JP6141461B2 - Elevator apparatus and repair method thereof - Google Patents

Description

  The present invention relates to an elevator apparatus in which a speed governor is provided in a hoistway, and a method for repairing an elevator apparatus in which a new speed governor is installed using an existing emergency stop device.

  In a conventional elevator safety device, a triangular lever is mounted at the bottom of the car. An emergency stop operating lever is connected to the triangular lever via a connecting member. The length of the connecting member is set according to the mounting position of the lifting mechanism portion with respect to the car floor. Thereby, the attachment position with respect to the car floor of a raising mechanism part can be adjusted to the depth direction of a car (for example, refer patent document 1).

JP 2010-89930 A

  For example, when refurbishing a hydraulic elevator without a governor to a machine room-less elevator with a governor, leaving the existing equipment (cage, guide rail, etc.), divert the existing emergency stop device due to layout problems. It was not possible to replace it with a new emergency stop device. For this reason, it is necessary to newly design and manufacture the emergency stop device, which increases the cost. Also, during the renovation work, once the various equipment around the cab is removed to remove the existing emergency stop device, a new emergency stop device is installed, and then the removed device is re-installed and adjusted. It is necessary to fix it, and the repair period is significantly increased.

  On the other hand, in the conventional elevator safety device, the mounting position of the lifting mechanism relative to the car floor can be adjusted only in the direction perpendicular to the axial direction of the emergency stop operating lever. Cannot be adjusted. For this reason, in the renovation work, depending on the position of the existing emergency stop device and the position of the hoistway device, it may be difficult to install a new speed governor while diverting the existing emergency stop device.

  The present invention has been made to solve the above-described problems, and provides an elevator apparatus that can easily install a new speed governor while diverting an existing emergency stop device and a method for repairing the same. For the purpose.

An elevator apparatus according to the present invention is mounted on a car, a car guide rail that guides the raising and lowering of the car, and a car, and has an up lever and a up lever shaft that is a rotation axis of the up lever. And an emergency stop device that holds the car guide rail and stops the car to an emergency stop, a governor rope that circulates as the car moves up and down, and a governor sheave around which the governor rope is wound It has a speed governor that detects the excessive speed of the car and activates the emergency stop device, and the car is equipped with an additional connecting device that connects the lifting lever shaft and the speed governor rope. The device has an additional coupling device frame mounted on the car, first and second ends, and is rotatably held by the additional coupling device frame on the extension of the lifting lever shaft. Horizontal additional extension axis and additional extension axis One end is connected to the pull-up lever shaft, and the additional extension shaft is connected to the pull-up lever connecting tool that rotates together with the pull-up lever shaft, and the second end of the additional extension shaft. An additional lever that rotates integrally with the shaft, and a governor rope coupler that couples the additional lever to the governor rope.
Further, the method for repairing an elevator apparatus according to the present invention includes a step of fixing an additional connecting device frame to a lower portion of an existing car, and a first end portion of the additional extension shaft rotatably held by the additional connecting device frame. , A step of connecting to the pull-up lever of the existing emergency stop device using the pull-up lever connector, a step of connecting the additional lever to the second end of the additional extension shaft, and a governor is installed in the hoistway And a step of winding the governor rope around the governor sheave of the governor, and a step of connecting the additional lever to the governor rope using the governor rope connector.

  In the elevator apparatus and the repair method thereof according to the present invention, the lifting lever shaft and the governor rope are coupled via the lifting lever connector, the additional extension shaft, the additional lever, and the governor rope connector. Even when the speed governor cannot be installed directly above the pull-up lever, a new speed governor can be easily installed while diverting the existing emergency stop device.

1 is a schematic plan view showing an elevator apparatus according to Embodiment 1 of the present invention. It is a side view which shows the elevator apparatus of FIG. It is the front view which looked at the additional connection apparatus of FIG. 1 along the arrow III direction. It is the side view which looked at the additional connection apparatus of FIG. 3 along the arrow IV direction. It is sectional drawing which follows the VV line of FIG. It is sectional drawing which follows the VI-VI line of FIG. It is an exploded view which shows the additional connection apparatus of FIG. It is a disassembled perspective view which shows the additional connection apparatus of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a schematic plan view showing an elevator apparatus (machine room-less elevator) according to Embodiment 1 of the present invention, and FIG. 2 is a side view showing the elevator apparatus of FIG. The car 1 and the counterweight (not shown) are suspended in the hoistway 2 by a suspension body (not shown). As the suspension body, a plurality of ropes or a plurality of belts are used. The suspension body is wound around a drive sheave of a hoisting machine (not shown) installed in the hoistway. The car 1 and the counterweight move up and down in the hoistway 2 by the driving force of the hoisting machine.

  In the hoistway 2, a pair of car guide rails 3 a and 3 b that guide the raising and lowering of the car 1 and a pair of counterweight guide rails (not shown) that guide the raising and lowering of the counterweight are installed. . In this example, the car guide rails 3a and 3b are arranged on one side in the width direction of the car 1 as viewed from directly above (side fork type).

  The car 1 has a car room 4, a car floor 5 provided at the lower part of the car room 4, and an emergency stop beam 6 fixed to the lower part of the car floor 5. An emergency stop device 7 (not shown in FIG. 1) that holds the car guide rails 3a and 3b and makes the car 1 emergency stop is mounted on the lower part of the car 1. The emergency stop device 7 is held by the emergency stop beam 6.

  The emergency stop device 7 includes a pair of pull-up levers 8a and 8b and a horizontal pull-up lever shaft 9 that connects the pull-up levers 8a and 8b. The pull-up levers 8 a and 8 b rotate integrally with the pull-up lever shaft 9 around the pull-up lever shaft 9. The emergency stop device 7 is operated by rotating (raising) the pull-up levers 8a and 8b counterclockwise in FIG.

  A speed governor 10 is installed at the top of the hoistway 2. The governor 10 detects the excessive speed of the car 1 and activates the emergency stop device 7. Further, the speed governor 10 is disposed at the corner of the hoistway 2, that is, on one side in the width direction of the car 1 and behind the back of the car room 4 as viewed from directly above. Further, the governor 10 includes a governor sheave 11, an excessive speed detection switch (not shown), a rope catch (not shown), and the like.

  A governor rope 12 is wound around the governor sheave 11. The governor rope 12 is stretched endlessly in the hoistway 2. A lower end portion of the governor rope 12 is wound around a tension wheel 13 disposed at a lower portion in the hoistway 2.

  The car 1 is equipped with an additional connecting device 14 (not shown in FIG. 2) for connecting the lifting lever 8a and the governor rope 12. The governor rope 12 is connected to the car 1 via the additional connecting device 14 and the pulling lever 8a. As a result, the governor rope 12 circulates as the car 1 moves up and down, and the governor sheave 11 rotates at a speed corresponding to the traveling speed of the car 1.

  3 is a front view of the additional connecting device 14 of FIG. 1 as viewed in the direction of arrow III, FIG. 4 is a side view of the additional connecting device 14 of FIG. 3 as viewed in the direction of arrow IV, and FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 4, FIG. 7 is an exploded view showing the additional connecting device 14 in FIG. 3, and FIG. 8 is a view showing the additional connecting device 14 in FIG. It is a disassembled perspective view shown.

  The additional connecting device 14 includes an additional connecting device frame 15 mounted on the lower part of the car 1, a horizontal additional extending shaft 16 rotatably held by the additional connecting device frame 15, and an additional extending shaft 16. As a pull-up lever connector 17 that rotates integrally with the lever shaft 9, an additional lever 18 that rotates together with the additional extension shaft 16, and a governor rope connector that connects the additional lever 18 to the governor rope 12. And a pulling bar 19.

  The additional connecting device frame 15 is fixed to the car floor 5 by a plurality of car floor fasteners 20 and fixed to the emergency stop beam 6 by a plurality of emergency stop beam fasteners 21. Bolts and nuts are used as the fasteners 20 and 21, respectively.

  As shown in FIG. 7, the additional extension shaft 16 is a first end portion 16 a that is an end portion on the axial pull-up lever 8 a side, and an end portion that is opposite to the axial pull-up lever 8 a. And a second end portion 16b. The additional extension shaft 16 is disposed on the extension of the pull-up lever shaft 9 (coaxially with the pull-up lever shaft 9). Further, the first end portion 16 a of the additional extension shaft 16 is fitted to the end portion of the pull-up lever shaft 9.

  The pull-up lever connector 17 connects the first end portion 16 a of the additional extension shaft 16 to the pull-up lever shaft 9. The pull-up lever connector 17 includes a flat bracket portion 17a and a cylindrical boss portion 17b. The first end portion 16a is inserted into the boss portion 17b and is fixed to the boss portion 17b.

  The bracket portion 17a is superimposed on the pulling lever 8a. The bracket portion 17a is fixed to the lifting lever 8a by the lifting lever fastener 22. Bolts and nuts are used as the pull-up lever connector 22. The additional lever 18 is connected to the second end portion 16 b of the additional extension shaft 16.

  Next, the operation will be described. For example, when the descending speed of the car 1 reaches an excessive speed set in the governor 10 due to breakage of the suspension body, the governor 10 stops the movement of the governor rope 12. As a result, the pulling bar 19 is pulled up with respect to the descending car 1, and the additional lever 18 is rotated about the additional extension shaft 16. Then, the rotation of the additional lever 18 is transmitted to the lifting lever 8a and the lifting lever shaft 9 via the additional extension shaft 16 and the lifting lever connector 17, and the emergency stop device 7 operates.

  In such an elevator apparatus, the pull-up lever shaft 9 and the governor rope 12 are connected using the additional connecting device 14 having the additional extension shaft 16 and the additional lever 18. The speed governor 10 can be installed at a position away from the emergency stop device 7 in the axial direction of the lifting lever shaft 9. That is, even when the speed governor 10 cannot be installed directly above the existing lifting lever 8a, the new speed governor 10 can be easily installed while diverting the existing emergency stop device 7.

  Further, since the bracket portion 17a is fixed to the pull-up lever 8a by the pull-up lever connector 22, it is possible to reduce the labor of processing such as on-site welding when the additional connecting device 14 is installed.

  Furthermore, since the first end portion 16a of the additional extension shaft 16 is inserted inside or outside the pull-up lever shaft 9, the existing pull-up lever shaft 9 and the new additional extension shaft 16 can be easily centered. Can do.

  Next, the repair method of an elevator apparatus is demonstrated. For example, when a hydraulic elevator that does not have a governor is modified to the elevator apparatus of the first embodiment, the additional connecting device frame 15 is fixed to the lower portion of the existing car 1. Next, the first end 16 a of the additional extension shaft 16 that is rotatably held by the additional connecting device frame 15 is attached to the lifting lever shaft 9 of the existing emergency stop device 7 by using the lifting lever connector 17. Connect to

  Thereafter, the additional lever 18 is coupled to the second end portion 16 b of the additional extension shaft 16. On the other hand, the speed governor 10 and the tension wheel 13 are installed in the hoistway 2, and the speed governor rope 12 is wound around the speed governor sheave 11 and the tension wheel 13. Then, the additional lever 18 is connected to the governor rope 12 using the pulling bar 19.

  According to such a repair method, even when the speed governor 10 cannot be installed directly above the existing pull-up lever 8a, the new speed governor 10 can be easily installed while diverting the existing emergency stop device 7. be able to.

In the above repair method, the order of the steps can be changed as appropriate. For example, the speed governor 10 may be installed first, or the additional connecting device 14 assembled in a factory may be installed on site.
In the above example, the hydraulic elevator without the governor 10 is modified to the elevator apparatus of the first embodiment, but the type of the existing elevator apparatus is not limited to this. For example, the present invention can also be applied to a case where an elevator apparatus in which a speed governor is installed at a position different from that in FIG. 1 is modified to the elevator apparatus according to the first embodiment.
Further, in the above example, the side fork type elevator apparatus is shown, but the present invention can also be applied to a normal type elevator apparatus in which the car guide rails are arranged on both sides in the width direction of the car.
Furthermore, in the above example, the additional extension shaft 16 is directly fitted to the pull-up lever shaft 9, but it is not always necessary to directly connect it.

Claims (4)

Basket,
A car guide rail for guiding the raising and lowering of the car,
An emergency stop that is mounted on the car and has a pull-up lever and a pull-up lever shaft that is a rotation shaft of the pull-up lever, and holds the car guide rail to make an emergency stop of the car apparatus,
A speed governor rope that circulates as the car ascends and descends, and a speed governor sheave around which the speed governor rope is wound, detects an excessive speed of the car, Equipped with a governor to operate,
An additional connecting device that connects the pull-up lever shaft and the governor rope is mounted on the car,
The additional connecting device includes:
An additional coupling device frame mounted on the car;
A horizontal additional extension shaft having first and second ends and rotatably held on the additional coupling device frame on an extension of the pull-up lever shaft;
A pull-up lever connector for connecting the first end of the additional extension shaft to the pull-up lever shaft, and rotating the additional extension shaft integrally with the pull-up lever shaft;
An additional lever connected to the second end of the additional extension shaft and rotating integrally with the additional extension shaft;
An elevator apparatus comprising: a governor rope coupling that couples the additional lever to the governor rope.   The elevator apparatus according to claim 1, wherein the pull-up lever coupling member has a flat plate-like bracket portion that is overlapped with the pull-up lever and fixed to the pull-up lever by a fastener.   The elevator apparatus according to claim 1 or 2, wherein the first end portion of the additional extension shaft is fitted to the pull-up lever shaft. Fixing the additional connecting device frame to the lower part of the existing car;
Connecting a first end of an additional extension shaft rotatably held by the additional connecting device frame to a lifting lever shaft of an existing emergency stop device using a lifting lever connector;
Connecting an additional lever to the second end of the additional extension shaft;
Installing the governor in the hoistway, winding the governor rope around the governor sheave of the governor, and using the governor rope connector to connect the additional lever to the governor rope A method of repairing an elevator apparatus including a step of connecting to a rope.

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