JP3599046B2 - Machine room-less elevator equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a machine room-less elevator device.
[0002]
[Prior art]
In recent years, there is no need to provide a machine room on the roof because a hoist is not required for a conventional hoist-type elevator (no machine room), and a machine room-less elevator device that can effectively utilize the height of a building, for example, Japanese Patent Application Laid-Open Nos. 57-121568 and 4-55278 have been proposed.
FIG. 13 is an explanatory view showing the entire conventional machine room-less elevator apparatus. FIG. 13A is a plan view of a conventional machine room-less elevator device as viewed from above a hoistway, FIG. 13B is a side view of the elevator device, and FIG. 13C is fishing of the elevator device. It is a front view of a joint weight. FIG. 14A is a plan view of a machine room-less elevator device disclosed in Japanese Patent Application Laid-Open No. 4-55278, and FIG. 14B is a side view of the elevator device. FIG. 15A is a plan view of a machine room-less elevator apparatus to which the concept of the elevator apparatus disclosed in Japanese Patent Application Laid-Open No. 57-121568 is applied, and FIG. 15B is a side view of the elevator apparatus. FIG. 16 is a front view of the counterweight of the elevator apparatus of FIGS. 14 and 15. In the drawing, 1 is a car, 2 is a counterweight, and the counterweight 2 is provided with an armature 3 of a linear motor. The armature 3 of the linear motor engages with the secondary conductor 4 to generate a thrust to move the counterweight 2 up and down. The armature 3 of the linear motor is disposed so as to face both surfaces of the secondary conductor 4 of the linear motor, and this type of linear motor is referred to as a double-sided linear motor. Since the car 1 and the counterweight 2 are connected at both ends of the rope 7 via the lifting wheels 5 and 6, the car 1 moves up and down as the counterweight 2 moves up and down. Reference numeral 8 denotes a hoistway wall, and a counterweight rail 10 and a car rail 11 are fixed to the hoistway wall 8. 9 is the ceiling of the hoistway, and 100 is the entrance of the car.
[0003]
In the machine room-less elevator device shown in FIG. 15, the rope 7 is fixed to a rope fixing plate 101 provided at the bottom of the car 1 so as to face the counterweight 2, and the surface side of the car 1 facing the counterweight 2. This is an example in which a car 1 and a counterweight 2 are connected at both ends of a rope 7 via a suspension wheel 5 installed above the hoistway.
[0004]
Next, the operation will be described. When a three-phase alternating current is applied to the armature 3 of the linear motor, a linear magnetic field is generated, and an eddy current is generated in the secondary conductor 4 engaged with the armature 3 of the linear motor, thereby generating a thrust. With this thrust, the counterweight 2 moves up and down, and the car 1 fixed to the rope 7 via the counterweight 2 and the lifting wheels 5 and 6 also moves up and down.
[0005]
Since the machine room-less elevator device described above can be moved up and down by the linear motor incorporated in the counterweight 2, it is not necessary to install a hoist on the hoistway as in a conventional hoist-type elevator device. Therefore, there is no need to provide a machine room on the roof of the building, and there is an advantage that the floor can be used effectively when the height of the building is limited.
[0006]
[Problems to be solved by the invention]
Since the conventional machine room-less elevator apparatus is configured as described above, it has the following problems.
The space between the car 1 and the hoistway ceiling 9 is such that if the car goes too high during maintenance or installation, the car will not hit the head with the building ceiling or obstacles. Must be secured. This dimension is referred to as a top clearance safety dimension TC0. The top clearance dimension TC2, which is the space between the ceiling of the car 1 and the ceiling 9 of the hoistway, is a useless space for the building, and is therefore desired to be as small as possible.
In the configuration of the machine room-less elevator device shown in FIG. 14, since the hoisting wheels 5 and 6 are located on the car 1, the dimension TC1 from the ceiling of the car 1 to the hoisting wheel 5 is the top clearance safety dimension. That is, since TC1 = TC0, the ceiling 9 of the hoistway is located further above the suspension vehicle 5, so that the useless space is increased by the difference between TC1 and TC2. In addition, this method generally requires two hanging wheels, which increases the cost.
[0007]
The configuration of the machine room-less elevator device shown in FIG. 15 reduces unnecessary space in the top clearance. That is, instead of suspending the car 1 at the center of the upper part of the car, a rope fixing plate is provided at the lower part of the side of the car 1 facing the counterweight 2 and is suspended from here. By doing so, the hanging wheel 5 can be installed outside the projection plane of the car 1, so that a person on the car does not hit the head of the hanging wheel 5 and TC1 can be reduced. The top clearance dimension at this time is TC2. That is, since TC0 = TC2, the ceiling 9 of the hoistway can be lowered to TC1 shown in FIG. In addition, there is only one hanging wheel, which is advantageous in cost. However, there are the following problems.
[0008]
When the A1 size shown in FIG. 14B is compared with the A2 size shown in FIG. 15B, the A2 size is substantially increased by the diameter D of the hanging wheel 5. Since the ratio D / d of the diameter D of the hanging wheel 5 to the diameter d of the rope is determined from the viewpoint of the life of the rope, the diameter of the hanging wheel 5 cannot be reduced to a predetermined value or more. Therefore, since the actual dimensions are A1 <A2, the hoistway dimension A0 shown in FIG. 14A is increased, and the effective use area in the building is reduced.
[0009]
In addition, from the viewpoint of reducing the top clearance dimension and making effective use of the height of the building, the machine room-less elevator device takes safety measures during the installation and maintenance of the elevator device, so that the top clearance safety dimension TC0 itself is used. It is required to reduce the top clearance dimension to the limit by reducing the distance.
[0010]
The present invention has been made in order to solve the above-mentioned problems. The height of the building is effectively used by reducing the top clearance dimension TC2, and the top clearance safety dimension TC0 is not more than the reference value. It is another object of the present invention to provide an inexpensive machine room-less elevator device that can be operated safely even after that.
[0011]
[Means for Solving the Problems]
A machine room-less elevator apparatus according to the present invention includes a car that lifts and lowers in a hoistway and a counterweight, a counterweight rail that is installed in the hoistway and guides the counterweight, and A car rail that is installed and guides the car, a rope that suspends the car and the counterweight, and a part of a rope that is provided in the hoistway and runs from the car to the counterweight is wound around the car. And two suspension wheels are provided, and a plane of rotation of the two suspension wheels is arranged substantially parallel to a wall adjacent to the hoistway in a plane cross section of the hoistway, and at least one of the two suspension wheels is provided. Some are arranged at a position lower than the ceiling of the car when the car reaches the top floor.
[0012]
Further, the two suspension wheels are arranged so that their rotating surfaces are parallel to the center line of the counterweight rail.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Reference Example 1.
Hereinafter, one embodiment of the present invention will be described with reference to the drawings. 1 (a) is a plan view of the machine room less elevator apparatus according to an Example of the present invention. FIG. 1B is a side view of FIG. In the figure, the same reference numerals as those in FIG. 13 indicate the same or corresponding parts. In the figure, reference numeral 101 denotes a rope fixing plate attached to the lower part of the car 1, and one end of the rope 7 is fixed to the rope fixing plate 101. The other end of the rope 7 is fixed to the counterweight 2 via the hanging wheel 5. The armature 3 of the linear motor mounted on the counterweight 2 is installed only on one side of the counterweight as shown in the figure. With this configuration, the hoisting wheel 5 is installed on the counterweight 2 side outside the car 1 above the hoistway 8, and the end of the counterweight 2 on which the armature 3 of the linear motor is not mounted. The rope 7 can be fixed to the top of the car, so that the hanging wheel 5 can be installed with a large angle θ with respect to the center line L1 connecting the car 1 and the counterweight 2. With this configuration, the A3 dimension can be reduced from the A2 dimension in FIG. Reference numeral 10 denotes a counterweight rail. Further, since the hanging car 5 is installed on the upper side of the hoistway 8 on the outside of the counterweight 2 side of the car 1, even if a person works on the ceiling of the car 1, the head hits the hanging car 5. Since the top safety gap TC0 can be set to be equal to the top safety gap TC2, the height of the building can be effectively utilized. Here, the case where the armature 3 of the linear motor is installed on one side of the counterweight 2 has been described, but the case where the armature 3 of the linear motor shown in FIG. Although the angle θ cannot be made large, the A3 dimension can be made smaller than the A2 dimension by taking the angle θ within a space-permissible range.
[0014]
Embodiment 1 FIG.
2 and 3 are explanatory diagrams showing an embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 16 indicate the same or corresponding parts. In the figure, reference numeral 101 denotes a rope fixing plate attached to a lower portion of the car 1, and one end of each of a pair of ropes 7 is fixed to the pair of rope fixing plates 101. The other end of each of the pair of ropes 7 is fixed to each of the rope fixing portions 102 of the counterweight 2 via the hanging wheels 25 and 26. The rope fixing plate 101 and the rope fixing portion 102 are attached so as not to interfere with each other during the ascent and descent. The hoisting wheels 25 and 26 are mounted at a position lower than the ceiling 9 of the hoistway in parallel with the center line of the rail 10 by the mounting member 27, and the car 1 reaches the top floor at a portion where the car 1 does not hit the hoistway. At times, it is installed at the same or lower part as the ceiling of the car 1. FIG. 3 shows a state in which the car 1 reaches the top floor in this embodiment. 19 is a door on the building side of the top floor, and 20 is a passenger in the car 1. In this case, when the car 1 is on the top floor, the hanging wheels 25 and 26 are located lower than the ceiling of the car 1, so that the top clearance TC2 can be minimized, and the height of the building is effectively reduced to the maximum. Can be used for
[0015]
Embodiment 2 FIG.
Figure 4 shows another embodiment of how the mounting of the counterweight 2 in the armature 3 of the linear motor to be mounted on the counterweight 2 in the first embodiment. In the drawing, an armature 3 of a linear motor mounted at the center of the counterweight 2 is mounted vertically on the opposing surfaces of the car 1 and the counterweight 2, and the secondary conductor 4 is also connected to the armature 3 of the linear motor. They are arranged in the same direction so as to engage. As in the second embodiment, one end of each of the pair of ropes 7 is fixed to the pair of rope fixing plates 101, and the other end of each of the pair of ropes 7 is counterweighted via the suspension wheels 25 and 26. 2 is fixed to each of the rope fixing portions 102. Further, the rope fixing plate 101 and the rope fixing portion 102 are attached so as not to interfere with each other during the ascent and descent, and the state of the hanging wheels 25, 26 and the car 1 when the car 1 reaches the landing on the top floor is shown in FIG. Is the same as In this embodiment, the armature 3 of the linear motor mounted at the center of the counterweight 2 is mounted vertically on the opposing surfaces of the car 1 and the counterweight 2, so that the thickness D of the counterweight 2 is reduced. It can be smaller than the counterweight shown in FIG.
[0016]
Reference example 2.
In the machine room-less elevator apparatus of the present invention, as shown in FIGS. 1 to 4, the car 1 is suspended by the rope 7 to which the rope fixing plate 101 provided on the bottom of one side of the car 1 is fixed. 1 is applied with a moment F1 shown in FIG. For this reason, since the car 1 is guided by the rollers 30A, 30B, 30C, and 30D so as to move up and down along the car rail 11, a moment F1 is applied between the car rail 11 and the roller 30B to generate a vertical sound. This causes problems such as generation of the roller and accelerated wear of the roller. FIG. 5 shows a reference example of this measure.
In the figure, the rope 31 is engaged with a spring 33 fixed to the upper portion on the opposite side of the car 1 on which the rope fixing plate 101 is provided and fixed to the counterweight 2 via the suspension wheel 31. Since the spring 33 applies a constant tension to the rope 31, the rope 31 generates a moment F2 in the direction of canceling the moment F1, weakens the force applied between the car rail 11 and the roller 30B, and raises and lowers the sound of the roller. Reduce wear.
[0017]
Reference example 3.
This reference example shows another example of measures against the above-described moment F1. FIG. 6 is a plan view of the relationship between the conventional car rail 11 and the roller rail attached to the car 1 as viewed from above the car 1. In the drawing, 37, 38, 39, and 40 are attached to the car 1 via springs, and rollers which engage with the rails 11 to support the X-axis direction of the car 1; And a roller that is engaged with the rail 11 and supports the car 1 in the Y-axis direction. Since the car 1 is suspended by the rope 7 by the rope fixing plate 101, the above-described moment F1 / 2 of the moment acts between the car rail 11 and each of the rollers 37 and 39. FIG. 7 is a plan view of the relationship between the car rail 11 of the present invention and the rollers and rails attached to the car 1 as viewed from above the car 1. In the figure, reference numerals 43 and 44 denote electromagnets to which the car 1 is attached so as to face the car rail 11 and generate a force F3 / 2 in a direction opposite to the above-mentioned moment F1 / 2. FIG. 8 is a side view of FIG. 7, in which the electromagnet 43 is attached to the upper part of the car 1 so that the force F3 acts efficiently on the moment F1. Since the force F3 of the electromagnets 43 and 44 acts in a direction to cancel the moment F1, the force applied between the car rail 11 and the rollers 37 and 39 is weakened, and the vertical noise and the wear of the rollers are suppressed.
[0018]
Reference example 4.
In the machine room-less elevator device having the configuration shown in Reference Example 1, Embodiments 1 and 2, the members such as the hanging wheels 5, 25, and 26 do not interfere with the car 1 that is moving up and down. It is possible to ascend to just below the ceiling 9 of the road. However, while the height of the building can be used effectively, the safety dimension TC0 at the top is reduced, so that it is necessary to work safely during installation and maintenance. In the reference example of the machine room-less elevator apparatus of the present invention, as a countermeasure for reducing the top safety dimension TC0, an operator can perform an inspection work safely without getting on the car 1.
FIG. 9 is a side view of the machine room-less elevator apparatus of the present invention, showing a state where the elevator apparatus is stopped at the top floor. In the figure, reference numeral 21 denotes an inspection opening provided in the car 1, which is closed by a locked door during normal operation. At the time of the inspection work, the door is opened and the suspension wheels 25 and 26 are inspected from the inspection opening 21A. A brake device (not shown) for stopping the elevation of the car 1 is engaged near the suspension wheels 25 and 26. In this case, the brake device can be checked. Also, by lowering the position of the car 1 and stopping it at the same height as the counterweight 2, it is also possible to inspect the armature 3 of the linear motor disposed on the counterweight 2, the brake device 13, and the like.
[0019]
FIG. 10 is a side view showing another reference example of the machine room-less elevator apparatus of the present invention, and shows a state where the elevator apparatus is stopped on the top floor. In the figure, reference numeral 21A denotes an inspection opening provided on the building side of the hoistway wall facing the counterweight 2. The inspection opening 21A is closed by a locked door during normal operation, and during inspection work, the worker 20B opens the door and pulls the hanging wheels 25, 26 and the attached devices of the hanging wheels 25, 26 from the inspection opening 21A. Can be checked.
[0020]
Reference example 5.
Reference Example 5 describes an example of the inspection work performed without riding on the upper part of the car 1, but it may be necessary to get on the upper part of the car 1 depending on the work content. In this case, since the top safety dimension TC0 when the car 1 is on the top floor is reduced, there is a risk that the worker working on the car 1 may hit the head on the ceiling of the hoistway. Danger prevention measures are required. In the reference example of the machine room-less elevator apparatus of the present invention, as a countermeasure for reducing the top safety dimension TC0, an operator working on the car 1 can perform an inspection work safely. FIG. 11 is a side view of the machine room-less elevator apparatus of the present invention, showing a state where an operator is inspecting equipment provided on the top floor. In the figure, reference numeral 57 denotes a light emitting device of a human body detection sensor that detects an operator who is working above the car 1, and is constituted by a light receiving device 51 that receives light from the light emitting device 50 and outputs a signal. When the worker is working on the car 1, the light emitted from the light emitting device 50 is blocked by the worker, and the light receiving device 51 stops the output signal to the control device of the linear motor driving device (not shown). Controls the elevation of the car 1 so that the car 1 secures a predetermined top safety dimension TC0, or performs control such that the car 1 can be operated only at a maintenance speed equal to or lower than a predetermined speed.
[0021]
An inspection stopper 52 is provided at the bottom of the hoistway so as to be detachable. The inspection stopper 52 is erected at the bottom of the hoistway during maintenance, and engages with the lower portion of the counterweight 2 to prevent the car 1 from rising to a position below the predetermined top safety dimension TC0.
With this configuration, the predetermined top safety dimension TC0 is secured by the human body detection sensor 57 or the inspection stopper 52, so that the worker can safely work on the upper part of the car 1.
[0022]
Reference example 6.
FIG. 12 is an explanatory view of a machine room-less elevator apparatus showing another reference example of safety measures for inspection work near the top floor. In the drawing, 53 is stored in a space FG where the car 1 and the counterweight 2 are opposed to each other during normal operation, and is used by closing the elevator of the car 1 and dropping it to a position EF substantially coincident with the top floor during inspection. Is an inspection scaffold supported at the F section in the hoistway as described above. The inspection scaffold 53 has its tip tied to a wire 54, and the wire 54 is tied to a hand-wound handle 55 via a roller 56 so that it can be operated from the building side. When it is turned to the EF position and turned in the opposite direction, it returns from the EF position to the FG position. Further, by providing a sensor (not shown) for detecting that the inspection scaffold 53 is not at the fixed position FG, it is possible to prevent the car 1 from running away to the inspection scaffold 53 due to an erroneous operation of the elevator apparatus.
With such a configuration, when the inspection scaffold 53 is at the EF position, the operator 20C can move from the building side door 19 onto the inspection scaffold 53 and work safely.
[0023]
【The invention's effect】
In the machine room-less elevator device according to the present invention, the planes of rotation of the two suspension wheels are arranged substantially parallel to a wall adjacent to the shaft on a plane section of the shaft, and at least a part of the two suspension wheels is Since the car is disposed at a position lower than the ceiling of the car when the car reaches the top floor, it is possible to reduce the top clearance dimension and the hoistway cross-sectional area.
[0024]
In addition, since the two suspension wheels have their rotating surfaces arranged parallel to the center line of the counterweight rail, the cross-sectional area of the hoistway can be further reduced.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a machine roomless elevator apparatus provided with a hanging wheel according to a reference example of the present invention at an angle of less than 90 degrees with respect to a center line of a rail.
FIG. 2 is an explanatory view of a machine room-less elevator device provided with a hanging wheel according to an embodiment of the present invention in parallel with a center line of a rail.
FIG. 3 is an explanatory view of a machine room-less elevator device in which a hanging wheel according to an embodiment of the present invention is provided in parallel with a center line of a rail and a car is on a top floor.
FIG. 4 is an explanatory view of a machine room-less elevator apparatus provided with an armature of a linear motor according to an embodiment of the present invention at the center of a counterweight;
FIG. 5 is an explanatory view of a machine room-less elevator apparatus for correcting a moment applied to a roller by a rope according to a reference example of the present invention.
FIG. 6 is a plan view of a conventional machine room-less elevator device showing a relationship between a conventional car rail and rollers provided on the car.
FIG. 7 is a plan view of a machine room-less elevator device for correcting a moment applied to a roller by an electromagnet according to a reference example of the present invention.
FIG. 8 is a side view of FIG. 7;
FIG. 9 is an explanatory view of a machine room-less elevator device having a car provided with an inspection opening according to a reference example of the present invention.
FIG. 10 is an explanatory view of a machine room-less elevator device having an inspection opening provided on a building side of a hoistway according to a reference example of the present invention.
FIG. 11 is an explanatory view of a machine room-less elevator device in which safety measures are taken by a human body detection sensor and an inspection stopper according to a reference example of the present invention.
FIG. 12 is an explanatory view of a machine room-less elevator device provided with an inspection scaffold according to a reference example of the present invention.
FIG. 13 is a configuration diagram of a conventional machine room-less elevator device.
FIG. 14 is an explanatory view of a conventional machine room-less elevator apparatus provided with two hanging wheels.
FIG. 15 is an explanatory view of a conventional machine room-less elevator device provided with one hanging wheel.
FIG. 16 is a front view of the counterweight of FIGS.
[Explanation of symbols]
1 car, 2 counterweight, 3 linear motor armature, 4 linear motor secondary conductor, 5, 6, 25, 26 suspension wheel, 7, 31 rope, 8 hoistway wall, 9 hoistway ceiling, 10 Counterweight rail, 11-car rail, 21, 21A Inspection opening, 42, 43 Electromagnet, 52 Inspection stopper, 53 Inspection scaffold, 57 Human body detection sensor

Claims (2)

A car and a counterweight that go up and down the hoistway,
A rail for a counterweight that is installed in the hoistway and guides the counterweight,
A car rail installed in the hoistway and guiding the car,
A rope suspending the car and the counterweight;
Two hanging wheels are provided in the hoistway and around which a part of a rope from the car to the counterweight is wound.
Along with disposing the rotating surfaces of the two suspension wheels in a plane cross section of the hoistway substantially parallel to a wall adjacent to the hoistway,
A machine room-less elevator device, wherein at least a part of the two hanging wheels is disposed at a position lower than a ceiling of the car when the car reaches a top floor. The machine room-less elevator device according to claim 1, wherein the two suspension wheels have rotating surfaces arranged in parallel to a center line of the counterweight rail.

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