JP2010168172A - Elevator device - Google Patents

Abstract

It is an object of the present invention to provide an elevator apparatus that is less damaged during operation of an emergency stop device and can be easily restored.
According to the present invention, an emergency stop device 15 for stopping the raising / lowering of a car when the raising / lowering speed of the car 6 exceeds a predetermined value is braked to an outer peripheral surface 11S of a rotary disk 11 provided in the hoisting machine 3. The braking force is applied by the child 18.
When the emergency stop device 5 is operated, the outer peripheral surface 11S of the rotating disk 11 and the brake 18 are damaged, so that the damage is small, and the guide rails 8A and 8B and the main rope 5 for guiding the elevator 6 to move up and down. There is no damage. For this reason, it is only necessary to repair the scratches on the rotating disk or replace the brakes, and the recovery operation can be easily performed.
[Selection] Figure 1

Description

  The present invention relates to an elevator apparatus provided with an emergency stop device that functions when a car lifting speed exceeds a predetermined value, and more particularly to an elevator apparatus that can be easily restored after the emergency stop device is activated.

  Conventionally, an emergency stop device that functions when the elevator car's lifting speed exceeds a predetermined value is already known as disclosed in, for example, Patent Document 1.

  These conventional emergency stop devices are used for emergency stop by pressing a wedge between a car and a guide rail, and a sheave of a hoisting machine around which a main rope for suspending a car is wound. An emergency stop is made by pressing the brake from above.

JP 2007-277013 A

  According to the conventional emergency stop device described above, when the elevator lifting speed exceeds a predetermined value, the elevator can be lifted to stop raising and lowering the passenger safety.

  However, if the elevator device is to be restored after the emergency stop device is activated, the guide rail may be damaged or deformed by the wedge when the wedge is clamped between the car and the guide rail and the emergency stop is performed. As a result, the guide rail must be replaced and centered, and much work time and labor were required for the return operation. In addition, when the sheave of the hoisting machine is pressed by the brake element from the top of the main rope to make an emergency stop, the main rope may be deformed in cross section or the strands may be broken. Similarly, a large amount of work time and labor were required for the return work.

  An object of the present invention is to provide an elevator apparatus that is less damaged during operation of the emergency stop device and can be easily restored.

  In order to achieve the above object, the present invention provides, on the outer peripheral surface of the rotating disk provided in the hoisting machine, a second braking means for emergencyly stopping the raising / lowering of the car when the raising / lowering speed of the car exceeds a predetermined value. It is configured to apply a braking force.

  With this configuration, when the emergency stop device operates, damage to the brake disk is caused by the outer peripheral surface of the rotating disk, so there is little damage, and the guide rail and main guide that guides the raising and lowering of the car. The rope and sheave are not damaged. Therefore, the passengers trapped by raising and lowering the car can be lowered to the nearest floor, and the emergency stop device only needs to correct the scratches on the rotating disk and replace the brakes. It can be done easily.

  As described above, according to the present invention, it is possible to obtain an elevator apparatus that is less damaged during operation of the emergency stop device and can be easily restored.

  Hereinafter, an embodiment of an elevator apparatus according to the present invention will be described with reference to FIGS.

  In the elevator apparatus, a main rope 5 is wound around a sheave 4 of a hoisting machine 3 provided in a machine room 2 located at the top of a hoistway 1, and a car 6 and a fishing rod are caught at both ends of the main rope 5. The weight 7 is connected in the shape of a sword.

  The car 6 is guided by a pair of car guide rails 8A and 8B standing in the hoistway 1, and the counterweight 7 is guided by weight guide rails 9A and 9B. By driving 3 and rotating the sheave 4, the car 6 and the counterweight 7 move up and down in the hoistway 1.

  Further, the hoisting machine 3 is provided with a braking device 10 as a first braking means, and performs deceleration when the car 6 is lifted and holds the car 6 when landing. The braking device 10 includes a rotating disk 11 that rotates integrally with the sheave 4 and a drive unit 12 that drives a brake pad 13 so as to clamp and release the surface of the rotating disk 11 from both sides. Disc brake device.

  The fixing member 14 is provided with an emergency stop device 15 as a second braking means so as to face the outer peripheral surface 11S of the rotary disk 11. In the emergency stop device 15, an electromagnet 17 constituting an electromagnetic attraction mechanism using electromagnetic force is fixed to a bracket 16 supported by a fixing member 14 by an attraction mechanism, and the outer peripheral surface of the electromagnet 17 and the rotary disk 11 is fixed. The brake element 18 is positioned between the upper and lower ends of the brake element 18 and the bracket 16, and the springs 18 </ b> A and 19 </ b> B are interposed between the bracket 16 and the outer peripheral surface 11 </ b> S of the rotating disk 11. Pressing to the side.

  The electromagnet 17 has clamping members 20 </ b> A and 20 </ b> B fixed to the bracket 16 at the upper and lower ends, and the upper clamping member 20 </ b> A is inclined upward and wide on the surface facing the outer peripheral surface 11 </ b> S of the rotating disk 11. The lower pinching member 20B forms an inclined portion 20b that widens downward on the surface facing the outer peripheral surface 11S of the rotating disk 11.

  The brake element 18 has an attracting portion 18A attracted by the electromagnet 17 and wedge portions 18B and 18C having shapes along the slopes of the inclined portions 20a and 20b at the upper and lower ends thereof. It is formed to act in both directions.

  As shown in FIG. 1, the second braking means 15 configured as described above is configured so that the brake element 18 is opposed to the press springs 19 </ b> A and 19 </ b> B by electromagnetic attraction generated by energization of the electromagnet 17 during normal operation of the elevator apparatus. It is attracted to the electromagnet 17. Therefore, the rotating disk 11 is braked by pressing the brake pad 13 against the surface of the car 6 during deceleration before landing on the target floor of the car 6 or by the braking device 10 as the first braking means. is doing.

  On the other hand, when the raising / lowering speed of the car 6 exceeds a predetermined value, the energization to the electromagnet 17 of the emergency stop device 15 as the second braking means is cut off by a command from a control means (not shown). As a result, the electromagnet 17 loses its attracting force, and the brake 18 is pressed against the outer peripheral surface 11S of the rotary disk 11 by the pressing springs 19A and 19B. At this time, since the rotating disk 11 rotates in the direction of arrow A, the wedge portion 18B on the upper side of the brake element 18 is pressed against the outer peripheral surface 11S of the rotating disk 11 and rotates to follow, and is shown in FIG. As described above, the rotation of the rotating disk 11 is stopped by being engaged between the outer peripheral surface 11S of the rotating disk 11 and the upper pressing member 20A. By stopping the rotation of the rotating disk 11, the rotation of the sheave 4 of the hoisting machine 3 is also stopped, and the raising of the car 6 is stopped.

  When the car 6 descends beyond a predetermined value, the rotation of the rotating disk 11 rotates in the direction of arrow B in FIG. The rotation of the rotating disk 11 is stopped by being caught between the outer peripheral surface 11S of the disk 11 and the lower pressing member 20B.

  When the elevator apparatus is restored after the car 6 is brought to an emergency stop, according to the present embodiment, the car 6 is moved up and down in the reverse direction and the electromagnet 17 is energized and excited. The operation of the emergency stop device 15 is released by attracting the brake element 18. And if a passenger is confined in the car 6, the car 6 is moved up and down to the nearest floor and rescued.

  By the way, the operation of the emergency stop device 15, in other words, the engagement of the rotating disk 11 by the engagement between the outer peripheral surface 11S of the rotating disk 11 of the wedges 18A and 18C of the brake element 18 and the clamping members 20A and 20B. The outer peripheral surface 11S, the pressing members 20A and 20B, and the wedge portions 18A and 18C of the brake 18 are damaged, but when compared with the damage to the car guide rails 8A and 8B and the damage to the main rope 5, Replacement repair work is easy.

  That is, when the car guide rails 8A and 8B are damaged and the car guide rails 8A and 8B are replaced, the damaged car guide rails 8A and 8B are removed and carried out of the hoistway. A new car guide rail must be carried into, installed in, and centered in the hoistway, and the elevator operation must be stopped for a long time. In addition, when the main rope 5 is replaced, a large facility is required for attaching and detaching the main rope, and the commercial operation of the elevator apparatus must be stopped for a long time.

  On the other hand, according to the present embodiment, there is no need to replace the car guide rails 8A and 8B and the main rope 5 that guide or suspend the car 6, and the rotating disk 11, the brake element 18, and the clamping member What is necessary is just to replace | exchange 20A, 20B, and since the replacement | exchange operation | work can be performed only by attaching / detaching well-known fastening means, such as a volt | bolt and a nut, the operation | work time becomes short. Further, since the outer peripheral surface 11S of the rotating disk 11 is damaged, the disk surface is not affected. Therefore, when the damage is slight, the first braking means does not need to be repaired. The function of the rotating disk 11 as a certain braking device 10 is not lost.

  As described above, in this embodiment, the brake element 18 is pressed and brought into contact with the rotating disk 11, so that the brake element 18 follows the rotation of the rotating disk 11 by friction and moves in the rotating direction of the rotating disk 11, and the wedge portion. 18B or 18C is inserted between the rotating disk 11 and the pressing member 20A or 20B and is strongly pressed against the rotating disk 11 to exert a strong braking force. Therefore, unlike the brake that exerts the braking force by the pressing force of the conventional pressing spring, the spring force of the pressing springs 19A and 19B may be a spring force that can press the brake element 18 against the rotating disk 11. Further, since the spring force can be reduced in this way, the attracting force of the electromagnet 17 can be reduced, so that it can be manufactured in a small size and at a low cost, and maintenance can be easily performed.

  By the way, in the present embodiment, the outer periphery of the rotating disk 11 is caused by the wedge effect caused by the engagement between the outer peripheral surface 11S of the rotating disk 11 of the wedge portions 18A and 18C of the brake element 18 and the pressing members 20A and 20B. Although the braking force is applied to the surface 11S, the emergency stop may be performed only by the pressing force regardless of the wedge effect caused by the biting.

  Further, in the present embodiment, the safety device 15 drives the brake element 18 using the electromagnet 17 and the pressing springs 19A and 19B, but the brake element 18 is moved to the outer peripheral surface 11S of the rotary disk 11 using a hydraulic mechanism. It may be pressed or pulled apart.

The principal part schematic side view of the emergency stop apparatus which shows one Embodiment of the elevator apparatus which concerns on this invention. The equivalent view of FIG. 1 which shows the operation state of an emergency stop apparatus. The schematic block diagram of the elevator apparatus by which the emergency stop apparatus by this invention is installed.

  DESCRIPTION OF SYMBOLS 1 ... Hoistway, 2 ... Machine room, 3 ... Hoisting machine, 4 ... Sheave, 5 ... Main rope, 6 ... Riding car, 7 ... Counterweight, 8A, 8B ... Car guide rail, 9A, 9B ... Guide rail for weight, 10 ... braking device, 11 ... rotary disk, 11S ... outer peripheral surface, 12 ... driving unit, 13 ... brake pad, 14 ... fixing member, 15 ... emergency stop device, 16 ... bracket, 17 ... electromagnet, 18 ... brake, 18A ... suction part, 18B, 18C ... wedge part, 19A, 19B ... pressure spring, 20A, 20B ... clamping member, 20a, 20b ... inclined part.

Claims (6)

  A hoisting machine for raising and lowering a car suspended by a main rope, a first braking means provided in the hoisting machine, and raising and lowering the car when the raising and lowering speed of the car exceeds a predetermined value. An elevator apparatus comprising a second braking means for emergency stop, wherein the second braking means is configured to apply a braking force to an outer peripheral surface of a rotating disk provided in the hoisting machine. Elevator equipment to do.   A hoisting machine that raises and lowers a car suspended by a main rope, a disc brake device provided on the hoisting machine, and an emergency stop of the raising and lowering of the car when the raising and lowering speed of the car exceeds a predetermined value In the elevator apparatus provided with the emergency stop device, the emergency stop device is configured to apply a braking force for stopping the raising and lowering of the car to the outer peripheral surface of the rotating disc of the disc brake device. Elevator device. A hoisting machine that raises and lowers a car suspended by a main rope, a disc brake device provided on the hoisting machine, and an emergency stop of the raising and lowering of the car when the raising and lowering speed of the car exceeds a predetermined value In the elevator apparatus equipped with an emergency stop device, a pressing means for pressing the brake against the outer peripheral surface side of the rotating disk of the disk brake device when the lifting speed exceeds a predetermined value, and the rotating disk And a brake member holding means for pulling and holding the brake element away from the outer peripheral surface of the rotating disk during normal operation. Elevator device characterized by.   The brake element has a wedge shape pressed against the outer peripheral surface of the rotating disk, the pressing means is a spring member, and the brake element holding means is an adsorption mechanism that adsorbs the brake element. The elevator apparatus according to claim 3, wherein   The elevator apparatus according to claim 4, wherein the adsorption mechanism is an electromagnetic adsorption mechanism including an electromagnet.   5. The elevator apparatus according to claim 4, wherein the brake element has a wedge shape that acts in both directions of rotation of the rotary disk.

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