JP2003040555A - Elevator system without machine room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a linear motor drive type elevator system in which the height of a building can be effectively utilized, and in which safety is secured at the time of inspection. SOLUTION: A car 1 is suspended by a rope at a lower part on the facing surface side to a balance weight 2, and suspension shieves 25 and 26 are disposed at an upper part in the elevator shaft on the side of the balance weight 2 to a projected surface of the car 1 to set top gap size of the car small. The suspension shieve is disposed at an angle of less than 90 deg. to a center line of a rail to set elevator shaft size small as a measure to unbalanced load of the car 1. As a safety measure for inspection of the elevator system to reduction of the top gap size, an inspection opening part 21 is provided on the building side of the car 1 and the elevator shaft for enabling inspection without forcing a worker to get on the top of the car 1. As a safety measure for a worker in getting on the top of the car 1, a human body sensor and an inspection stopper are provided.

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 use 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 is a car and a counterweight that moves up and down in a hoistway, and a drive that is provided in the hoistway and moves up and down the car and the counterweight. A device, a rail for a counterweight installed in the hoistway to guide the counterweight, a rail for a car installed in the hoistway to guide the car, the car and the counterweight. A rope for hanging a rope, a winding means provided in the hoistway, around which a rope portion from the car to the counterweight is wound, and a side surface of the car for inspecting equipment installed in the hoistway. It has an inspection port provided.

Further, a brake device for stopping the raising and lowering of the car is arranged in the hoistway, and the brake device can be inspected through the inspection port.

Further, the inspection port is provided on the side of the side wall of the car facing the drive unit.

The machine room less elevator apparatus according to the present invention comprises a car and a counterweight for moving up and down in the hoistway, a drive device provided in the hoistway for raising and lowering the car and the counterweight, and the hoistway. A balance weight rail installed in the guide rail for guiding the counterweight, a car rail for guiding the car installed in the hoistway, a rope for hanging the car and the counterweight, and A winding means provided in the hoistway, around which a rope portion extending from the car to the counterweight is wound, and an inspection port provided in the hoistway wall for inspecting equipment installed in the hoistway. And have.

In addition, the inspection port, in the hoistway wall,
It is provided on the side facing the driving device.

[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. The other end of the rope 7 is fixed to the counterweight 2 via the suspension 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 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. 1
0 is a rail for a counterweight. Further, since the suspension vehicle 5 is installed outside the counterweight 2 side of the car 1 above the hoistway 8, even if a person rides on the ceiling of the car 1 and works, the suspension vehicle 5 hits the head with the suspension vehicle 5. Without the top safety clearance TC
Since 0 = the top clearance TC2 can be set, the height dimension 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 when the armature 3 of the linear motor shown in FIG. 18A is installed on both sides of the counterweight 2. Although the angle θ cannot be made large, the A3 size can be made smaller than the A2 size by setting the angle θ within a space-allowed range.

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. A pair of ropes 7 via suspension wheels 25, 26
The other end of each of the ropes is the balance fixing portion 10 of each of the balance weights 2.
It is fixed at 2. The rope fixing plate 101 and the rope fixing portion 102 are attached so as not to interfere with each other during lifting. The suspension cars 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 a mounting member 27, and the car 1 reaches the top floor in a portion where the car 1 does not collide with the hoistway. It is sometimes installed in the same or lower part as the ceiling of the car 1. 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, the armature 3 of the linear motor mounted in the central portion of the counterweight 2 is vertically mounted on the opposing surfaces of the car 1 and the counterweight 2, and the secondary conductor 4 is also the armature 3 of the linear motor.
Are arranged in the same direction so as to engage with. 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. 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 suspension cars 25 and 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 counterweight 2
The armature 3 of the linear motor mounted in the center of the
Since the counterweight 2 is mounted vertically on the facing surface of the counterweight 2, the thickness dimension D of the counterweight 2 can be made 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 the car 1
Since it is suspended by the rope 7 fixed to the rope fixing plate 101 provided on the bottom of one side of the
The moment F1 shown in is added. For this reason, the car 1 is moved by the rollers 30 so that the car 1 moves up and down along the car rail 11.
Since it is guided by A, 30B, 30C, and 30D, the moment F1 is applied to the car rail 11 and the roller 30B.
There is a problem in that the noise is added during the period of time, the sound of ascending and descending is generated, and the wear of the roller is accelerated. 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,
40 is attached to the car 1 via a spring, and the rail 1
Roller 41 which engages with 1 to support the X-axis direction of the car 1,
42 is attached to the car 1 via a spring, and the rail 1
It is a roller that engages with 1 to support the Y-axis direction of the car 1.
Since the car 1 is suspended by the rope 7 by the rope fixing plate 101, 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, reference numerals 43 and 44 denote electromagnets which are attached to the car 1 so as to face the car rail 11 and generate a force F3 / 2 in a direction opposite to F1 / 2 of the above-mentioned moment. FIG. 8 is a side view of FIG.
The force F3 is attached to the upper portion of the car 1 so that the force F3 works efficiently against the moment F1. Since the force F3 of the electromagnets 43 and 44 acts in the direction of canceling the moment F1, the force applied between the car rail 11 and the rollers 37 and 39 is weakened, and the lifting noise and the wear of the rollers are suppressed.

Sixth Embodiment The machine room-less elevator device configured as described in the first, second, and third embodiments is provided with a suspension vehicle 5,
Since members such as 25 and 26 do not interfere with the car 1 that is moving up and down, the car 1 can rise to just below the ceiling 9 of the hoistway. However, while the height of the building can be effectively used, the safety dimension TC0 at the top is reduced, so it is necessary to enable safe work 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.
For inspection work, open the door and suspend from the inspection opening 21A 2
In some cases, a brake device (not shown) for stopping the raising and lowering of the car 1 may be engaged in the vicinity of the suspension vehicles 25, 26 for inspecting the brakes 5, 26. In this case, therefore, the brake device 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. In the sixth embodiment, the example of the inspection work performed without riding on the upper portion of the car 1 has been described.
Depending on the work contents, it may be necessary to get on the top of the car 1. 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 room less elevator apparatus of the present invention has a top safety dimension TC0.
As a measure for reducing the above, the worker who is working on the car 1 can safely perform the inspection work. 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 constituted by a light-receiving device 51 that receives light from the light-emitting device 50 and outputs a signal. When the operator is working on the car 1, the operator interrupts the light emitted from the light emitting device 50, so that the light receiving device 51 stops the output signal to the control device of the linear motor driving device (not shown). Controls the raising and lowering 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 below 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 is used by closing the elevating part of the car 1 and inclining it to a position EF that substantially coincides with the uppermost floor during inspection. It is an inspection scaffold pivotally supported by the F part in the hoistway. The inspection scaffold 53 is
The tip end is tied to the wire 54, and the wire 54 is tied to the manual winding handle 55 via the roller 56 so that it can be operated from the building side. When the manual winding handle 55 is turned, it falls from the FG position to the EF position. When turned in the opposite direction, it returns from the EF position to the FG position. Further, by providing a sensor (not shown) that detects 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 device. 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]

Since the elevator apparatus without machine room according to the present invention has an inspection port provided on the side of the car for inspecting the equipment installed in the hoistway, it is installed in the hoistway from this inspection port. The equipment can be safely inspected.

Further, a brake device for stopping the raising and lowering of the car is arranged in the hoistway, and the brake device can be inspected through the inspection port.

Further, since the inspection port is provided on the side of the car facing the drive device, the drive device can be inspected from the inspection port.

The machine room-less elevator device according to the present invention has an inspection port provided in the hoistway wall for inspecting the device installed in the hoistway, and therefore the device installed in the hoistway from this inspection port. Can be safely inspected.

Since the inspection port is provided on the side facing the drive unit, the drive unit can be inspected from the inspection port.

[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

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazuhiko Sugita             1 Hishimachi, Inazawa City Inazawa, Mitsubishi Electric Corporation             Inside the factory F-term (reference) 3F301 BA16 BD01 CA13                 3F304 BA02 BA22 CA18 DA11                 3F305 BA02 BB02 BB19 BC18                 3F306 AA02 CB04 CB31

Claims (5)

[Claims] 1. A car and a counterweight for moving up and down in a hoistway, a drive device provided in the hoistway for moving up and down the car and the counterweight, and the balance installed in the hoistway. A counterweight rail for guiding a weight, a car rail installed in the hoistway, which guides the car, a rope for suspending the car and the counterweight, and provided in the hoistway, and A machine having a winding means around which a rope portion from the car to the counterweight is wound, and an inspection port provided on the side surface of the car for inspecting equipment installed in the hoistway. Roomless elevator equipment. 2. A machine room less according to claim 1, wherein a brake device for stopping the elevator car from moving up and down is arranged in the hoistway, and the brake device can be inspected through the inspection port. Elevator equipment. 3. The machine room less elevator apparatus according to claim 1, wherein the inspection port is provided on a side of the car side wall facing the drive unit. 4. A car and a counterweight for moving up and down in a hoistway, a drive device provided in the hoistway for moving the car and the counterweight up and down, and the balance installed in the hoistway. A counterweight rail for guiding a weight, a car rail installed in the hoistway, which guides the car, a rope for suspending the car and the counterweight, and provided in the hoistway, and It has a winding means around which a rope portion from the car to the counterweight is wound, and an inspection port provided in the hoistway wall for inspecting equipment installed in the hoistway. Machine roomless elevator equipment. 5. The machine-roomless elevator apparatus according to claim 4, wherein the inspection port is provided on a side of the hoistway wall facing the drive device.