JP3413868B2 - Linear motor drive type 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 linear motor drive type elevator apparatus.

[0002]

2. Description of the Related Art In recent years, a conventional hoisting type elevator does not require a hoisting machine, so that it is not necessary to provide a machine room on the roof, and a linear motor drive type elevator device which can effectively utilize the height of the building, for example, Kaisho 57-121568
And Japanese Patent Laid-Open No. 4-55278 have been proposed. FIG. 13 is an explanatory diagram showing the entire conventional linear motor drive type elevator apparatus. FIG. 13A is a plan view of a conventional linear motor drive type elevator apparatus seen from the upper part of a hoistway, FIG. 13B is a side view of the elevator apparatus, and FIG. 13C is a plan view of the elevator apparatus. It is a front view of a counterweight. FIG. 14 (a) shows Japanese Patent Laid-Open No. 4-5.
FIG. 14B is a plan view of the linear motor drive type elevator device shown in Japanese Patent No. 5278, and FIG. 14B is a side view of the elevator device. FIG. 15 (a) shows Japanese Patent Laid-Open No. 57-1215.
15 is a plan view of a linear motor drive type elevator device to which the concept of the elevator device shown in Japanese Patent No. 68 is applied.
(B) is a side view of the said 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 engages with the secondary conductor 4 to generate a thrust force to move the counterweight 2 up and down. 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, 100
It is the gateway of a basket.

In the linear motor drive type 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 balance weight 2 of the car 1 is mounted on the rope. This is an example in which the car 1 and the counterweight 2 are coupled at both ends of the rope 7 via a suspension vehicle 5 installed at the upper part of the hoistway on the opposite surface side.

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-described linear motor drive type elevator device can be lifted and lowered by the linear motor incorporated in the counterweight 2, the hoist can be installed on the hoistway like the conventional hoist type elevator device. It becomes unnecessary. Therefore, it is not necessary to provide a machine room on the roof of the building, and there is an advantage that the floor can be effectively used when the height of the building is limited.

[0006]

Since the conventional linear motor drive type elevator apparatus is constructed as described above, it has the following problems. Car 1 and hoistway ceiling 9
The space between them should be large enough not to be hit by the ceiling or obstacles of the building even if the car goes up too much when riding on the car during maintenance and installation. This dimension is called the top clearance safety dimension TC0. Basket 1
The top clearance dimension TC2, which is a space between the ceiling and the ceiling 9 of the hoistway, is a wasteful space for the building, and therefore is desired to be as small as possible. In the configuration of the linear motor drive type elevator device shown in FIG. 14, since the suspension cars 5 and 6 are located above the car 1, the suspension car 5 is mounted from the ceiling of the car 1.
The dimension TC1 up to 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 configuration of the linear motor drive type elevator apparatus shown in FIG. 15 is such that the wasted space of the top clearance is reduced. 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 car 5 can be installed outside the projection plane of the car 1, so that a person on the car does not hit the suspension car 5 with his / her head, 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. 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, the linear motor drive type elevator apparatus has a top clearance by providing a safety measure at the time of installation and maintenance of the elevator apparatus from the viewpoint of reducing the size of the top clearance and effectively using the height of the building. Safety dimension TC
It is required to reduce 0 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 linear motor drive type elevator apparatus.

[0011]

A linear motor drive type elevator apparatus according to the present invention comprises a car, a counterweight, and a counterweight rail which is installed in a hoistway and which guides the counterweight. A linear motor armature arranged on a counterweight, a secondary conductor of the linear motor installed in the hoistway and engaging with the armature of the linear motor to generate thrust, and the counterweight of the car. Of the suspension wheel disposed on the upper part of the hoistway on the side of the counterweight from the facing surface of the car, and one end is fixed to the side of the car facing the counterweight, and the other end is balanced through the car. In a linear motor drive type elevator device having a rope fixed to the top of the end of the weight that does not have the armature of the linear motor mounted therein, the rotating surface of the suspension vehicle is installed to be inclined with respect to the hoistway wall. Is.

Further, the linear motor drive type elevator apparatus according to the present invention comprises a car, a counterweight, a counterweight rail which is installed in a hoistway and which guides the counterweight, and the counterweight. From the facing surface of the linear motor armature and the secondary conductor of the linear motor that is installed in the hoistway and generates thrust by engaging with the armature of the linear motor. One suspension wheel arranged on the upper part of the hoistway on the side of the counterweight, and one end fixed to the side of the car facing the counterweight, and the other end of the counterweight via the suspension wheel. In a linear motor drive type elevator device provided with one rope fixed at one place on the top of the end side where the armature of the above linear motor is not mounted, the car and the counterweight are hung with one rope, and a suspension vehicle The rotation plane is obtained by installing in an inclined with respect to the hoistway walls.

[0013]

In the linear motor drive type elevator device according to the present invention, the car and the counterweight can be installed close to each other by installing the hoisting car so that the plane of rotation is inclined with respect to the hoistway wall.

[0014]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. Figure 1
(A) is a top view of the linear motor drive system elevator apparatus of one Example of this invention. 1 (b) is shown in FIG. 1 (a).
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 it becomes possible to fix the rope 7 to the top of the
Can be set with a large angle θ with respect to the center line L1 connecting the counterweight 2 with. 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.
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. Since the top safety clearance TC0 can be made equal to the top clearance TC2 without the need, 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.
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.

Example 2. 2 and 3 are explanatory views showing an embodiment of another aspect 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. Suspension car 25,
The other ends of the pair of ropes 7 are fixed to the respective rope fixing portions 102 of the counterweight 2 via 26. The rope fixing plate 101 and the rope fixing portion 102 are attached so as not to interfere with each other during lifting. Hanging car 2
5, 26 are mounting members 27 at positions lower than the ceiling 9 of the hoistway.
It is installed in parallel with the center line of the rail 10 by the car 1 so that the car 1 does not collide with the hoistway, and when the car 1 reaches the top floor, it should be installed in the same or lower position as the ceiling of the car 1. There is. FIG. 3 shows a car 1 in this embodiment.
Shows the state when the car reaches the top floor, 19 is the door on the building side of the top floor, and 20 is passengers 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 mounted vertically 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. They are arranged in the same direction so that they engage with each other. Similar to the second embodiment, the pair of rope fixing plates 1
01, one end of each of the pair of ropes 7 is fixed, and the other end of each of the pair of ropes 7 is fixed to each rope fixing portion 102 of the counterweight 2 via suspension wheels 25 and 26. . Also, the rope fixing plate 101 and the rope fixing portion 1
02 are installed so that they do not interfere with each other during lifting and lowering,
Suspended vehicles 25 and 26 when the car 1 reaches the platform on the top floor
The state of the basket 1 is the same as that of 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 facing surfaces of the car 1 and the counterweight 2, the thickness dimension D of the counterweight 2 is shown in FIG. It can be smaller than the counterweight shown in 2.

Embodiment 4. The linear motor drive type elevator apparatus of the present invention is shown in FIG.
As shown in FIG. 4, since 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, a moment F1 shown in FIG. 5 is applied to the car 1. . Therefore, the car 1 moves up and down along the car rail 11 so that the rollers 30A, 30B, 30C,
Since it is guided by 30D, there is a problem that the moment F1 is applied between the car rail 11 and the roller 30B, which raises or lowers the sound and accelerates the wear of the roller. FIG. 5 shows an embodiment of this measure. In the figure, the rope 31 is the rope fixing plate 101 of the car 1.
Is engaged with a spring 33 which is fixed to the upper portion on the opposite side and is 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.

Example 5. In addition, this embodiment shows another mode of the countermeasure 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 attached to the car 1 via springs, and rollers 41 and 42 are engaged with the rails 11 to support the X-axis direction of the car 1. 41 and 42 are cages via springs. 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. Since the car 1 is suspended by the rope 7 by the rope fixing plate 101, F1 / 2 of the above-mentioned moment is the car rail 11 and each roller 3
Acts between 7,39. 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. 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 of canceling the moment F1, the car rail 11
The force applied between the roller and the rollers 37 and 39 is weakened to suppress the raising and lowering noise and the abrasion of the rollers.

Example 6. In the linear motor drive type elevator apparatus having the configurations shown 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 being moved up and down. You can go up to just below the ceiling 9. 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 linear motor drive type elevator apparatus according to 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. Figure 9
FIG. 3 is a side view of the linear motor drive type elevator device of the present invention, showing a state in which it is stopped at the top floor.
In the figure, 21 is an inspection opening provided in the car 1,
During normal operation, it is closed by a locked door. During the inspection work, open the door and lift the vehicle 25, 2 from the inspection opening 21A.
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 wheels 25 and 26 for performing the inspection of 6. Therefore, in this case, 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 linear motor drive type elevator apparatus of the present invention.
It shows a state of being stopped on the top floor. In the figure,
Reference numeral 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.
The worker 20B opens the door and lifts the vehicle 2 from the inspection opening 21A.
5,26 and the accessories of the suspension vehicles 25,26 can be inspected.

Example 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. In the embodiment of the linear motor drive type elevator apparatus of the present invention, a worker working on the car 1 can safely perform an inspection work as a measure for reducing the top safety dimension TC0. FIG. 11 is a side view of the linear motor drive type elevator apparatus of the present invention, showing a state in which an operator is inspecting the equipment provided on the uppermost floor.
In the figure, 57 is a light-emitting device of a human body detection sensor that detects a worker who is working on the upper part of the car 1, and the light-emitting device 5
It is configured by a light receiving device 51 that receives 0 light 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.

Example 8. FIG. 12 is an explanatory diagram of a linear motor drive type elevator apparatus showing an embodiment of another aspect of safety measures for inspection work near the top floor. In the figure, 53 is the car 1 during normal operation
The counterweight 2 is housed in the opposing space FG, and when inspecting, the elevating part of the car 1 is closed and the balance weight 2 is tilted to a position EF which is almost coincident with the uppermost floor so that the shaft can be used at the F part in the hoistway It is a supported inspection scaffold. 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) 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.

[0024]

As described above, according to the present invention, the car and the counterweight can be installed close to each other by installing the rotating surface of the hoisting car so as to be inclined with respect to the hoistway wall. The size of the hoistway can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a linear motor drive type elevator device 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 linear motor drive type 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 linear motor drive type elevator apparatus 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 top floor.

FIG. 4 is an explanatory diagram of a linear motor drive type elevator apparatus 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 linear motor drive type 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 linear motor drive type elevator device showing a relationship between a conventional car rail and rollers provided in a car.

FIG. 7 is a plan view of a linear motor drive type elevator device 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 linear motor drive type elevator device in which a car has an inspection opening according to an embodiment of the present invention.

FIG. 10 is an explanatory diagram of a linear motor drive type elevator device having an inspection opening on the building side of a hoistway according to an embodiment of the present invention.

FIG. 11 is an explanatory diagram of a linear motor drive type elevator device in which safety measures are taken by a human body detection sensor and an inspection stopper according to an embodiment of the present invention.

FIG. 12 is an explanatory diagram of a linear motor drive type elevator device provided with an inspection scaffold according to an embodiment of the present invention.

FIG. 13 is a configuration diagram of a conventional linear motor drive type elevator device.

FIG. 14 is an explanatory diagram of a conventional linear motor drive type elevator device provided with two suspension wheels.

FIG. 15 is an explanatory diagram of a conventional linear motor drive type 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 Secondary conductor of linear motor 5,6,25,26 suspension car 7,31 rope 8 hoistway walls 9 Hoistway ceiling 10 Counterweight rails 11 basket rails 21,21A inspection opening 42,43 Electromagnet 52 Stopper for inspection 53 Inspection scaffolding 57 Human body detection sensor

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-89787 (JP, A) Actual development 6-20372 (JP, U) Actual development 5-37854 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B66B 1/00-11/08

Claims (2)

(57) [Claims] 1. A basket, a counterweight, a counterweight rail installed on the hoistway to guide the counterweight, a linear motor armature disposed on the counterweight, and a hoistway. Installed on the upper part of the hoistway on the counterweight side of the secondary conductor of the linear motor that engages with the armature of the linear motor to generate thrust and the facing surface of the counterweight of the car. The suspension car and one end of the car are fixed to the surface of the car facing the counterweight, and the other end of the car is equipped with the counterweight of the linear motor through the suspension car.
In the linear motor drive system elevator apparatus provided with a rope fixed to the top of the free end side, the rotating surface of the suspending pulley
A linear motor drive type elevator device, which is installed so as to be inclined with respect to the hoistway wall . 2. A basket, a counterweight, and a hoistway.
And a rail for a counterweight that guides the above counterweight.
And a linear motor armature arranged on the counterweight.
Installed in the hoistway and engaged with the armature of the above linear motor.
The secondary conductor of the linear motor that generates thrust when combined with the above
From the facing surface of the counterweight of the car above the counterweight side
One suspension car installed above the hoistway and one end of the car
Fixed on the side facing the counterweight of the
The other end of the linear motor armature with a counterweight
One rope fixed at one place on the top of the end side that is not mounted
In a linear motor drive type elevator device equipped with
And suspend the above basket and counterweight with one rope
In both cases, the plane of rotation of the hoisting vehicle is inclined with respect to the hoistway wall.
The linear motor drive method characterized by being installed
Levator device.