JP3438697B2 - Machine room-less elevator equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine room less elevator apparatus.

[0002]

2. Description of the Related Art In recent years, there is no need for a hoisting machine as compared with conventional hoisting type elevators, so there is no need to provide a machine room on the roof (machine roomless), and a machine roomless elevator that can effectively utilize the height of the building Apparatus, for example JP-A-57-1215
No. 68 and JP-A-4-55278 have been proposed. FIG. 13 is an explanatory view showing the entire conventional machine room-less elevator device. FIG. 13 (a) is a plan view of a conventional machine room-less elevator device seen from the upper part of a hoistway, FIG. 13 (b) is a side view of the elevator device, and FIG. 13 (c) is a fishing diagram of the elevator device. It is a front view of a combined weight. FIG. 14A is a plan view of a machine room-less elevator device disclosed in Japanese Patent Laid-Open No. 4-55278.
(B) is a side view of the said elevator apparatus. Figure 15
FIG. 15A is a plan view of a machine room-less elevator apparatus to which the concept of the elevator apparatus shown in JP-A-57-121568 is applied, and FIG. 15B is a side view of the elevator apparatus. FIG. 16 is a front view of a counterweight of the elevator apparatus of FIGS. 14 and 15. In the figure, 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 is the secondary conductor 4
The balance weight 2 is lifted up and down by engaging with. The armature 3 of the linear motor is arranged so as to face both sides of the secondary conductor 4 of the linear motor, and this linear motor system is called a double-sided linear motor. Since the car 1 and the counterweight 2 are connected at both ends of the rope 7 via the hoisting wheels 5 and 6, the car 1 moves up and down as the counterweight 2 moves up and down.
8 is 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 doorway of the car.

In a machine room-less elevator apparatus shown in FIG. 15, a rope 7 is fixed to a rope fixing plate 101 provided at the bottom of a car 1 so as to face the counterweight 2, and the elevator 1 is opposed to the counterweight 2 of the car 1. In this example, the car 1 and the counterweight 2 are connected to each other at both ends of the rope 7 via a suspension vehicle 5 installed on the upper part of the hoistway on the side of the plane.

Next, the operation will be described. When a three-phase alternating current is passed through the armature 3 of the linear motor, a straight magnetic field is generated, and an eddy current is generated in the secondary conductor 4 that engages with the armature 3 of the linear motor to generate thrust. The thrust causes the counterweight 2 to move up and down, and the car 1 fixed to the rope 7 via the counterweight 2 and the suspension wheels 5 and 6 also moves up and down.

Since the above-mentioned machine room-less elevator device can be lifted and lowered by the linear motor incorporated in the counterweight 2, it is not necessary to install a hoist on the hoistway unlike the conventional hoist type elevator device. Becomes Therefore, there is no need to install a machine room on the roof of the building,
There is an advantage that the floor can be effectively used when the height of the building is limited.

[0006]

Since the conventional machine-room-less elevator device is constructed as described above, it has the following problems. The space between the car 1 and the ceiling 9 of the hoistway is a space that does not hit the head with the building ceiling or obstacles even if the car goes up too much when riding on the car during maintenance and installation. Must be secured. This dimension is called the 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,
Since it is a wasteful space for a building, it is desired to be as small as possible. In the configuration of the machine-room-less elevator apparatus shown in FIG. 14, since the suspension cars 5 and 6 are located above the car 1, the dimension TC1 from the ceiling of the car 1 to the suspension car 5 is the top clearance safety dimension. That is, since TC1 = TC0, the ceiling 9 of the hoistway is located further above the hoisting vehicle 5, so that a wasteful space is increased by the difference between TC1 and TC2. In addition, this method generally requires two suspension wheels, resulting in high cost.

The construction of the machine-room-less elevator device shown in FIG. 15 reduces the wasted space in the top clearance. That is, it is a system in which a rope fixing plate is provided below the side surface of the car 1 facing the counterweight 2 without suspending the car 1 at the center of the upper part of the car. By doing so, the suspension vehicle 5 can be installed outside the projection plane of the car 1,
The person on the car no longer hits the suspension car 5 with the TC
1 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. Also, since there is only one suspension vehicle, there is an advantage in terms of cost. However, there are the following problems.

A1 size shown in FIG. 14B and FIG.
Comparing the A2 size shown in (b), the A2 size is increased by almost the diameter D of the suspension vehicle 5. The diameter D of this suspension vehicle 5 is
Since the ratio D / d of the rope diameter d is determined from the viewpoint of the life of the rope and the like, the diameter of the suspension vehicle 5 cannot be made smaller than a predetermined value. Therefore, since the actual dimension is A1 <A2, the hoistway dimension A0 shown in FIG. 14 (a) becomes large, and the effective use area in the building decreases, which is a problem.

In addition, in the machine room-less elevator apparatus, from the viewpoint of reducing the size of the top clearance and effectively using the height of the building, a safety measure is provided during installation and maintenance of the elevator to ensure the safety of the top clearance. It is required to reduce the size TC0 itself to reduce the size of the top clearance to the limit.

The present invention has been made in order to solve the above problems. The height clearance of the building is effectively used by reducing the top clearance dimension TC2, and the top clearance safety dimension TC0 is a standard. You can work safely even if it is below the value,
Furthermore, it aims at providing an inexpensive machine room-less elevator apparatus.

[0011]

A machine room-less elevator apparatus according to the present invention comprises a car and a counterweight that ascends and descends in a hoistway, and a counterweight that is installed in the hoistway and guides the counterweight. Rail, a car rail that is installed in the hoistway and guides the car, a rope that hangs the car, and a rope that suspends the top of the counterweight at one place, and is provided in the hoistway. And a winding means around which a part of the rope extending from the car to the counterweight is wound, and the rotation surface of the winding means is arranged so as to be inclined with respect to the hoistway wall. .

Further, the machine-roomless elevator apparatus according to the present invention comprises a car and a counterweight for moving up and down in the hoistway, and a counterweight rail installed in the hoistway for guiding the counterweight. Installed in the hoistway,
A car rail for guiding the car, a rope for hanging the car and the counterweight, and provided in the hoistway,
And a hanging means around which a part of the rope between the car and the counterweight is wound. The car and the counterweight are hung by one rope, and the rotation surface of the hoisting means is raised and lowered. It is arranged so as to be inclined with respect to the road wall.

Further, the machine-roomless elevator apparatus according to the present invention comprises a car and a counterweight for moving up and down in the hoistway, and a counterweight rail installed in the hoistway for guiding the counterweight. Installed in the hoistway,
A car rail for guiding the car, a rope for suspending the car and a rope for hanging the counterweight on a line connecting the center of the car and the center of the counterweight, and provided in the hoistway, and from the car And a winding means around which a part of the rope leading to the counterweight is wound. The rotation surface of the winding means is arranged to be inclined with respect to the hoistway wall.

Further, the winding means is arranged separately from the cage in a plan view.

Further, the winding means is arranged above the hoistway and is arranged so as to overlap with the counterweight in a plan view.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1A is a plan view of a machine room-less elevator device according to an embodiment 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 portions. In the figure, 101 is a rope fixing plate attached to the bottom of the car 1, and one end of the rope 7 is fixed to the rope fixing plate 101. Rope 7 through suspension car 5
Fix the other end of the to the counterweight 2. 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 suspension vehicle 5 is installed on the counterweight 2 side outside the upper car 1 of the hoistway 8, and on the end side of the counterweight 2 on which the armature 3 of the linear motor is not mounted. Since the rope 7 can be fixed to the top portion of the, the suspension vehicle 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 size can be made smaller than the A2 size in FIG. 15B. Reference numeral 10 is a rail for a counterweight. In addition, the suspension vehicle 5 is a counterweight 2 for the car 1 above the hoistway 8.
Since it is installed on the outside of the side, even if a person rides on the ceiling of the basket 1 and works, the head does not hit the suspension vehicle 5,
Since the top safety clearance TC0 can be set to the top clearance TC2, the height dimension of the building can be effectively utilized. Here, the armature 3 of the linear motor is used as a counterweight 2
The case where it was installed on one side of the
When the armature 3 of the linear motor shown in (a) is installed on both sides of the counterweight 2, it is not possible to set a large angle θ, but by setting the angle θ within a space-allowed range, the A3 size can be changed. It can be smaller than the A2 size.

Embodiment 2. 2 and 3 are explanatory views showing another embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 16 indicate the same or corresponding portions. In the figure, 101 is a rope fixing plate attached to the lower portion of the car 1, and one end of each of the pair of ropes 7 is fixed to the pair of rope fixing plates 101. Hanging wheel 25,2
The other end of each of the pair of ropes 7 via 6 is a counterweight 2
Is fixed to each of the rope fixing portions 102. The rope fixing plate 101 and the rope fixing portion 102 are attached so as not to interfere with each other during lifting. Suspension car 25,
26 is a part lower than the ceiling 9 of the hoistway and is mounted parallel to the center line of the rail 10 by a mounting member 27 so that the car 1 does not collide with the hoistway, and when the car 1 reaches the top floor, It is designed to be installed in the same or lower area as the ceiling. FIG. 3 shows a state when the car 1 reaches the top floor in this embodiment, 19 is a door on the top floor of the building, and 20 is a passenger in the car 1. In this case, when the car 1 is on the top floor, the suspension cars 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 can be maximized. Can be used for.

Embodiment 3. FIG. 4 shows another aspect of how the armature 3 of the linear motor mounted on the counterweight 2 according to the second embodiment is mounted on the counterweight 2. In the figure, an armature 3 of a linear motor mounted at the center of a counterweight 2 is mounted vertically on the opposing surfaces of a car 1 and a counterweight 2, and a secondary conductor 4
Are also arranged in the same direction so as to engage with the armature 3 of the linear motor. Similar to 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 balanced through the suspension wheels 25 and 26. It is being fixed to each rope fixing part 102 of No. 2. In addition, the rope fixing plate 101 and the rope fixing portion 102 are attached so as not to interfere with each other during lifting and lowering, and the suspension vehicle 2 when the car 1 reaches the landing on the top floor.
The states of 5, 26 and the car 1 are the same as in FIG. In this embodiment, since the armature 3 of the linear motor mounted in the central portion of the counterweight 2 is mounted vertically on the opposing surfaces of the car 1 and the counterweight 2, the thickness dimension D of the counterweight 2 is It can be smaller than the counterweight shown in FIG.

Embodiment 4. In the machine room less elevator apparatus of the present invention, as shown in FIGS. 1 to 4, the car 1 is hung by the rope 7 fixed to the rope fixing plate 101 provided on the bottom of one side of the car 1. The moment F1 shown in FIG. Therefore, since the car 1 is guided by the rollers 30A, 30B, 30C, 30D so as to move up and down along the car rail 11, the moment F1 is applied between the car rail 11 and the roller 30B, and the ascending / descending sound is generated. There are problems such as generation of the roller and accelerating wear of the roller. FIG. 5 shows an embodiment of this countermeasure. In the figure, the rope 31 is fixed to the upper portion of the car 1 on the opposite side to which the rope fixing plate 101 is provided, and is engaged with a spring 33 fixed to the counterweight 2 via a suspension wheel 31. Since the spring 33 applies a constant tension to the rope 31, the rope 31 generates a moment F2 in a direction of canceling the moment F1 and weakens the force applied between the car rail 11 and the roller 30B to raise and lower the sound and the roller. Controls wear.

Embodiment 5. Further, the present embodiment shows another mode of measures against the above-mentioned moment F1. FIG. 6 is a plan view of the relationship between the conventional car rail 11 and the roller rails attached to the car 1 side as seen from above the car 1. In the figure, 37, 38, 39 and 40 are cages 1 through springs.
And rollers 41, 42 which are attached to the rails 11 and which support the X-axis direction of the car 1 by engaging with the rails 11, 41 and 42 via a spring.
Is a roller that is attached to the rail 11 and supports the Y axis direction of the car 1 by engaging with the rail 11. Cage 1 is a rope fixing plate 101
Since it is suspended by the rope 7, the above-mentioned moment F1 / 2 acts between the car rail 11 and 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 mounted on the car 1 side as seen from above the car 1. In the figure, 43 and 44 are opposed to the car rail 11 and the car 1
Is an electromagnet that is attached to generate a force F3 / 2 in a direction opposite to F1 / 2 of the moment. FIG. 8 is a side view of FIG. 7, in which the electromagnet 43 is attached to the upper portion of the car 1 so that the force F3 effectively acts on the moment F1. Since the force F3 of these electromagnets 43 and 44 acts in the direction to cancel the moment F1, the car rail 1
The force applied between the roller 1 and the rollers 37, 39 is weakened to suppress the raising / lowering noise and wear of the rollers.

Sixth Embodiment In the machine-room-less elevator device configured as described in the first, second, and third embodiments, the members such as the suspension wheels 5, 25, and 26 do not interfere with the car 1 that is moving up and down. You can go up to just below the ceiling 9. However, while the height of the building can be used effectively, the top safety dimension TC0
Therefore, it is necessary to be able to work safely during installation and maintenance. The embodiment of the machine-roomless elevator apparatus of the present invention is designed to enable a worker to safely perform inspection work without riding on the car 1 as a measure for reducing the safety dimension TC0 at the top. FIG. 9 is a side view of the machine-roomless elevator apparatus according to the present invention, showing a state where it is stopped at the top floor. In the figure, reference numeral 21 is an inspection opening provided in the car 1, which is closed by a locked door during normal operation. During the inspection work, the door is opened to inspect the suspension wheels 25 and 26 through the inspection opening 21A. When a brake device (not shown) for stopping the lifting of the car 1 is engaged in the vicinity of the suspension wheels 25 and 26. In this case, the brake system can also be inspected. Further, by lowering the position of the car 1 and stopping it at the same height as the counterweight 2, it is possible to inspect the armature 3 and the brake device 13 of the linear motor arranged on the counterweight 2.

FIG. 10 is a side view showing another embodiment of the machine-roomless elevator apparatus according to the present invention, showing a state where it is stopped at the top floor. In the figure, 21A is 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.
B opens the door and can inspect the suspension wheels 25, 26 and the accessories of the suspension wheels 25, 26 from the inspection opening 21A.

Embodiment 7. Although the sixth embodiment has described the example of the inspection work performed without getting on the upper portion of the car 1, it may be necessary to get on the upper portion of the car 1 depending on the work content. In this case, because the safety dimension TC0 at the top when the car 1 is on the top floor is reduced, there is a risk that a worker working on the car 1 may hit his head on the ceiling of the hoistway. Danger prevention measures are required. The embodiment of the machine-roomless elevator apparatus of the present invention is intended to enable a worker who is working on the car 1 to safely perform an inspection work as a measure for reducing the top safety dimension TC0. FIG. 11 is a side view of the machine-roomless elevator apparatus of the present invention, showing a state in which an operator is inspecting the 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 a worker who is working on the top of the car 1, and is configured 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 emitting device 50
Since the operator interrupts the light emitted by the light receiving device 51, the light receiving device 51 stops the output signal to the control device of the linear motor drive device (not shown). Therefore, the control device controls the car 1 to ensure a predetermined top safety dimension TC0. The elevator 1 is controlled to be lifted or lowered, or the car 1 is operated only at a maintenance speed equal to or lower than a predetermined speed.

Reference numeral 52 is a check stopper which is detachably provided on the bottom of the hoistway. Inspection stopper 5
2 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 where the top safety dimension TC0 is less than or equal to a predetermined value. With this configuration, the human body detection sensor 57 or the inspection stopper 52 ensures a predetermined safety dimension TC0 at the top, so that the operator can safely work on the upper portion of the car 1.

Embodiment 8. FIG. 12 is an explanatory view of a machine room-less elevator apparatus showing another embodiment of safety measures for inspection work near the top floor. In the figure, 53 is stored in the space FG where the car 1 and the counterweight 2 face each other during normal operation, and the car 1 is inspected during inspection.
It is an inspection scaffold pivotally supported by the F part in the hoistway so that it can be used by closing the elevating part of the above and closing it to a position EF which almost coincides with the uppermost floor. The tip of the inspection scaffold 53 is tied to a wire 54, and the wire 54 is tied to a hand-wound handle 55 via a roller 56 so that the hand-wound handle 55 can be operated from the building side. When it falls to the EF position and is 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 in the fixed position FG, the car 1 is inspected by the inspection scaffold 5 due to an erroneous operation of the elevator device.
It is possible to prevent runaway to 3. With this configuration, when the inspection scaffold 53 is at the EF position, the worker 20C can transfer to the inspection scaffold 53 from the building side door 19 and work safely.

[0026]

In the machine-roomless elevator apparatus according to the present invention, the cage and the counterweight can be arranged close to each other by arranging the rotating surface of the winding means so as to be inclined with respect to the hoistway wall. .

Further, since the winding means are arranged apart from each other by the cage in the plan view, the size of the top clearance can be reduced.

Furthermore, since the winding means is arranged at the upper part of the hoistway and is arranged so as to overlap the counterweight in plan view, the hoistway cross-sectional area can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a machine room-less elevator apparatus in which a suspension vehicle according to an embodiment of the present invention is provided with an angle of less than 90 degrees with respect to a center line of a rail.

FIG. 2 is an explanatory diagram of a machine room-less elevator device in which a suspension vehicle according to an embodiment of the present invention is provided 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 suspension vehicle according to an embodiment of the present invention is provided in parallel with a center line of a rail, and a car is on the uppermost floor.

FIG. 4 is an explanatory diagram of a machine room-less elevator device in which an armature of a linear motor according to an embodiment of the present invention is provided at the center of a counterweight.

FIG. 5 is an explanatory diagram of a machine room-less elevator device that corrects a moment applied to a roller by a rope according to an embodiment of the present invention.

FIG. 6 is a plan view of a machine room-less elevator device showing a relationship between a conventional car rail and rollers provided in a car.

FIG. 7 is a plan view of a machine room-less elevator apparatus that corrects a moment applied to a roller by an electromagnet according to an embodiment of the present invention.

FIG. 8 is a side view of FIG. 7.

FIG. 9 is an explanatory diagram of a machine room-less elevator device in which a car has an inspection opening according to the embodiment of the present invention.

FIG. 10 is an explanatory diagram of a machine room-less elevator apparatus in which an inspection opening is provided on the building side of the hoistway according to the embodiment of the present invention.

FIG. 11 is an explanatory diagram of a machine room-less elevator apparatus in which safety measures are taken by the human body detection sensor and the inspection stopper according to the embodiment of the present invention.

FIG. 12 is an explanatory diagram of a machine room-less elevator device provided with an inspection scaffold according to an embodiment of the present invention.

FIG. 13 is a configuration diagram of a conventional machine-roomless elevator apparatus.

FIG. 14 is an explanatory view of a conventional machine-roomless elevator device provided with two suspension wheels.

FIG. 15 is an explanatory view of a conventional machine-room-less elevator device provided with one suspension vehicle.

16 is a front view of the counterweight of FIGS. 14 and 15. FIG.

[Explanation of symbols]

1 basket, 2 counterweight, 3 linear motor armature, 4 linear motor secondary conductor, 5, 6, 25, 26
Suspension vehicle, 7,31 rope, 8 hoistway walls, 9 hoistway ceiling, 10 counterweight rails, 11 car rails, 21 and 21A inspection openings, 42 and 43 electromagnets,
52 inspection stopper, 53 inspection scaffold, 57 human detection sensor

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-89787 (JP, A) JP-A-5-213560 (JP, A) Actual flat 6-20372 (JP, U) Actual flat 5- 37854 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B66B ^7/ 00-11/08

Claims (5)

(57) [Claims] 1. A car and a counterweight that move up and down in a hoistway, a counterweight rail that is installed in the hoistway and guides the counterweight, and a car that is installed in the hoistway. A rail for the car, a rope for suspending the car and suspending the top of the counterweight with a single support, and a rope provided in the hoistway and extending from the car to the counterweight. A machine room-less elevator apparatus, comprising: a winding means, a part of which is wound around, and a rotation surface of the winding means being arranged to be inclined with respect to the hoistway wall. 2. A car and a counterweight that move up and down in a hoistway, a counterweight rail that is installed in the hoistway and guides the counterweight, and a car that is installed in the hoistway. A car rail for guiding the car, a rope for suspending the car and the counterweight, and a winding means provided in the hoistway for winding a part of the rope between the car and the counterweight. An elevator apparatus without a machine room, characterized in that the car and the counterweight are suspended by one rope, and the rotation surface of the winding means is arranged to be inclined with respect to the hoistway wall. 3. A car and a counterweight that move up and down in a hoistway, a counterweight rail that is installed in the hoistway and guides the counterweight, and a car that is installed in the hoistway. And a rope for hanging the car along the line connecting the center of the car and the center of the counterweight for guiding the car, and a rope for suspending the counterweight, provided in the hoistway, A machine room-less elevator device, comprising: a winding means around which a part of a rope leading to a weight is wound, and a rotation surface of the winding means is arranged to be inclined with respect to the hoistway wall. . 4. The winding means is arranged apart from the cage in a plan view.
The machine room-less elevator device according to any one of 1. 5. The winding means is arranged at the upper part of the hoistway and is arranged so as to overlap with the counterweight in a plan view. The machine room-less elevator device described.