JP2008189430A - Elevator device, and test method for emergency stop device thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device, a test method, etc., in which actuation of an emergency stop device can be easily ensured. <P>SOLUTION: The test method is for ensuring actuation of the emergency stop device 19 installed on an elevator comprising a car 2 and a balance weight 7 suspended by a main cable 4 to be lifted up and down by a drive sheave 5 on a hoist so as to prevent fall of the car 2. After the emergency stop device 19 is actuated, the balance weight 7 is lifted by a lifting means disposed under the balance weight 7, so that loosening of the main cable 4 or idling of the drive sheave 5 is generated. <P>COPYRIGHT: (C)2008,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 and a test method that can easily check the operation of an emergency stop device.

  In order to achieve the above object, the present invention provides an emergency stop device that is attached to an elevator having a car and a counterweight suspended by a main rope and raised and lowered by a drive sheave of a hoisting machine to prevent the car from falling. In the test method for confirming the operation, after the emergency stop device is operated, the counterweight is lifted by the weighting means disposed below the counterweight to cause the main rope to loosen or the drive sheave to idle. I made it.

  ADVANTAGE OF THE INVENTION According to this invention, the elevator apparatus and test method 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.

  1 and 2 are plan sectional views 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 19 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 19 is mechanically operated so that the car 2 can be stopped with a large frictional force. Furthermore, a car shock absorber (not shown) is provided in the pit 20 below the hoistway 1 in preparation for the case where the car 2 is lowered without reaching the speed at which the emergency stop device 19 should operate. .

  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.

Next, a test method for confirming the operation of the safety device 19 installed in the car 2 of this embodiment will be described with reference to FIG. First, the drive sheave 5 is rotated until the upper end of the car is located within the height range of the top floor entrance 15. Secondly, the emergency stop device 19 is intentionally operated without the car 1 reaching the overspeed state. Specifically, the speed governor is tripped by remote control or the like to operate the rope gripping mechanism. Third, the weighting means carried in from the outside of the hoistway 1 is disposed below the counterweight 7 and on the counterweight buffer 10. Specifically, after the counterweight buffer 10 is covered with the height adjustment base 11, the hydraulic jack 12 is attached to the upper part of the height adjustment base 11. Fourthly, with the hoisting machine brake applied, the counterweight 7 is lifted by the weighting means to cause the main rope 4 between the drive sheave 5 and the counterweight 7 to loosen (see the dotted line in FIG. 1). . Fifth, the brake of the hoisting machine is released and the drive sheave 5 is rotated to move the slack of the main rope 4 to the main rope 4 between the car 2 and the drive sheave 5 (see the broken line in FIG. 2). . At this time, an examiner or the like confirms visually from the landing side that the lowering of the car 2 is suppressed and that the main rope 4 between the car 2 and the drive sheave 5 is loosened. . If the lifting amount of the counterweight 7 is increased, the amount of looseness of the main rope 4 also increases. In this case, the contact angle between the drive sheave 6 and the main rope 4 is reduced, and as a result, the drive sheave 5 and the main rope 4 are reduced. The frictional force between is reduced. If the drive sheave 5 is further rotated in such a state, the drive sheave 5 is idled. Therefore, when such a phenomenon is confirmed, it can be considered that the emergency stop device 19 of the car 2 has been operated in the same manner as when the looseness of the main rope 4 is confirmed.

FIG. 4 is a diagram showing the configuration of the counterweight 7 and the weighting means in the present embodiment. As shown in FIG. 4, the counterweight 7 is housed in a counterweight frame 21, a shock absorber receiver 22 is attached near the center of the bottom of the counterweight frame 21, and a counterweight buffer is provided in a pit 20 below the counterweight. A vessel 10 is installed. The weighting means includes a height adjustment base 11 that covers the counterweight buffer 10 and a hydraulic jack 12 that is attached to the top of the height adjustment base 11. In addition, since this weighting means is arrange | positioned at the time of the operation test of the safety device 19, and is not arrange | positioned in the pit 20 at the time of normal driving | operating, the space in the pit 20 is not limited. Further, instead of the hydraulic jack 12, a pneumatic jack or other driving device may be used.

  According to the present embodiment as described above, the emergency stop device 19 of the car 2 can be operated without using the hoisting means to increase the torque of the hoisting machine or the capacity of the control device. It is possible to easily and quickly raise the counterweight 7 itself. As a result, the operation test of the emergency stop device 19 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, a phenomenon such as idling of the drive sheave 5 is caused by lifting the counterweight 7 itself. It can be easily generated.

  Furthermore, according to the present embodiment, even if it is an existing elevator, the operation of the emergency stop device 19 can be confirmed without any particular improvement in the counterweight 7 and the counterweight buffer 10. In addition, if the height dimension BH of the height adjusting table 11 is appropriately adjusted according to the individual elevator, when the weighting means is arranged with the car 2 positioned in front of the top floor landing floor 14, It is possible to bring the upper end of the weighting means closer to the lower end of the counterweight 7. Then, a gap A as an observation opening can be arbitrarily secured between the upper part of the car 2 and the upper frame of the top floor entrance 15, and the rotation state of the drive sheave 5 during the operation check test of the emergency stop device 19. It is easy to visually check the looseness of the main rope 4 from the top floor entrance 15. In addition, the weighting means in the present embodiment is not limited to the configuration of the counterweight shock absorber 10, and has an advantage that it can be arranged below the counterweight 7 every time an operation test of the emergency stop device 19 is performed.

FIG. 5 is a diagram showing the configuration of the weighting means in the second embodiment of the present invention. The weighting means in this embodiment is arranged below the counterweight 7 as in the first embodiment, but is attached to the counterweight buffer 10 unlike the first embodiment. Specifically, using the pipe-shaped counterweight buffer guide 9a provided in the spring-type counterweight buffer 10, the weighting means of this embodiment is attached. Further, the weighting means of the present embodiment includes a weighting means installation guide 11d inserted into the counterweight buffer guide 9a, a base 11b to which the weighting means installation guide 11d is fixed, and the base 11b. Are provided with a height adjustment base 11 extending in the vertical direction, a hydraulic jack 12 for lifting the counterweight 7, and a base 11 a to which the hydraulic jack 12 is attached. Here, the height adjustment base 11, the bases 11a and 11b, and the weighting means installation guide 11d are integrally formed. As a method for installing the weight means, first, the weight means setting guide 11d is inserted into the counterweight buffer guide 9a, and the pedestal 11b is placed on the upper surface of the weight counter shock absorber 10; A hydraulic jack 12 is mounted on the upper surface of the base 11a.

  Therefore, according to the present embodiment, it is possible to easily install the weighting means by using the counterweight buffer 10, and it is possible to shorten the entire time required for the operation test of the emergency stop device 19. In addition, the height adjusting table 11 can be downsized as compared with the first embodiment described above. In this embodiment as well, the lifting of the counterweight 7 by the weight means makes it possible to loosen the main rope 4 and drive sheave 5 during the operation test of the emergency stop device 19 without greatly changing the overall configuration of the elevator. Can be easily generated. As a result, the operation check test of the emergency stop device 19 can be easily performed with few parts.

FIG. 6 is a diagram showing the configuration of the weighting means in the third embodiment of the present invention. Unlike the second embodiment described above, the weighting means in this embodiment is not a spring type but an oil-filled type as a counterweight buffer. When the weighting means of this embodiment is installed, first, the height adjusting base 11 and the base 11a are mounted on the counterweight oil-filled shock absorber seat 18 at the top of the counterweight oil-filled shock absorber 16. After the base 11b fixed integrally is mounted and fixed by the base mounting bolt 11c, the hydraulic jack 12 is mounted on the base 11a. This embodiment can achieve the same effect as that of the second embodiment described above. In this embodiment, an oil-filled type is used as the counterweight buffer 10, but a spring type may be used. In the first to third embodiments described above, The operation check method of the emergency stop device 19 provided on the car 2 for preventing the car 2 from falling has been described. However, the emergency stop device provided on the counterweight 7 for preventing the car 2 from abruptly rising. With respect to the operation confirmation method, it is possible to obtain the same effect as in the case of the above-described emergency stop device 19 by lifting the car 2 by the weighting means.

It is a figure which shows the plane cross section of the hoistway of the elevator apparatus in 1st Example of this invention (the state where the main rope of the counterweight side loosened). It is a figure which shows the plane cross section of the hoistway of the elevator apparatus in the 1st Example of the present invention (state where the main rope by the side of a car is loosened). It is a flowchart which shows operation | movement of the emergency stop test of the elevator apparatus in 1st Example of this invention. It is a figure which shows the structure of the counterweight in the 1st Example of this invention, and a weighting means. It is a figure which shows the structure of the buffer and the weighting means for a counterweight in 2nd Example of this invention. It is a figure which shows the structure of the buffer for counterweights and the weighting means in the 3rd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Passenger car 3, 8 Main rope stop 4 Main rope 5 Drive sheave 6 Guide pulley 7 Counterweight 9 Counterweight buffer stand 9a Counterweight buffer guide 10 Counterweight buffer 11 Height adjustment stand 11a , 11b Pedestal 11c Pedestal mounting bolt 11d Heavy load installation guide 12 Hydraulic jack 13 Bottom floor landing floor 14 Top floor landing floor 15 Top floor entrance / exit 16 Counterweight-equipped oil buffer 17 Counterweight-equipped oil buffer base 18 Counterweight seat 19 with oil for counterweight 19 Emergency stop device 20 Pit 21 Counterweight frame 22 Shock absorber receiver

Claims (14)

  In a test method for confirming the operation of an emergency stop device attached to an elevator having a car and a counterweight suspended by a main rope and raised and lowered by a drive sheave of the hoisting machine, the emergency stop device is confirmed. After the operation, the test method is characterized in that the counterweight is lifted by a weighting means arranged below the counterweight to cause the main rope to loosen or the drive sheave to slip.   2. The test method according to claim 1, wherein after the emergency stop device is operated, a weighting means is disposed below the counterweight.   3. The test method according to claim 1, wherein the weighting means is disposed on the counterweight buffer.   3. The test method according to claim 1, wherein the weighting means is attached to the counterweight buffer.   5. The test method according to claim 1, wherein the emergency stop device is operated after the drive sheave is rotated until the upper end of the car is positioned within the height range of the uppermost entrance / exit. .   In a test method for confirming the operation of an emergency stop device that is attached to an elevator having a car and a counterweight suspended by a main rope and raised and lowered by a drive sheave of the hoisting machine to prevent a sudden rise of the car, the emergency stop device is After the operation, the test method is characterized in that the car is lifted by a weighting means disposed below the car to cause the main rope to loosen or the drive sheave to slip.   In an elevator apparatus provided with a hoisting machine that drives a car and a counterweight suspended by a main rope, and an emergency stop device that operates when the car is overspeeded and prevents the car from falling. The elevator apparatus characterized by the weight means which lifts the said counterweight at the time of the test of an emergency stop apparatus being arrange | positioned under the said counterweight.   In an elevator apparatus equipped with a hoisting machine that drives a car and a counterweight suspended by a main rope, and an emergency stop device that operates when the counterweight enters an overspeed state and prevents a sudden rise of the car, An elevator apparatus characterized in that a weighting means for lifting the car during the test of the emergency stop device is disposed below the car.   9. The elevator apparatus according to claim 7, wherein the weighting means is attached to a shock absorber for the car or the counterweight.   10. The elevator apparatus according to claim 9, wherein the weighting means includes a height adjustment base that covers the shock absorber and a hydraulic jack that is attached to an upper portion of the height adjustment base.   In Claim 9, the said weight means is a base mounted on the upper surface of the shock absorber, a height adjusting base extending in a direction perpendicular to the base, and an upper portion of the height adjusting base. An elevator apparatus comprising an attached hydraulic jack.   A lifting device for lifting a car or counterweight during an emergency stop test of an elevator, the base being placed on the upper surface of a shock absorber of the car or counterweight, and extending in a direction perpendicular to the base And a hydraulic jack attached to an upper portion of the height adjusting table.   In a test method for confirming the operation of an emergency stop device attached to an elevator having a car and a counterweight suspended by a main rope and raised and lowered by a drive sheave of the hoisting machine, the emergency stop device is confirmed. After the operation, the counterweight is lifted, the drive sheave is rotated to loosen the main rope between the car and the drive sheave, and the looseness of the main rope is confirmed from the elevator landing side. Test method to do.   14. The balance weight according to claim 13, wherein the counterweight is lifted by a weighting means to loosen the main rope between the drive sheave and the counterweight, and then the drive sheave is rotated so that the looseness of the main rope is reduced with the ride car. The test method is characterized in that the main rope is moved between the drive sheaves and the looseness of the main rope is confirmed from the top floor entrance.

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