JP2006131339A - Shock absorbing device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shock absorbing device for an elevator capable of absorbing even a large shock if the large shock is added to a terminal of a main rope suspending a car. <P>SOLUTION: This device is provided with the main rope suspending a car of an elevator, a main rope support body 2c supporting a load added to the main rope, a rope shackle 5 to which the main rope is connected, a spring presser 6 provided on the rope shackle, a shackle spring 7 provided between the main rope support body and the spring presser to absorb a shock generated in the normal operation of the elevator, and a shock absorbing member 8 provided between the main rope support body and the spring presser to absorb such a shock as to cause a load exceeding a prescribed value to the shackle spring if the load exceeding the prescribed value is generated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an impact absorbing device in a main rope end portion of a rope type elevator.

  A main rope for suspending a rope-type elevator car and a counterweight is usually fixed to a hoistway fixing body such as a hoistway beam or a hoisting body such as a car via a rope shackle connected to an end of the rope. Conventionally, the rope shackle connected to the end of the main rope is directly provided on the hoistway fixing body or the like, or is provided on the hoistway fixing body or the like via a shackle spring. For example, assuming that one end of the main rope is provided at the top of the car via a shackle spring, a vibration isolator is interposed between the shackle spring and the hitch plate provided on the upper frame of the car frame, There is disclosed one that prevents the frictional noise generated between the hitch plate and the propagation of vibrations that occur when the drive device operates (see Patent Document 1).

JP 2001-31346 A

  In the rope type elevator as described above, the vibration generated in the driving device is caused by interposing a shackle spring or a vibration isolator between the rope shackle connected to the end of the main rope and the hoistway fixing body or the elevating body. The shock generated when the car starts and stops, that is, the vibration and shock generated on the main rope side during normal elevator operation are not transmitted to the car side. In the rope type elevator having such a configuration, when an accident occurs in which the counterweight collides with the hoistway pit part, the terminal part of the main rope that suspends the car does not act during normal operation of the elevator. A big impact acts instantaneously. Here, the counterweight that collides with the hoistway pit part is equipped with a shock absorber that can withstand such an impact, but this is not a problem, but the impact is absorbed by the end of the main rope that suspends the car. Such a device is not provided, and the main rope end portion may be damaged, or the hoistway beam and the car frame supporting the main rope end portion may be damaged. That is, the shackle spring and vibration isolator at the main rope end are designed to cope with vibrations and shocks during normal operation of the elevator, and are generated when the counterweight collides with the hoistway pit. It is not possible to cope with such an impact. When such an accident occurs, it takes much time and labor to restore the elevator apparatus.

  Further, in a rope type elevator equipped with a scale device that detects a load in the car based on the amount of deflection of the shackle spring at the main rope end portion, as described in Patent Document 1, vibration isolation is provided between the shackle spring and the hitch plate. If a material is interposed, there is a problem that an accurate load in the car cannot be detected by the scale device. In other words, the vibration-proof rubber used in the vibration-proof material generally has a property that the hardness characteristic changes with temperature and hysteresis, and the deflection of the shackle spring due to a change in ambient temperature or a change in the load in the car. There was a problem that the reproducibility of the quantity deteriorated.

  The present invention has been made to solve the above-described problems. The purpose of the present invention is to provide an elevator that can absorb this impact even when a large impact is applied to the end of the main rope that suspends the car. It is to provide an impact absorbing device.

  Another object of the present invention is to provide an elevator impact absorbing device that can be applied to a device equipped with a weighing device that detects a load in a car based on a deflection amount of a shackle spring.

  The elevator impact absorbing device according to the present invention includes a main rope for suspending an elevator car, a main rope support for supporting a load acting on the main rope, and a main rope supporting the main rope. A rope shackle connected to each other, a spring presser provided on the rope shackle, a shackle spring provided between the main rope support and the spring presser to absorb an impact generated during normal operation of the elevator, and a main rope support It is provided between the body and the spring presser, and includes an impact absorbing material that absorbs the impact when an impact occurs in which the load on the shackle spring exceeds a predetermined value.

  The present invention includes a main rope for suspending an elevator car, a main rope support for supporting a load acting on the main rope, and a rope shackle that passes through the main rope support and is connected to the main rope. The spring presser provided on the rope shackle and the main rope support and the spring presser are provided between the main rope support and the spring presser, which are provided between the main rope support and the spring presser and absorb the shock generated during the normal operation of the elevator. When the impact that the load on the shackle spring exceeds the specified value is provided, it has a structure that includes an impact absorbing material that absorbs this impact, so that a large impact is applied to the end of the main rope that suspends the car Even when this occurs, this impact can be absorbed reliably.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a front view of an impact absorbing device for an elevator according to Embodiment 1 of the present invention. In FIG. 1, a car room 1 in which elevator passengers ride is erected on a car floor 3 provided on a lower frame 2 a of a car frame 2 having a substantially square ring shape. The car frame 2 that supports the car room 1 includes a lower frame 2 a provided with a car floor 3, and vertical frames 2 b that are erected on both ends of the lower frame 2 a and disposed on both sides of the car room 1. The upper frame 2c is provided across the upper part of the vertical frame 2b and disposed above the car room 1, and is arranged so as to surround the car room 1. The main rope 4 for hanging an elevator car and a counterweight (not shown) in a fishing bottle type is connected at one end to one end of a rope shackle 5, and the car frame is connected via the rope shackle 5. 2 is provided on the upper frame 2c. That is, the load acting on the main rope 4 is supported by the upper frame 2 c of the car frame 2.

  The rope shackle 5 having one end connected to the main rope 4 loosely penetrates a through hole (not shown) provided in the vertical direction in the upper frame 2c from above, and is located at the other end located below the upper frame 2c. A substantially disc-shaped spring presser 6 is provided at the portion. Between the upper surface of the spring retainer 6 and the lower surface of the upper frame 2c, a shackle spring 7 in which a rope shackle 5 is loosely passed is provided in the hollow portion, and the car is elastically attached to the main rope 4 by the shackle spring 7. Suspended by. In addition, the main rope 4 can adjust the length by changing the attachment position of the spring retainer 6, and the unbalance between the main ropes 4 can be corrected. Further, the shackle spring 7 has a floating function that alleviates impact generated during normal operation of the elevator, such as when the car starts and stops, and absorbs the inclination of the main rope 4.

  Further, between the upper surface of the spring retainer 6 and the lower surface of the upper frame 2c, there is provided an impact absorbing material 8 having a substantially cylindrical shape in which the rope shackle 5 is loosely passed through the hollow portion. The shock absorber 8 is disposed inside the shackle spring 7 and has a length set so that a predetermined gap is formed between the upper surface of the spring retainer 6 or the lower surface of the upper frame 2c during normal operation of the elevator. ing. That is, when the shock absorbing material 8 is disposed below the upper frame 2c as in the first embodiment, the shock absorbing material 8 is placed on the spring retainer 6 disposed below, and upward. A predetermined gap is formed between the upper frame 2c and the upper frame 2c. This gap is also formed when a rated load is applied to the car room 1, and the impact generated during normal operation of the elevator does not act on the shock absorber 8. FIG. 2 is a detailed view of the essential parts of the impact absorbing device for an elevator according to the first embodiment of the present invention. FIG. 2 (a) shows an elevator when no load is applied to the cab 1 and when a rated load is applied. The state of the main rope 4 terminal part at the time of normal driving | operation is shown.

  In the elevator apparatus having such a configuration, when an accident occurs in which the counterweight collides with the hoistway pit part for some reason, the terminal part of the main rope 4 that suspends the car has a large impact that does not act during normal operation. Works instantaneously. FIG. 2B shows a state of the main rope 4 end portion when the above-described large impact is applied to the end portion of the main rope 4. A load acting on the end portion of the main rope 4 due to an impact generated during normal operation of the elevator, such as when the car starts or stops, is absorbed by the compression of the shackle spring 7. However, when an impact occurs such that the load acting on the terminal portion of the main rope 4 exceeds a predetermined value, such as in an emergency of an elevator, the shackle spring 7 alone cannot absorb all of the impact. When the load acting on the end of the main rope 4 reaches a certain value, the amount of deflection of the shackle spring 7 becomes substantially the same as the length of the gap formed between the shock absorber 8 and the upper frame 2c, The upper surface of the absorbent 8 and the lower surface of the upper frame 2c are in contact. When a load further acts on the end portion of the main rope 4 from this state, both the shackle spring 7 and the shock absorbing material 8 are compressed, and both of them absorb the shock. The shock absorbing material 8 has a spring constant or the like set based on the impact generated in the emergency of the elevator, and has a structure capable of sufficiently absorbing the impact generated in the emergency of the elevator.

  According to the first embodiment of the present invention, as in the case where the counterweight collides with the hoistway pit portion, a large impact that does not occur during normal operation is applied to the terminal portion of the main rope 4 that suspends the cab 1. Even if it acts, the impact can be completely absorbed by the impact cushioning material 8 provided between the spring retainer 6 and the lower surface of the upper frame 2c. There is no fear that the upper frame 2c supporting the four terminal portions will be deformed. In addition, since the load is not applied to the shock absorbing material 8 during normal operation of the elevator and is merely placed on the spring retainer 6, a scale device that detects the load in the car based on the amount of deflection of the shackle spring 7 is provided. It is also possible to cope with the elevator device provided.

  In addition, in this invention, although the case where the one end part of the main rope 4 was provided in the upper frame 2c of the car frame 2 was demonstrated, while the main rope 4 was wound around the return wheel provided in the upper frame 2c, Even when one end portion thereof is provided on a hoistway fixing body such as a hoistway top (2: 1 roping method, etc.), it is possible to obtain the same effect as that of the first embodiment by providing the impact buffering material 8. is there. That is, the main rope support in the claims may be a hoistway fixing body such as a hoistway beam as well as an elevating body such as the upper frame 2c.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an elevator shock absorber in Embodiment 1 of the present invention. It is principal part detail drawing of the impact-absorbing device of the elevator in Embodiment 1 of this invention.

Explanation of symbols

1 Car room 2 Car frame 2a Lower frame 2b Vertical frame 2c Upper frame 3 Car floor 4 Main rope 5 Rope shackle 6 Spring retainer 7 Shackle spring 8 Shock absorber

Claims (3)

  A main rope that suspends an elevator car, a main rope support that supports a load acting on the main rope, a rope shackle that passes through the main rope support and is connected to the main rope, and the rope Between the spring presser provided on the shackle, the main rope support and the spring presser, between the shackle spring which absorbs the impact generated during normal operation of the elevator, and the main rope support and the spring presser An impact absorbing device for an elevator, comprising: an impact absorbing material that is provided on the shackle spring and absorbs an impact when a load on the shackle spring exceeds a predetermined value.   The shock absorber is characterized in that a predetermined gap is formed between the main rope support or the spring presser during normal operation of the elevator so that an impact generated during normal operation of the elevator does not act. Item 2. The elevator shock absorber according to Item 1.   3. The elevator impact absorbing device according to claim 2, further comprising a scale device that detects a load in the car based on a deflection amount of the shackle spring.

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