KR970009387B1 - Brake of an elevator using linear motor - Google Patents

Abstract

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Description

Brake device of elevator using linear motor

1 to 3 are views of a conventional elevator,

1 is a perspective view of a conventional elevator.

2 is a perspective view showing another embodiment of a conventional elevator.

3 is a configuration diagram of a rail brake.

4 and 5 are views of an elevator using a linear motor according to the present invention,

4 is a perspective view of an elevator according to the present invention.

5 is a front view and a side view of the brake device.

* Explanation of symbols for main parts of the drawings

5: count weight frame 6: pulley

7: rope 10: weight

11: mover 15: stator

24: car 25: brake

25a: shaft 25b: brake drum

25c: brake drum 25d: reducer

25e: Handle 25f: Worm

25g: Worm Gear 26: Sieve

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator using a linear motor, and more particularly, to an elevator brake device using a linear motor that installs a car braking brake in a lower portion of a hoistway to improve maintenance, construction and safety.

In a conventional elevator, the hoisting system is spreading and spreading. In this method, a hoist is installed by installing a machine room on an elevator, and one end of a car is suspended by a rope, and one end of the car is suspended by a count weight. Therefore, the size of the hoist is relatively large and a brake device other than a brake device is installed in the machine room. As a result, the corresponding space is inevitably required in the room, and the occupied area of the housing by the machine room becomes a problem, and the cost is high in the steel surface of the machine room structure for the heavy weight.

Therefore, in recent years, elevators using a linear induction motor as a driving source have been in the spotlight in recent years while solving the problems in the hoisting method. Since the linear induction motor is directly driven by the motor itself, it is simple and lightweight as a whole without the need for a rotator such as a hoist and other reducers and pulleys. It is unnecessary and there is an advantage that the elevator system can be miniaturized.

An embodiment of a conventional linear motor elevator is shown in FIGS. 1 to 3.

In Figure 1, the main parts are first shown: 41 is the upper frame, 42 is the hanger frame, 43 is the count weight guide rail, 44 is the car guide rail, 45 is the count weight frame, 46 is the pulley, 47 is the rope, 48 is the count Weight guide rollers, 49 are car guide rollers, 50 are count weights, 51 are movers, 52 are air gap adjustment rollers, 53 are mover dust collectors, 54 are coolers, and 55 are stators. , 56 is a stator upper support member, 57 is an air gap variation detection device, 58 is a stator lower support member, respectively.

Hereinafter, looking at the configuration of an elevator using a conventional linear motor, as shown in FIG. 1, the stator 55 is supported by the upper and lower support members 56 and 58 on the upper frame 41. have.

The mover 51 is provided in the count weight frame 45, and the count weight guide roller 48 is provided in the both sides of the count weight frame 45, and is in contact with the count weight guide rail 43. As shown in FIG. The count weight frame 45 is suspended by the rope 47 and connected to the car 60 via the pulley 46 in the upper part of the hoistway. Car guide rollers 49 are provided on both sides of the car 60, and the car guide rollers 49 are provided in contact with the car guide rails 44.

In the elevator using the conventional linear motor, when a current is applied to the mover 51, an induction magnetic field is generated between the mover 51 and the stator 55, and the stator fixed to the upper and lower parts by the thrust generated thereby. The mover 51 moves along the 55.

When the mover 51 is driven according to the thrust generated between the mover 51 and the stator 55, the car 60 is suspended around the count weight frame 45 and the pulley 46 coupled thereto. The rope 47 is moved to drive the elevator.

In this case, as illustrated in FIGS. 1 and 2, the rail brake 61 installed in the lower portion of the count weight frame 45 or the lower portion of the car 60 cuts or applies current according to the floor calling in the elevator and the hall. As a result, the magnet is turned on and off to serve as a brake. In addition, a drum brake 62 as shown in FIG. 3 is further provided on the pulley 46 as an emergency braking means in order to prevent overrun of the elevator.

The drum brake 62 is composed of a brake drum 63, a brake arm 64, a brake shoe 65 and a magnet 62a for operating the brake arm 64 as shown in FIG. do.

However, when the floor stops, the rail brake 61 device combined with the count weight frame 45 brakes and the car 60 is stopped by the service flower. Is large, wear is also large, the malfunction is easily caused, when the malfunction is locked in the layer except the lowermost layer (lock) there was a bad maintenance and dangerous.

In this embodiment of FIG. 1, the rail brake 61 is installed on the side of the car 60 to enable inspection and repair from the inside of the car 60. However, this also excludes the lowermost floor. In addition, the workability in the dangerous as well as the number of rail brakes 61 to the braking force to endure the unbalanced load is usually 2 to 4 at the same time it is more difficult to open and close work was very bad workability.

Here, the rope 47 is connected only to the relay of the pulley 46, so that the drum brake 62 is integrally formed on the pulley 46 in the upper part of the hoistway to prevent overrun due to inertia travel. Maintainability of the lock state in an emergency is also extremely bad, especially when combined with the rail brake 61.

The present invention was conceived in view of an elevator using a conventional linear induction motor as described above.

An object of the present invention is to provide a brake device of the structure that can easily release the lock state of the brake at the bottom, and can be manually wound up in order to solve the maintenance problems during brake lock, which is a problem of the prior art.

Hereinafter, the present invention will be described in detail with reference to Examples 4 and 5 of the accompanying drawings.

Referring first to the components shown in the drawings, 1 is the upper frame, 2 is the hanger frame, 3 is the count weight guide rail, 4 is the car guide rail, 5 is the count weight frame, 6 is the pulley, 7 is the rope, 8 is Count weight roller, 9 is car guide roller, 10 is count weight, 11 is mover, 12 is air gap adjuster, 13 is mover dustproof device, 14 is air gap fluctuation detector, 15 is stator, 16 is stator upper The support members 18 show the stator lower support members, respectively.

Hereinafter, referring to FIG. 4, the structure of the elevator using the linear motor according to the present invention will be described. The movable element 11 is connected to the count weight frame 5, and the upper and lower portions of the movable element 11 are air. The gap adjusting device 15, the air gap fluctuation detecting device 14, and the mover dustproof device 13 are provided, and the stator 15 penetrating the mover 11 has an upper portion at the upper frame 1. It is supported by the stator upper support member 16, and its lower part is attached to the lower support part B by relaying the stator lower support member 18. A through hole 11a is drilled in the mover 11 to increase cooling efficiency.

Count weight guide rollers 8 are provided at upper and lower ends of the count weight frame 5, count weights 10 are mounted at both sides of the count weight frame 5, and count weight buffers 22 are provided at the lower support part B. ) Is installed. The upper end of the count weight frame 5 is coupled with a rope 7 by a thimble rod 27, which is connected to a lower pit via a pulley 6 installed in the upper hanger frame 2. After passing through the interior of the count weight frame (5) through a sheave (26) driven integrally with the brake (25) installed in the), the pulley (6) is wound again to the upper pulley (6) side of the car (24) ) Is connected to the thimble rod 28 on the upper portion of the car 24.

Moreover, the car guide roller 9 is provided in the upper and lower sides of the car 24, and the car buffer 23 is provided in the lower support part B. As shown in FIG.

An encoder 25b is provided at the shaft end of the sieve 26 of the count weight frame 5.

The count weight 10 and the mover 5 disposed on both sides of the count weight frame 5 and the mover 11 act as a count weight for the car 24.

The car 24 and the count weights 10, 5, and 11 are ropes 7 along the sheaves 26 which are combined with the pulley 6 installed at the top and the brake 25 installed at the bottom. Connected by

In addition, the stator 15 configured as the secondary side faces each other in a state having a predetermined air gap with the movable element 11, and the secondary side conductor which generates an induction magnetic field by supplying power to the primary side conductor connected to the driving power source. The elevator device is configured to move the mover 11 along the travel axis of the stator 15 by constructing.

In addition, in FIG. 4, in order to eliminate the machine room above the hoistway and to arrange the lower brake device while minimizing the hoistway area of the linear induction motor elevator in which the car 24 and the count weights 10, 5, and 11 are disposed. The rope 7 connected from the car 24 is passed through the pulley 6 on the upper side of the car 24 and the count weights 10, 5, and 11 on the upper side pulley 6, and then the count weight frame 5. Through the sieve 26 integrally coupled to the brake 25 installed in the lower portion through the through, the count weight 10, 5, 11 side pulley 6 is wound again to the count weight frame 5 It is a fixed structure.

This structure can reduce the number of pulleys 6 that must be installed on the upper side in order to use the lower brake 25, and can reduce the hoistway width as much as the outer diameter of the pulley 6, thereby making the existing linear. It can have the same width of the hoistway as induction motor type elevators, and the use of the lower brake 25 eliminates the load, wear and malfunction of the brake when braking the existing rail brakes, and especially the floor except the lowest floor. In order to solve the problem, the water-retaining function in the case of malfunction due to the lock is easily solved.

In the brake apparatus according to the present invention, the sieve 2 and the brake drum 25c are simultaneously fastened to the shaft 25a as shown in FIG. Here, the integrated structure of the sieve 26 and the drum 25c is also possible.

An encoder 25b is provided at one side of the shaft 25a, and has a structure in which a key can be assembled at the other side.

In the brake device according to the present invention, as the brake 25 is installed downward, the wrap angle of the rope 7 wound on the sieve 26 becomes 180 degrees, and thus the inertia force generated during braking is applied. With the advantage of minimizing the overrun due to the sliding of the rope 7 by means of this, it is possible to easily maintain and repair at the lower floor when locking due to the emergency stop.

It is also possible to use a device for manual hoisting that was not possible with conventional linear induction motors.

That is, when manual winding is required by using the key installed on the other side of the shaft 25a, it is possible to easily wind it up manually using the reducer 25d.

The reducer 25d may be composed of a worm 25f rotated by the handle 25e and a worm gear 25g engaged with the worm 25f. In addition, the reducer 25d may be configured using a helical gear, a bevel gear, a spur gear, or the like. You may.

The present invention as described above can reduce the number of pulleys 6 to be installed in the upper portion in order to use the lower brake 25, the structure can reduce the width of the hoistway by the outer diameter of the pulley 6 By using the lower brake 25 while using the same hoistway width as the conventional linear induction motor type elevator, the load, wear and malfunction on the brakes when braking the existing rail brakes are easily eliminated. In addition to simply relieving the water-retaining property in the case of malfunction by locking in the excluded floor, as the brake 25 is installed downward, the wrap angle of the rope 7 wound on the sieve 26 becomes 180 degrees. Accordingly, the lock due to the emergency stop with the advantage of minimizing the overrun due to the sliding of the rope 7 due to the inertial force generated during braking There are advantages that make it easy to maintain and repair in the lower layer. It is also possible to use a device for manual hoisting that was not possible with conventional linear induction motors.

Claims (4)

In order to brake the car 24 of the elevator using the linear motor, a manual / auto brake 25 capable of manual operation in case of emergency and malfunction and automatic control is installed, and the combined brake 25 is installed below the hoistway. The brake device of an elevator using a linear motor, characterized in that the dual brake 25 is configured to be manually operated by a rotating handle operating means. According to claim 1, wherein the rope (7) connected from the car 24 is connected to the pulley (6) and the count weight (10), (5), (11) side upper pulley (6) on the lower side of the car (24) After passing through the count weight frame 5 and passing through the sieve 26 of the brake 25 installed below, the count weights 10, 5, and 11 pulley 6 are wound again to count the weight frame. An elevator brake device using a linear motor, characterized by being fixed to (5). According to claim 1 or 2, The brake 25 is the sieve 26 and the brake drum 25c is fastened to the shaft 25a, the encoder 25b is provided on one side of the shaft 25a And a reducer (25d) operated by the rotary handle (25e). 4. The worm gear 25g according to claim 3, wherein the speed reducer 25d is a worm 25f that is rotated by the handle 25e and a worm gear 25g that is coupled to the other end of the shaft 25a and engaged with the worm 25f. Elevator brake device using a linear motor, characterized in that configured.