JP2007217154A - Elevator testing method, its auxiliary device, and elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device and a testing method for confirming the operation of an emergency stop device easily. <P>SOLUTION: In this testing method for the elevator for confirming operation of the emergency stop device 23 of a car 2 due to suppression of descent of the car 2 even while a driving sheave 5 of a hoisting machine is rotated, the driving sheave 5 of the hoisting machine is rotated in the direction in which a counterweight 7 rises while a restoration force generating means is deformed due to descent of the counterweight 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator having a car and a counterweight, and more particularly to a technique suitable for checking the operation of an emergency stop device.

  In many elevator systems, a car and a counterweight are connected by a main rope, and a hoisting machine with a drive sheave incorporated in the vicinity of the middle part of the car and the counterweight is arranged. Further, a main rope is wound around the drive sheave, and the drive sheave and the counterweight are moved up and down by rotating the drive sheave. Therefore, the car is equipped with an emergency stop device in preparation for any abnormal situation such as when the main rope is cut.

  In such an elevator system, when checking the operation of the installed emergency stop device for an elevator, performing a test under the same conditions as in actual conditions such as dropping the car may cause damage to some equipment. That's not a good idea. Therefore, as a simple method, first, the emergency stop device of the car is intentionally operated, and at the same time, it is driven to raise the counterweight. At this time, although the drive sheave is rotating, It is generally allowed to perform the test by making sure that the car is not lowered by the emergency stop device.

  For example, in Patent Document 1 below, when checking the operation of the emergency stop device, the torque of the hoisting machine required to idle the drive sheave is reduced by cutting off the counterweight and reducing the weight. It is described that the enlargement of the hoisting machine is suppressed.

JP 2003-2564 A (summary etc.)

  However, the elevator apparatus described in Patent Document 1 has a complicated structure of the counterweight, so that its manufacture is not easy, and even when a plurality of elevators are installed, each counterweight has a special counterweight. Is required. Moreover, it is difficult to apply the special counterweight of the said patent document 1 to the existing elevator which has a normal counterweight.

  An object of the present invention is to provide an elevator apparatus, a test method, and the like that can easily check the operation of an emergency stop device.

  In order to achieve the above object, the present invention provides an elevator for confirming the operation of an emergency stop device for a car by preventing the lowering of the car even when the drive sheave of the hoisting machine is rotating. In the test method, the driving sheave of the hoisting machine is rotated in the direction in which the counterweight rises in a state where the restoring force generating means is deformed by lowering the counterweight.

  ADVANTAGE OF THE INVENTION According to this invention, the elevator apparatus and test method etc. which can confirm operation | movement of an emergency stop apparatus easily can be provided.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a plan sectional view of a hoistway 1 of an elevator apparatus according to a first embodiment of the present invention. The elevator apparatus of the present embodiment has a car 2, a counterweight 7 and a hoist (not shown) in the hoistway 1, and the car 2 and the counterweight 7 are suspended by the main rope 4 and wound. It is configured to move up and down by the driving force of the drive sheave 5 of the upper machine.

  Here, the main rope 4 extends upward from the main rope stopper 3 provided on the car 2, is wound around the guide pulley 6 via the drive sheave 5, extends downward, and is provided on the counterweight 7. It is configured to reach the main clasp 8. In addition, as the main rope 4 or the drive sheave 5 in the present embodiment, a material other than steel, for example, a material covered with a resin may be used. The car 2 is lifted and lowered along a car guide rail (not shown), and the counterweight 7 is configured to go up and down along a counterweight guide rail (not shown).

  Further, an emergency stop device 23 is installed in the car 2, and a speed governor (not shown) is installed near the upper part of the hoistway 1. When the speed governor rotates and reaches an abnormal speed as the car 2 moves, the rope gripping mechanism of the speed governor operates to grab the speed governor rope, via the connecting member of the car 2 Thus, the emergency stop device 23 is mechanically operated so that the car 2 can be stopped with a large frictional force. Further, in case the car 2 is lowered without reaching the speed at which the safety device 23 should operate, the car buffer is provided in the pit 24 at the lower part of the hoistway 1 via the car shock absorber table 13. 14 is provided.

  Similarly, an emergency stop device that operates in response to the overspeed of the counterweight 7 and prevents the counterweight 7 from falling is installed in the counterweight 7 (not shown), and below the counterweight 7. Is provided with a counterweight buffer 10 via a counterweight buffer base 9.

  In this embodiment, a test support having a pedestal placed on the counterweight shock absorber 10, a guide extending in a direction perpendicular to the pedestal, and a restoring portion inserted into the guide. A device is provided below the counterweight 7 separately from the counterweight buffer 10. Details of the test auxiliary device will be described below with reference to FIG.

As shown in FIG. 2, the test auxiliary device of this embodiment is attached by using a pipe-shaped counterweight buffer guide 9 a provided in the counterweight buffer 10. Specifically, the test auxiliary device includes an auxiliary device installation guide 11d inserted into the counterweight buffer guide 9a, a base 11b to which the auxiliary device installation guide 11d is fixed, and a test auxiliary device. An adjusting portion 11 for adjusting the height of the first portion, a restoring portion 12 formed by a coil spring or the like, a restoring portion guide 11c into which the restoring portion 12 is inserted, and a base 11a to which the restoring portion guide 11c is fixed. It has. Here, the auxiliary device installation guide 11d, the base 11a,
11b, the adjustment part 11, and the restoring part guide 11c are integrally formed.

  This test auxiliary device is normally placed in a place that does not interfere with the pit 24. However, at the time of the test, first, after inserting the auxiliary device installation guide 11d into the counterweight buffer guide 9a, The restoring portion 12 is inserted into the restoring portion guide 11 c and installed in the counterweight buffer 10.

  Next, a test method for confirming the operation of the safety device 23 installed in the car 2 of this embodiment will be described. First, as described above, the test auxiliary device is installed below the counterweight 7. Secondly, the counterweight 7 is lowered until the lower end of the counterweight 7 is located near the upper end of the test auxiliary device. Third, the speed governor is tripped by remote control or the like to operate the rope gripping mechanism. Fourth, the counterweight 7 is further lowered and the restoring portion 12 of the test auxiliary device is compressed. Fifth, the drive sheave 5 of the hoist is rotated in the direction in which the counterweight 7 rises. Sixth, the examiner or the like confirms visually that the lowering of the car 2 is suppressed even when the drive sheave 5 is rotating. For example, when the main rope 4 on the car 2 side is loosened or the drive sheave 5 is idle, it can be considered that the emergency stop device 23 of the car 2 has been operated.

  According to the present embodiment as described above, by using the restoring force of the restoring force generating means that has been compressed in advance, it is possible to improve the car 2 without increasing the torque of the hoisting machine or the capacity of the control device. The counterweight 7 itself can be easily lifted with the emergency stop device 23 activated. As a result, the operation test of the emergency stop device 23 can be easily performed without increasing the size of the hoisting machine or the like. Further, even when the coefficient of friction with the drive sheave 5 is increased by using a resin-coated rope or the like as the main rope 4, the counterweight 7 itself can be easily lifted. It is possible to easily generate a phenomenon such as idling.

  Furthermore, according to the present embodiment, even if it is an existing elevator, the operation check of the emergency stop device 23 can be performed without any particular improvement on the counterweight 7 or the like. In addition, by adjusting the height dimension BH of the adjustment unit 11, the stop position of the car 2 can be set in front of the top floor landing floor 16. Accordingly, a gap A can be arbitrarily secured between the upper part of the car 2 and the upper frame of the top floor entrance 17, and the rotation state of the drive sheave 5 and the looseness of the main rope 4 are confirmed during the operation check test of the emergency stop device 23. The effect that it becomes easy to confirm the situation can also be expected.

  FIG. 3 is a diagram showing an elevator test auxiliary apparatus in the second embodiment of the present invention. As shown in FIG. 3, the counterweight 7 is housed in a counterweight frame 25, a shock absorber receiver 26 is attached near the center of the bottom of the counterweight frame 25, and a counterweight buffer is provided in a pit 24 below the counterweight. A vessel 10 is installed. In addition, a test auxiliary device having an adjusting unit 11 and a restoring unit 12 is installed in a pit 24 on the side of the counterweight buffer 10. Further, as with a general elevator, when 1/2 of the rated load is loaded on the car 2, the mass of the counterweight 7 and the mass on the car 2 side are balanced.

  Here, the restoring unit 12 is set so that the amount of deflection due to the mass corresponding to approximately ½ of the rated load capacity of the car 2 is δ. On the other hand, the height of the adjusting unit 11 is adjusted so that the shock absorber receiver 26 reaches the upper surface of the counterweight buffer 10 when the amount of deflection of the restoring unit 12 reaches δ. Therefore, when the lower end of the counterweight 7 is lowered to the upper end of the counterweight buffer 10 in order to confirm the operation of the safety device 23, the weight of the car 2 and the counterweight are balanced by the restoring force of the test auxiliary device. The mass on the 7 side is balanced.

  In this embodiment as well, the restoring portion 12 is deformed by the lowering of the counterweight 7 so that the friction force between the driving sheave 5 and the main rope 4 is reduced, and the driving sheave 7 is moved upward. Since the drive shaft 5 is rotated, it is possible to easily cause a phenomenon such as idling of the drive sheave 5. As a result, the operation check test of the emergency stop device 23 can be easily performed with a small number of parts without increasing the size of the hoisting machine or the like or greatly changing the elevator equipment or configuration.

  FIG. 4 is a diagram showing an elevator test assistance apparatus in the third embodiment of the present invention. The test auxiliary device in this embodiment is also attached to the counterweight shock absorber 10 as in the first embodiment, but unlike the first embodiment, a hole is provided in the center of the base 18. The auxiliary device guide 19 inserted into the restoring portion 12 passes through this hole and is also inserted into the counterweight buffer guide 9a. As a method for installing the test auxiliary device of this embodiment, first, the auxiliary device guide 19 is inserted into the counterweight buffer guide 9a, and the base 18 is placed on the upper surface of the counterweight buffer 10. The restoration unit 12 is inserted using the pedestal 18. Therefore, also in the present embodiment, as in the first embodiment, the installation time of the test auxiliary device can be shortened, and the counterweight buffer 10 can also be expected to have a certain amount of deflection δ1, so that the restoring portion 12 can be shortened, that is, the size of the restoring portion 12 can be reduced.

FIG. 5 is a diagram showing an elevator test assistance apparatus in the fourth embodiment of the present invention. In this embodiment, unlike the above-described embodiment, an oil-filled type is used as a counterweight buffer, not a spring type. When installing this test auxiliary device, first, the base 18a in which the restoring portion guide 11c is fixed to the counterweight oil-filled shock absorber seat 22 at the upper part of the counterweight oil-filled shock absorber 20 is provided. Mount, base mounting bolt 27a,
After fixing by 27b, the restoring part 12 is inserted into the restoring part guide 11c.

  In the first to fourth embodiments described above, the method for confirming the operation of the safety device 23 provided on the car 2 side has been described. However, the method for confirming the operation of the safety device provided on the counterweight 7 side. With respect to, by using the energy accumulated in advance by the restoring force generating means, the same effect as in the case of the emergency stop device 23 provided on the car 2 side can be expected.

  In the first to fourth embodiments described above, the restoring force generating means using the elastic force of the coil spring has been described. However, if the deformed force is to return, the restoring force is generated. It can be used as a means.

It is a figure which shows the plane cross section of the hoistway of the elevator apparatus in 1st Example of this invention. It is a figure which shows the test assistance apparatus of the elevator in 1st Example of this invention. It is a figure which shows the test auxiliary | assistance apparatus of the elevator in 2nd Example of this invention. It is a figure which shows the test assistance apparatus of the elevator in the 3rd Example of this invention. It is a figure which shows the test assistance apparatus of the elevator in the 4th Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Hoistway, 2 ... Riding car, 3,8 ... Main rope stopper, 4 ... Main rope, 5 ... Drive sheave, 6 ... Guide pulley, 7 ... Counterweight, 9 ... Counterweight buffer stand, 9a ... Balance Shock absorber guide for weight 10, shock absorber for counterweight 11, adjusting portion 11 a, 11 b, 18, 18 a pedestal 11 c guide for restoring portion 11 d guide for installing auxiliary device 12, restoring portion 13 ... car shock absorber stand, 14 ... car shock absorber, 15 ... bottom floor landing floor, 16 ... top floor landing floor, 17 ... top floor doorway, 19 ... auxiliary equipment guide, 20 ... balance weight oil Entering shock absorber, 21 ... Oil containing shock absorber stand for counterweight, 22 ... Oil filled shock absorber seat for counterweight,
23 ... Emergency stop device, 24 ... Pit, 25 ... Counterweight frame, 26 ... Shock absorber receiver, 27a, 27b ... Base mounting bolt.

Claims (9)

In the elevator test method of confirming the operation of the emergency stop device of the car, the descent of the car is suppressed even when the drive sheave of the hoisting machine is rotating,
An elevator test method, comprising: rotating a drive sheave of the hoisting machine in a direction in which the counterweight rises in a state where the restoring force generating means is deformed by lowering the counterweight.   2. The restoring force generating means according to claim 1, wherein the restoring force generating means is installed below the counterweight, and after the governor is tripped, the counterweight is lowered to compress the restoring force generating means, and then the counterweight A method for testing an elevator, wherein the drive sheave of the hoisting machine is rotated in a direction in which the hoist is raised. In the elevator test method for confirming the operation of the counterweight emergency stop device by preventing the counterweight from descending even when the drive sheave of the hoist is rotating,
A test method for an elevator, comprising: rotating a drive sheave of the hoisting machine in a direction in which the car ascends in a state where the restoring force generating means is deformed by lowering the car. The hoisting machine that drives the car and the counterweight suspended by the main rope, the shock absorber installed below the car and the counterweight, and the ride that operates in response to the overspeed of the car In an elevator apparatus equipped with an emergency stop device that prevents the car from falling,
An elevator apparatus comprising a restoring force generating means for deforming in advance by lowering of the counterweight when the operation of the emergency stop device is confirmed. The hoisting machine that drives the car and the counterweight suspended by the main rope, the shock absorbers respectively installed below the car and the counterweight, and the counterbalance that operates in response to the overspeed of the counterweight. In an elevator device equipped with an emergency stop device that prevents the weight from falling,
An elevator apparatus comprising a restoring force generating means for deforming in advance by lowering of the car when the operation of the emergency stop device is confirmed, separately from the shock absorber.   In any one of Claim 4 or 5, the said restoring force generation | occurrence | production means is a pedestal mounted in the upper surface of the said buffer, the guide extended in the orthogonal | vertical direction with respect to this pedestal, and with respect to this guide An elevator apparatus comprising a restoration unit to be inserted.   A test auxiliary device, which is attached to a shock absorber disposed under a counterweight or elevator car of an elevator and used to check the operation of an emergency stop device, and is a pedestal mounted on the upper surface of the shock absorber; A test auxiliary device comprising a guide extending in a direction perpendicular to the pedestal and a restoring portion inserted into the guide.   8. The auxiliary test apparatus according to claim 7, wherein the base has a hole, and the guide is inserted into the shock absorber through the hole.   In Claim 7, the said base, the said guide, another guide for inserting in the said buffer, and the adjustment part for adjusting the height of the said test auxiliary | assistance apparatus are integrally formed. A test auxiliary device characterized by.

Images