a connecting member;
A drive unit for driving the car via the connecting member,
The car has a car body and a car frame including a lower beam that supports the car body,
The lower beam is provided below the car body and extends with an inclination with respect to the width direction of the hoistway,
Car lower side guide portions for guiding the car body with respect to the pair of guide rails are provided at both ends of the lower beam, respectively.
A bracket extending in parallel with the width direction of the hoistway is provided below the lower beam,
An elevator apparatus, wherein a car sheave around which the connecting member is wound is rotatably provided at both ends of the bracket.   The elevator apparatus according to any one of claims 1 to 10, wherein the connecting member includes a plurality of ropes.   The elevator apparatus according to any one of claims 1 to 10, wherein the connecting member is formed of a flat belt having a rectangular cross section.   The elevator apparatus according to any one of claims 1 to 10, wherein the connecting member is made of a steel belt.

Images