JP4404999B2 - Elevator equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator apparatus in which a hoist that raises and lowers a car room and a balance weight is horizontally disposed at the uppermost part of a hoistway and can be raised and lowered along the hoistway.
[0002]
[Prior art]
In general, as shown in FIG. 7, the elevator apparatus has an electric motor 2 and a driving sheave 3 connected in a machine room 1 provided on the floor via a connecting means 4 such as a reduction gear, for example. The rope 5 wound around the drive sheave 3 connects the cab 7 and the balance weight 8 arranged in the hoistway 6, and the drive sheave 3 is rotated by driving the electric motor 2, so that the rope 5 It is comprised so that the cab 7 may be moved by winding up.
[0003]
However, in the configuration in which the machine room 1 is provided independently as described above, since the proportion of the space for the elevator apparatus in the building increases, for example, in Japanese Patent No. 2593288, a thin motor is used as a drive source. In Japanese Patent Application No. 10-305100 filed by the same applicant as this application, a hoisting machine using a thin motor as a drive source is arranged vertically on the side of the uppermost part of the hoistway. Are arranged horizontally at the top of the hoistway, thereby reducing the proportion of the space for the elevator apparatus in the building without the machine room.
[0004]
[Problems to be solved by the invention]
As described above, in order to reduce the ratio of the space for the elevator apparatus in the building, the conventional elevator apparatus has a hoisting machine that uses a thin motor as a drive source arranged vertically on the side of the top of the hoistway or lifted. Since the hoisting machine is generally placed at the top of the road, the maintenance work for these hoisting machines is generally performed while standing on the top of the car room. There was a problem that workability was very bad, such as requiring both hands to tighten and loosen.
[0005]
The present invention has been made to solve the above problems, and an object of the present invention is to provide an elevator apparatus capable of reducing the proportion of space for the elevator apparatus and facilitating maintenance work. .
[0006]
[Means for Solving the Problems]
The elevator apparatus according to claim 1 of the present invention is configured to raise and lower the cab and the balance weight via a rope along a guide rail disposed in the hoistway by a hoisting machine using a motor as a drive source. In the elevator apparatus, the frame body provided with the hoisting machine is arranged at the top of the hoistway, and the hoisting machine unit is formed by integrating the frame body and the turning pulley that guides the rope to the cab and the balance weight. The frame body can be moved up and down along the hoistway .
[0007]
An elevator apparatus according to a second aspect of the present invention is the elevator device according to the first aspect, wherein the motor is a thin motor, and the thin motor is horizontally arranged in the frame.
[0008]
An elevator apparatus according to a third aspect of the present invention is the elevator apparatus according to the first aspect, wherein the frame body is configured to move up and down along at least one of the cab and the guide rail of the balance weight.
[0009]
According to a fourth aspect of the present invention, there is provided an elevator apparatus according to the first aspect, wherein the frame is moved up and down by a screw supported at both ends by a bearing fixed to the wall surface of the hoistway, and a screw mounted on the frame. It is constituted by a driving means constituted by a nut to be screwed and a handle for rotating the screw.
[0010]
An elevator apparatus according to a fifth aspect of the present invention is the elevator apparatus according to the fourth aspect, wherein the steering means of the driving means is operated at the entrance of any floor.
[0011]
An elevator apparatus according to a sixth aspect of the present invention is the elevator apparatus according to the fourth aspect, wherein the handle of the drive means is operated at the upper part of the cab.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing a configuration of an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view showing a configuration of a hoisting machine unit of the elevator apparatus in FIG. 3 is a perspective view schematically showing a state in which the hoisting machine unit in FIG. 2 is lowered and maintenance work is being performed, FIG. 4 shows the configuration of the hoisting unit lowering prevention device, and FIG. FIG. 5B is a cross-sectional view showing a state during non-operation, and FIG. 5 is a front view showing a schematic configuration of a rope locking mechanism.
[0013]
In the figure, 9 is a hoistway, 10 and 11 are car rooms and balance weights arranged in the hoistway 9, and 12 and 13 are arranged along the wall surface of the hoistway 9 to guide the movement of the balance weights 11. A pair of first guide rails 14 and 15 are arranged along the wall surface of the hoistway 9 to guide the movement of the cab 10, and 16 is along each guide rail 12 to 15. A frame body 17 that can be moved up and down, 17 is a thin motor that is horizontally disposed on one upper end side of the frame body 16, and 18 is a driving sheave that is connected to the thin motor 17. The machine 19 is configured.
[0014]
Reference numerals 20 and 21 denote first and second turning pulleys rotatably disposed on the other end side of the frame body 16 through respective shafts 20a and 21a. It is composed. 23 is a balance weight pulley provided at a position corresponding to the first turning pulley above the balance weight 11, and 24 is provided at a position corresponding to the second turning pulley 21 on one side of the lower part of the cab 10. In addition, a first car compartment pulley 25 is a second car compartment pulley provided in a pair with the first car pulley 24 on the other side of the lower part of the car room 10.
[0015]
As shown in FIG. 4, a toggle clamp 26 is arranged opposite to one side of the hoisting machine unit 22, and the stopper 26 b is inserted into the stopper hole 27 formed on the side surface of the frame 16 by the operation of the arm 26 a. The lowering is prevented by fitting and restricting the movement of the hoisting machine unit 22. 28 is supported at both ends by a pair of bearings 29 fixed to the side wall of the hoistway 9, for example, a screw made of a spiral groove or a screw, and 30 is connected to the lower end of the screw 28 to rotate the screw 28. A handle 31 is a nut that is attached at a position corresponding to the screw 28 of the frame body 16 and screwed into the screw 28. The drive means 41 is constituted by these 28 to 31.
[0016]
Reference numeral 32 denotes a worm supported at both ends by bearings 33 and 34 fixed to the side wall of the hoistway 9, and a handle 35 for operating rotational driving is connected to the lower end side. Reference numeral 36 denotes a worm wheel meshed with the worm 32, and reference numeral 37 denotes a winding sheave which is fixedly integrated on the same axis as the worm wheel 36 and supported by the support frame 38, and corresponds to the second cab pulley 25. These ropes 32 to 38 constitute a rope loosening prevention mechanism 39.
[0017]
One end of 40 is bound to the ceiling of the hoistway 9, descends, is wound around the balance weight pulley 23, rises, is wound around the first turning pulley 20, and is pulled in the horizontal direction. It is wound around the wheel 18 and pulled again in the horizontal direction, is wound around the second turning pulley 21 and descends again. Then, after being wound around the first car room pulley 24 and pulled in the horizontal direction, it is wound around the second car room pulley 25 and raised again, and the other end is a winding sheave of the locking mechanism 39. 37 is a rope connected to 37.
[0018]
The elevator apparatus according to the first embodiment of the present invention is configured as described above. When the thin motor 17 is energized, the driving sheave 18 rotates and the cab 10 and the balance weight 11 are opposite to each other via the rope 40. Go up and down in the direction.
For example, when a failure occurs in the thin motor 17 and maintenance work is required, the cab 10 is moved upward, and the emergency stop mounted in the cab 10 is activated, although not explained in the above configuration. To stop at a predetermined position.
[0019]
Then, the operator operates the arm 26a from the upper part of the cab 10 to operate the toggle clamp 26, and removes the stopper 26b from the stopper hole 27 as shown in FIG. Next, by operating the handle 30 of the driving means 41 to rotate the screw 28, the hoisting machine unit 22 is lowered along the guide rails 12 to 15 by the cooperation of the screw 28 and the nut 31. Since the rope 40 is loosened by a length corresponding to the distance by which the hoisting machine unit 22 is lowered by this operation, the worm 32 is rotated by operating the handle 35 of the locking mechanism 39, and the worm 32 and the worm wheel 36. As a result, the rope 40 is wound around the take-up sheave 37 by the length to prevent loosening. Thereafter, as indicated by a broken line in FIG. 3, the worker 42 performs the maintenance work as if working on the work desk.
[0020]
When the maintenance work is completed, the operator 42 operates the handle 30 of the driving means 41 in the reverse direction to rotate the screw 23 in the reverse direction, so that the hoisting machine unit 22 is moved along the guide rails 12 to 15. Raise. Next, the arm 26a is operated to operate the toggle clamp 26, and the fastener 26b is inserted into the stop hole 27 as shown in FIG. Complete all maintenance tasks. Although not shown, the handle 30 of the driving means 41 may be arranged in the vicinity of the entrance to the car room 10 on the uppermost floor, and the handle 30 may be operated from the entrance / exit. Needless to say, the workability is improved as compared with the above.
[0021]
As described above, according to the first embodiment, the hoisting machine unit 22 is configured by horizontally arranging the thin motor 17 and the driving sheave 18 on the upper portion of the frame body 16, and the hoisting machine unit 22 is driven by the driving means 41. The handle 30 is lowered to a predetermined position by operating the handle 30 so that the operator 42 can work on the work desk in the upper part of the cab 10 and can perform maintenance work. It is possible to reduce the proportion of space and to facilitate maintenance work and improve workability.
[0022]
The hoisting machine unit 22 is moved up and down along the existing first and second guide rails 12 to 15 arranged to move the car room 10 and the balance weight 11. There is no need to provide a guide rail for raising and lowering the upper unit 22, and the cost can be reduced. Furthermore, since the hoisting machine unit 22 is moved up and down by operating the handle 30 of the driving means 41, it is easy to set the position where the worker 42 can easily work, and the operation can be performed on any floor, For example, workability can be further improved if it is made possible at the doorway 51 (shown in FIG. 1) on the top floor.
[0023]
Embodiment 2. FIG.
FIG. 6 is a front view showing a schematic configuration of the loosening prevention mechanism of the elevator apparatus according to Embodiment 2 of the present invention.
In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. 43 is a pair of racks provided on both sides of the hoisting machine unit 22 by the support rods 44 so as to project from the wall surface side of the lifting / lowering chamber 9, 45 is a small gear meshed with these racks 43, 46 and 47 are both A winding sheave that is fixedly integrated with the small gear 45 on the same axis and supported by a support frame 48, and is arranged corresponding to the balance weight pulley 23 and the second cab pulley 25, respectively. These ropes 43 to 48 constitute a rope loosening prevention mechanism 49.
[0024]
50, one end is connected to one winding sheave 46, descends, is wound around the balance weight pulley 23, rises, is wound around the first turning pulley 20, and is pulled horizontally. It is wound around the drive sheave 18 and pulled again in the horizontal direction, and is wound around the second turning pulley 21 and descends again. Then, after being wound around the first cab pulley 24 and pulled in the horizontal direction, it is wound around the second cab pulley 25 and ascends again, and the other end is connected to the other take-up sheave 47. It is a rope to be connected.
[0025]
Also in the second embodiment, as in the first embodiment, for example, when a failure occurs in the thin motor 17 and maintenance work is required, the car room 10 is moved upward and is mounted in the car room 10. An emergency stop (not shown) is activated to stop in place. Then, the operator 42 operates the toggle clamp 26 shown in FIG. 4 from the upper part of the cab 10 to disengage the stopper 26b from the stopper hole 27, and then operates the handle 30 of the driving means 41 to operate the hoisting machine. Although the unit 22 is lowered to a predetermined position, both racks 43 are also lowered along with the lowering, and both small gears 45 meshed with both racks 43 are rotated. The two winding sheaves 46 and 47 that are integrally fixed also rotate, and the rope is wound and loosened by a length corresponding to the distance by which the hoisting machine unit 22 is lowered.
[0026]
As described above, according to the second embodiment, the loosening prevention mechanism 49 that operates as the hoisting machine unit 22 descends is used to prevent the loosening. Therefore, compared with the loosening prevention mechanism 39 according to the first embodiment. Since the operation of the handle is unnecessary, the work becomes easy and the workability can be improved.
[0027]
【The invention's effect】
As described above, according to the first aspect of the present invention, the hoisting machine using the motor as the drive source moves the cab and the balance weight up and down via the rope along the guide rail disposed in the hoistway. In an elevator apparatus, a frame provided with a hoisting machine is disposed at the top of the hoistway, and the hoisting machine is integrated with the frame and a turning pulley that guides the rope to the cab and the balance weight. Since the unit is formed and the frame body can be moved up and down along the hoistway , the proportion of the space for the elevator device can be reduced, and maintenance work can be facilitated and workability can be improved. Can be provided.
[0028]
According to claim 3 of the present invention, in claim 1, since the frame body is configured to move up and down along at least one of the cage rail and the guide rail of the balance weight, the workability is improved. Of course, it is possible to provide an elevator apparatus capable of reducing the cost.
[0029]
According to a fourth aspect of the present invention, in the first aspect, the frame body is moved up and down by a screw supported at both ends by a bearing fixed to the wall surface of the hoistway, and screwed to the screw mounted on the frame body. Since it is performed by a driving means composed of a nut that rotates and a handle that rotates the screw, it is possible to easily set the hoisting machine unit to a position where work can be easily performed, and to further improve workability. An elevator apparatus can be provided.
[0030]
According to claim 5 of the present invention, in claim 4 , since the handle operation of the drive means is performed at the entrance of any one of the floors, an elevator apparatus capable of improving workability is provided. can do.
[0031]
According to claim 6 of the present invention, since the handle operation of the driving means is performed at the upper part of the cab in claim 4 , an elevator apparatus capable of improving workability is provided. Can do.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of an elevator apparatus according to Embodiment 1 of the present invention.
FIG. 2 is a perspective view showing a configuration of a hoisting machine unit of the elevator apparatus in FIG.
FIG. 3 is a perspective view schematically showing a state where maintenance work is performed by lowering the hoisting machine unit in FIG. 2;
4A and 4B show a configuration of a lowering prevention device for a hoisting machine unit, in which FIG. 4A is a cross-sectional view showing a state during operation, and FIG. 4B is a cross-sectional view showing a state during non-operation.
FIG. 5 is a front view showing a schematic configuration of a rope loosening prevention mechanism.
FIG. 6 is a front view showing a schematic configuration of a locking mechanism for an elevator apparatus according to Embodiment 2 of the present invention.
FIG. 7 is a schematic view showing a configuration of a conventional elevator apparatus.
[Explanation of symbols]
9 Lift room, 10 cab, 11 Balance weight,
12, 13 1st guide rail, 14, 15 2nd guide rail, 17 Thin motor,
18 drive sheaves, 19 hoisting machines, 20 first turning pulleys, 21 second turning pulleys,
22 hoist unit, 23 balance weight pulley, 24 first cab pulley,
25 pulley for second cab, 26 toggle clamp, 28 screw, 30 handle,
31 nut, 32 worm, 35 handle, 36 worm wheel,
37, 46, 47 Winding sheave, 39, 49 Locking mechanism, 40, 50 rope,
43 racks, 45 small gears.

Claims (6)

In an elevator apparatus in which a car room and a balance weight are lifted and lowered along a guide rail disposed in a hoistway by a hoisting machine using a motor as a drive source, the hoisting machine is provided. Place the frame at the top of the hoistway,
The hoisting machine unit is formed by integrating the frame and the turning pulley that guides the rope to the cab and the balance weight ,
An elevator apparatus characterized in that the frame body can be moved up and down along the hoistway . The elevator apparatus according to claim 1, wherein the motor is a thin motor, and the thin motor is horizontally disposed in the frame.   2. The elevator apparatus according to claim 1, wherein the frame body is configured to move up and down along at least one of a cab and a balance weight guide rail.   The raising and lowering of the frame body is composed of a screw that is supported at both ends by a bearing fixed to the wall surface of the hoistway, a nut that is attached to the frame body and screwed into the screw, and a handle that rotates the screw. The elevator apparatus according to claim 1, wherein the elevator apparatus is configured by driving means. 5. The elevator apparatus according to claim 4, wherein a steering operation of the driving means is performed at an entrance / exit of any floor. 5. The elevator apparatus according to claim 4, wherein a handle of the driving means is operated at an upper portion of the cab.

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