WO2012032558A1

WO2012032558A1 - Elevator device

Info

Publication number: WO2012032558A1
Application number: PCT/JP2010/005451
Authority: WO
Inventors: 克典西野; 重幸大菅; 泰裕金山
Original assignee: 株式会社日立製作所
Priority date: 2010-09-06
Filing date: 2010-09-06
Publication date: 2012-03-15
Also published as: JPWO2012032558A1; JP5401609B2; CN103079980A; CN103079980B

Abstract

The purpose of the present invention is to provide an elevator device which is capable of safely stopping the movement of a car and ensuring a safe space for a maintenance worker who enters a lifting and lowering path at the time of maintenance. An elevator device according to the present invention is provided with a car (2), a car-side guide rail (6), an emergency stop device (17), a lever (11) for operating the emergency stop device (17), a speed controller (8) that detects abnormal speed of the car (2), and a speed controller rope (10) that is connected with the lever (11), a locking body (19) is provided to the speed controller rope (10), a stopper (12) that is stored in a position where the locking body (19) is not interfered under normal circumstances, and is set to such a position as to be capable of being locked with the locking body (19) at the time of maintenance, and when the stopper (12) is set to such a position as to be capable of being locked with the locking body (19), and the car (2) is to lower to a position lower than a predetermined height of the car (2), the locking body (19) is locked with the stopper (12), and the emergency stop device (17) is forced to operate, thereby stopping the car (2).

Description

Elevator equipment

The present invention relates to a safety device for an elevator device that can secure a safe space in a hoistway during maintenance.

In the conventional elevator apparatus, as in Patent Document 1, a car lowering prevention device is attached to the top of the car-side shock absorber so as to prevent the car from descending beyond a predetermined position. To secure a safe space.

JP 2003-155176 A

The above-mentioned conventional elevator device is necessary for each type of car-side shock absorber, and when there is a maintenance person on the inspection table provided near the lowest floor, the car descending prevention device with a length of several meters It is difficult to safely prevent the movement of the car and it is considered that it will not occur, but in the unlikely event that the movement of the car is not blocked safely, There was also concern about the danger of being caught between them.

This invention is made in view of the said subject, and it aims at providing the elevator apparatus which can prevent the movement of a cage | basket | car safely and can ensure the safe space of the maintenance worker who enters into a hoistway at the time of maintenance.

In order to achieve the above object, an elevator apparatus according to the present invention includes a car that raises and lowers a hoistway, a car-side guide rail that guides the raising and lowering of the car, and the car-side guide rail that is provided on the car. An emergency stop device for stopping the lowering of the car by gripping the lever, a lever for operating the emergency stop device, a speed governor for detecting an abnormal speed of the car, and the speed governor. In an elevator apparatus including a governor rope connected to the lever, the governor rope is provided with a locking body, and is normally housed in a position that does not interfere with the locking body, and is locked during maintenance. A stopper is set at a position that can be locked with the body, the stopper is set at a position that can be locked with the locking body, and the car is lowered to a position lower than a predetermined height. An attempt, the engagement Tometai is the stopper to forcibly operate the safety device locked, characterized in that stopping the car.

The elevator apparatus according to the present invention includes a car that moves up and down a hoistway, a car-side guide rail that guides the raising and lowering of the car, and the car that holds the car-side guide rail and holds the car. An emergency stop device for stopping the ascent of the car, a lever for operating the emergency stop device, a speed governor for detecting an abnormal speed of the car, and being wound around the speed governor and connected to the lever In an elevator apparatus provided with a governor rope, the governor rope is provided with a locking body, and is normally housed in a position that does not interfere with the locking body, and can be locked with the locking body during maintenance. When a stopper is set at a position, the stopper is set at a position where it can be locked with the locking body, and the car is raised to a position higher than a predetermined height, The engaging member is the stopper to forcibly operate the safety device locked, characterized in that stopping the car.

In addition, the elevator apparatus according to the present invention includes a car that moves up and down a hoistway, a counterweight that moves up and down in the opposite direction of the car, a main rope that holds the counterweight and the countercar, and the counterweight. A weight-side guide rail that guides the lifting and lowering of the weight, an emergency stop device that is provided on the counterweight and holds the weight-side guide rail to stop the lowering of the counterweight, and a lever that operates the emergency stop device; An elevator apparatus comprising: a speed governor that detects an abnormal speed of the car; and a speed governor rope that is wound around the speed governor and connected to the lever. And a stopper that is normally stored in a position that does not interfere with the locking body, and is set at a position that can be locked with the locking body during maintenance, When the topper is set at a position where it can be locked with the locking body, and the counterweight attempts to descend to a position lower than a predetermined height, the locking body is locked by the stopper to force the emergency stop device. The counterweight is operated to stop the counterweight.

In addition, the elevator apparatus according to the present invention includes a car that moves up and down a hoistway, a counterweight that moves up and down in the opposite direction of the car, a main rope that holds the counterweight and the countercar, and the counterweight. A weight-side guide rail that guides the lifting and lowering of the weight, an emergency stop device that is provided on the counterweight and holds the weight-side guide rail to stop the lifting of the counterweight, and a lever that operates the emergency stop device; An elevator apparatus comprising: a speed governor that detects an abnormal speed of the car; and a speed governor rope that is wound around the speed governor and connected to the lever. And a stopper that is normally stored in a position that does not interfere with the locking body, and is set at a position that can be locked with the locking body during maintenance, When the topper is set at a position where it can be locked with the locking body, and the counterweight is going to rise to a position higher than a predetermined height, the locking body is locked by the stopper to force the emergency stop device. The counterweight is operated to stop the counterweight.

According to the present invention, an object of the present invention is to provide an elevator device that can safely prevent the movement of a car and secure a safe space for maintenance personnel entering the hoistway during maintenance.

It is a perspective view which shows the outline | summary of the elevator apparatus of Example 1 of this invention. It is an enlarged front view of the principal part which shows the set state of the stopper of the elevator apparatus of Example 1 of this invention. It is an enlarged front view of the principal part which shows the accommodation state of the stopper of the elevator apparatus of Example 1 of this invention. It is a front view which shows the mode of the latching body and stopper of the cage | basket | car side of the elevator apparatus of Example 1 of this invention. It is a front view which shows the mode of the latching body and stopper of the counterweight side of the elevator apparatus of Example 1 of this invention. It is a top view which shows the place which looked at the stopper main body 12a from the arrow A direction shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an outline of an elevator apparatus according to Embodiment 1 of the present invention. As shown in the figure, a car 2 and a counterweight 3 are connected to each other by a main rope 5 in a hoistway 1 of an elevator. The main rope 5 is frictionally driven by the hoist 4, the car 2 is guided by the car side guide rail 6, the counterweight 3 is guided by the weight side guide rail 7, and the car 2 and the counterweight 3 are moved up and down in opposite directions. To do.

The speed governor 8 shown in FIG. 1 monitors the speed of the car 2, and the speed governor rope 10 connecting the speed governor 8 and the return pulley 9 of the speed governor in an annular shape is an emergency stop device operating lever for the car. It is connected with the raising lever 11 which is. The speed governor rope 10 rotates between the speed governor 8 and the return pulley 9 of the speed governor as the car 2 moves up and down, and accordingly, the pulley provided in the speed governor 8 is rotated. The speed of the car 2 is monitored from the rotational speed of the car. For example, when the descending speed of the car 2 reaches an abnormal speed while the car 2 is descending, the governor 8 operates to restrain the governor rope 10. Then, as the car 2 continues to descend, the pulling lever 11 connected to the governor rope 10 restrained is relatively lifted, and the emergency stop device 17 (shown in FIG. 4) operates. When the emergency stop device 17 operates, the emergency stop device 17 provided on the car 2 grips the car-side guide rail 6 and the car 2 is held by the car-side guide rail 6 and stops. The speed governor rope 10 is wound around the speed governor 8 and the return pulley 9, and both ends of the speed governor rope 10 are connected to each other by a pull-up lever 11 with a speed governor rope press.

In the present embodiment, a convex portion 19, which is a locking body having a diameter larger than that of the governor rope 10, is connected to a portion where the pulling lever 11 and the governor rope 10 are coupled to the governor rope 10. Is provided. A stopper 12 is attached to the governor rope 10 at a predetermined position of the hoistway 1.

FIG. 2 is an enlarged front view of the main part showing a set state of the stopper of the elevator apparatus according to the first embodiment of the present invention. FIG. 3 is an enlarged front view of the main part showing a stored state of the stopper of the elevator apparatus according to the first embodiment of the present invention. FIG. As shown in FIGS. 2 and 3, the stopper 12 has a plate-like stopper body 12a, a base portion 12b that rotatably supports the stopper body 12a, and one end of the stopper body 12a that can be rotated by the base portion 12b. It is comprised from the rotation part 12c fixed to.

In the present embodiment, the base portion 12b is fixed to the car side guide rail 6 via a bracket. However, the present invention is not limited to this, and may be fixed directly to the car-side guide rail 6 or directly to the wall of the hoistway 1 and the weight-side guide rail 7 or via a bracket.

FIG. 6 is a top view showing the stopper main body 12a viewed from the direction of arrow A shown in FIG. A C-shaped opening 21 in which a circular part is cut out by a notch 20 is provided at an end opposite to the fixing portion of the stopper main body 12a by the rotating portion 12c, that is, at the tip of the stopper main body 12a. The notch 20 provided in the opening 21 is provided with a width W that is slightly larger than the diameter D of the governor rope 10, and the governor rope 10 is inserted into the opening 21 through the notch 20. And the governor rope 10 can be discharged outside the opening 21.

The opening 21 provided at the tip of the stopper main body 12a is larger than the diameter D of the governor rope 10 and the governor rope presser connecting the governor rope in an annular shape, and smaller than the outer shape of the convex portion 19. It has become. And in this embodiment, the recessed part 22 which receives the front-end | tip part of the convex part 19 is provided in the opening periphery.

As shown in FIG. 3, when the stopper 12 is stored, the stopper 12a is in the storage position, and the stopper storage confirmation switch 14 operates at this time. When the stopper 12 is in the stowed state, even if the car 2 is operated, the convex portion 19 that is a locking body and the stopper 12 do not interfere with each other, and the car 2 can be operated without any trouble.

Further, as shown in FIG. 2, in order to set the stopper 12 in the operating position, the stopper main body 12a is rotated from the retracted state with the rotating portion 12c as an axis, and the governor rope is removed from the notched portion 20 of the stopper 12a. 10 is inserted into the opening 21, and the stopper main body 12a is rotated until it is held by the base portion 12b at a substantially horizontal position, and is set in an operating state, that is, a position where it can interfere with the convex portion 19. When the stopper 12a is set in the operating state, the stopper operation confirmation switch 13 operates. Conversely, when returning the stopper 12 from the operating state to the retracted state, the stopper main body 12a in the operating state is rotated, and the governor rope 10 inside the opening 21 is taken out from the notch 20 of the stopper 12a. Further, the stopper main body 12a may be rotated to a position that is substantially vertical. When the stopper 12a is disposed at the storage position, the stopper storage confirmation switch 14 operates.

Here, the stopper 12a may be set in the housed state and the operating state manually or may be automatically performed using a mechanical device, both of which are possible. Further, it may be configured so that it can be remotely operated from a remote position, or the stopper main body 12a may be operated directly. As an example of remote control, a string such as a wire rope is attached to the tip of the stopper 12a, the string is lowered to an operable position via a return wheel provided on the upper side of the stopper, and the string is lowered in the stored state. In this state, the stopper 12a is in the operating state when it is held in the fixed state, held in the stored state, and the string is released and loosened, thereby enabling remote operation. Such an operation is effective because the operability is improved when the position where the stopper is attached is high and the work is hindered. It is also possible to remotely switch the operation state and the storage state of the stopper using a mechanical device such as a solenoid. Further, when mechanical operation is performed, it is also possible to provide a changeover switch or the like that shifts to maintenance work, and when this switch is changed over, the stopper is automatically operated so as to be positioned in the operation state. With this configuration, the stopper is placed in the operating state before the worker enters the hoistway 1 and the operator in order to perform maintenance work, so that safety is further improved.

Hereinafter, operations during normal operation and maintenance work in this embodiment will be described. During normal operation of the elevator apparatus according to the present embodiment, the stopper 12 is set in the stored state. Interference between the stopper 12 and the convex portion 19 that is a locking body during normal operation hinders a very large operation. For this reason, in the present embodiment, when the operation of the stopper storage confirmation switch 14 cannot be confirmed, a warning that the operation of the stopper storage confirmation switch 14 cannot be confirmed is issued.

When performing maintenance work, for example, when the stopper 12 is automatically set to the operating position, the elevator apparatus is switched to the maintenance mode to move the car 2 to a predetermined position, and the stopper 12 is moved to the predetermined position. Operates automatically to set to the operating state. When the stopper 12 is set, the stopper operation confirmation switch 13 is activated, so that the stopper 12 can be confirmed to be set to the operation state. When the stopper 12 is manually set to the operating state, the car 2 is moved to a predetermined position in advance, and the stopper main body 12a is operated remotely or directly. In the elevator apparatus of the present embodiment, an inspection table assembly switch is provided on the maintenance inspection table provided in the hoistway, and the inspection table assembly switch is operated, or the car is on the lowest floor. When the door switch that detects that the lowest floor doorway is opened, it is assumed that there is a person under the car, but the stopper operation confirmation switch 13 is in the operating state. By enabling the operation of the basket, the maintenance personnel under the cage are kept safe.

When the car is lowered while the stopper 12 is set in the operating state, the governor rope 10 is moved through the opening 21 of the stopper 12 until the convex portion 19 reaches the stopper 12 provided at a predetermined position. The car 2 can be moved up and down to move up and down. However, when the car descends and the convex portion 19 reaches the stopper 12 provided at a predetermined position, the convex portion 19 of the lifting lever 11 and the concave portion 22 of the stopper 12 are fitted, and the lifting lever 11 is It is lifted and the emergency stop device is forced to operate. When the safety device 17 operates, the safety device 17 provided in the car 2 grips the car-side guide rail 6 and the car 2 becomes the car-side guide, as in the case where the descending speed of the car 2 reaches the abnormal speed. It is held by the rail 6 and stops.

FIG. 4 is a front view showing a state where the car is lowered and the lifting lever 11 is pulled up in a state where the convex part 19 is engaged with the concave part 22 of the stopper 12. Can be secured. In addition, since the car 2 and the counterweight 3 are provided so as to be moved up and down in opposite directions by the main rope 5, securing a safe space above the counterweight 3 by stopping the lowering of the car 2. Can do.

Here, considering that the work was performed on the inspection table provided in the vicinity of the floor surface on the lowest floor, the position where the stopper 12 and the projection 19 interfere with each other is at the height at which the inspection table is provided, It is preferable to adjust so that the car 2 stops at a position equal to or higher than the height of the car. According to the present embodiment, the mounting position of the stopper 12 can be freely set, so that a safe space can be easily secured.

In addition, when the maintenance work is completed, the stopper 12 can be stored in the storage position to easily return to the normal operation state. The elevator apparatus according to the present embodiment is configured such that the normal operation of the elevator can be performed when the stopper storage confirmation switch 14 is in an operating state and the reset switch provided outside the hoistway is activated. As a result, the certainty of ensuring the safety of the maintenance staff is improved, and it is also possible to prevent the stopper 12 from being moved to the normal operation while being set in the operating position.

In this embodiment, the convex portion 19 as a locking body is provided at the connecting portion to which the lifting lever 11 of the emergency stop device 17 provided in the governor rope 10 and the car 2 is connected. Such a configuration is good because when the stopper 12 and the convex portion 19 are fitted, the operating force that the car 2 tries to move is efficiently transmitted as the lifting force of the lever.

Further, if the position where the stopper 12 and the convex portion 19 interfere with each other is adjusted, the convex portion 19 can basically be provided at any position of the governor rope. However, in this embodiment, the car 2 tends to descend. Since the emergency stop device 17 is used to prevent this, when the car 2 is positioned at a height at which it is desired to stop further lowering of the car 2, the lift lever of the car 2 from the governor 8 It is preferable that the convex portion 19 is provided in a portion between 11 and 11 and adjusted so that the convex portion 19 and the stopper 12 interfere with each other at that position. In the state where the car 2 is moving in the descending direction, the governor rope 10 is provided with a convex part 19 below the car 2, even if the stopper 12 and the convex part 19 interfere with each other. The elastic force of the slack and the rope itself may absorb the pulling force that is the driving force for driving the pulling lever 11, and the transmission of the force may be hindered. However, with the configuration as described above, when the rotation of the governor rope 10 is stopped due to interference between the stopper 12 and the convex portion 19, the lifting force of the lifting lever 11 can be efficiently transmitted to the lifting lever 11. .

Furthermore, in this embodiment, an emergency stop device 18 for stopping the descent of the counterweight 3 is provided in the counterweight as means for stopping the upward movement from the predetermined position in the car 2. Although not shown in FIG. 1, in the present embodiment, the counterweight emergency stop device 18 having the same structure as the car emergency stop device 17 is also provided in the counterweight 3. A speed governor 8 similar to the car 2, a speed governor return pulley 9, and a speed governor rope 10 are provided in the same manner, and the speed governor rope 10 is connected to the lifting lever 11 of the counterweight emergency stop device 18. Yes. The operation of the safety device 18 is the same as that of the car safety device 17 except that the safety device grips the weight side guide rail 7. A stopper 12 similar to the stopper 12 provided on the car 2 side is provided for the counterweight 3-side governor rope 10 and a latch provided on the counterweight 3-side governor rope 10. The convex part 19 which is a body is also provided.

FIG. 5 is a front view showing a state of the locking body and the stopper on the counterweight side of the elevator apparatus according to the first embodiment of the present invention. As shown in the drawing, when the stopper 12 is set in the operating position, when the counterweight 3 is lowered to a predetermined position, the convex portion 19 provided at the connecting portion with the lifting lever 11 and the concave portion of the stopper 12 are provided. Are fitted to operate the emergency stop device 18 of the counterweight. As a result, further lowering of the counterweight 3 is restricted, so that it is possible to stop the raising of the car 2 connected to each other by the main rope 5, and a safety space 16 can be secured on the upper side of the car 2. The safety of the above maintenance staff is maintained. Of course, since further lowering of the counterweight is restricted, it is possible to avoid dangers such as contact between the counterweight and maintenance personnel.

In this embodiment, when the assembly switch provided on the handrail on the car is operated or the door switch is operated when the door of the landing door is opened despite the floor where there is no car, Since it is assumed that there is a person, the safety of maintenance personnel on the car is maintained by allowing the car to operate only when the stopper operation confirmation switch 13 is in the operating state.

In the present embodiment, the convex portion 19 that is a locking body is provided at the connecting portion to which the lifting lever 11 of the emergency stop device 18 provided on the speed governor rope 10 and the counterweight 3 is connected. With such a configuration, when the stopper 12 and the convex portion 19 are fitted together as in the case of the car 2, the operating force that the counterweight 3 tries to move is transmitted efficiently as the lifting force of the lever. It is.

Further, if the position where the stopper 12 and the convex portion 19 interfere with each other is adjusted, the convex portion 19 can be basically provided at any position of the governor rope. However, in this embodiment, the counterweight 3 will descend. Since the emergency stop device 18 is used to prevent this, the counterweight from the governor 8 with the counterweight 3 positioned at a height at which it is desired to stop further lowering the counterweight 3. Similarly to the car 2, it is preferable that the convex portion 19 is provided in a portion between the three lifting levers 11 and the convex portion 19 and the stopper 12 are adjusted to interfere with each other at that position. In the state where the counterweight 3 is moving in the descending direction, the governor rope 10 is provided with a convex portion 19 below the counterweight 3, and even if the stopper 12 and the convex portion 19 interfere with each other, the governor rope 10 There is also a possibility that the pulling force of the pulling lever 11 is absorbed by the slack of 10 and the elastic force of the rope itself, and the transmission of force is hindered. However, with the configuration as described above, when the rotation of the governor rope 10 is stopped due to interference between the stopper 12 and the convex portion 19, the lifting force of the lifting lever 11 can be efficiently transmitted to the lifting lever 11. .

Also, it goes without saying that the counterweight side stopper can be manually and automatically operated and stored in the same manner as the car 2 side.

In the above elevator device, what was conventionally required for each type of shock absorber is no longer necessary, and a load of several tons was acting on the conventional cage descent prevention device. Since the load for operating the stopper is about 100 kgf, the structure can be simplified and lightened.

In the elevator apparatus according to the present embodiment, the car 2 is moved from the speed governor 8 to the car 2 with the car 2 positioned at a height at which it is desired to stop further lowering of the car side governor rope and the lifting lever connecting portion or the car 2. The convex part provided in the governor rope 10 between the lifting lever 11 and the concave part of the stopper provided in the hoistway are fitted, and the car emergency stop device is forcedly operated to prevent the car from descending. A safe space can be secured under the car. On the counterweight side, the counterweight forcibly operates the emergency stop device at the position of the stopper to prevent it from descending, and the cage and the counterweight are connected to each other by a rope, so the car is also restrained according to the counterweight. In addition, a safe space on the car can be secured. Here, there is no problem because the person on the car or on the car operates the emergency stop device to stop the car.

In the above-described embodiment, the car 2 is lifted and lowered to a predetermined position or more during maintenance using the safety device 17 that prevents the car 2 from being lowered and the safety device 18 that prevents the counterweight 2 from being lowered. Prevented. However, as an emergency stop device, there is a configuration in which the guide rail is gripped in both the ascending direction and the descending direction, and the car or the counterweight is held and stopped by the guide rail.

Such an emergency stop device is provided in the car 2, and the stopper 12 is provided on the convex portion 19 with respect to the governor rope 10 at a predetermined position where the car 2 is prevented from further descending and at a predetermined position where the car 2 is prevented from further rising. By providing so as to interfere with the car 2, it is possible to prevent the car 2 from rising above a predetermined position and lowering below the predetermined position, and to obtain an elevator apparatus that secures a safety space in both the upper and lower parts of the car 2. . If it is such a form, it will become possible to apply also to the self-propelled elevator etc. without the counterweight 3. Of course, if the car 2 and the counterweight 3 are provided so as to be moved up and down in opposite directions by the main rope 5, a safe space can be ensured in both the upper part and the lower part of the counterweight 3.

In addition, an emergency stop device capable of stopping in both the upward and downward directions is provided on the counterweight 3, and the counterweight 3 is adjusted at a predetermined position where the counterweight 3 prevents further downward movement and at a predetermined position where further upward movement is prevented. By providing the stopper 12 on the speed rope 10 so as to interfere with the convex portion 19, the counterweight 3 is prevented from both rising above the predetermined position and falling below the predetermined position, thereby preventing the upper portion of the car 2 and It is also possible to obtain an elevator apparatus that secures a safe space in both lower portions. Furthermore, a safe space can be secured in both the upper and lower portions of the counterweight 3. Such a form is effective when such a device cannot be attached to the car 2 due to restrictions on installation of the elevator device.

Further, in contrast to the first embodiment, an emergency stop device capable of stopping in the upward direction is provided on the car 2 and the counterweight 3, and the stopper 12 is attached to the governor rope 10 to prevent the car 2 from further rising. By providing the position and the counterweight 3 so as to interfere with the convex portion 19 at a predetermined position for preventing further raising of the counterweight 3, the car 2 and the counterweight 3 are prevented from rising above the predetermined position, and thereby the car 2. It is also possible to obtain an elevator apparatus that secures a safety space in both the upper part and the lower part. Furthermore, a safe space can be secured in both the upper and lower portions of the counterweight 3. Such a configuration is also effective when an emergency stop device capable of stopping in the descending direction cannot be attached to the car 2 or the counterweight 3 due to restrictions on the installation of the elevator apparatus.

In addition, as a setting method to the operation position of the stopper 12 in each embodiment described here, the same configuration as that described in Example 1 can be applied.

Further, if the position where the stopper 12 and the convex portion 19 interfere with each other is adjusted, the convex portion 19 can be basically provided at any position of the governor rope. In particular, when the convex portion 19 as a locking body is provided at the connecting portion to which the emergency stop device operating lever of the emergency stop device provided on the governor rope 10 and the car 2 or the counterweight 3 is connected, the stopper Since the operating force that the car 2 or the counterweight 3 tries to move further is efficiently transmitted as the operating force of the operating lever when the projection 12 and the convex portion 19 are fitted, it is good and the mounting is easy. It is also good from the viewpoint of usability.

1 hoistway 2 car 3 counterweight 4 hoisting machine 5 main rope 6 car side guide rail 7 weight side guide rail 8 speed governor 9 speed governor rope return pulley 10 speed governor rope 11 governor rope pulling lever 12 Stopper 13 Stopper operation confirmation switch 14 Stopper storage confirmation switch 15 Safety space under the car 16 Safety space above the car 17 Car emergency stop device 18 Counterweight emergency stop device 19 Convex part (locking body)
20 Notch 21 Opening 22 Recess

Claims

A car-side guide rail that guides the raising and lowering of the car, a car-side guide rail that guides the raising and lowering of the car, and an emergency stop device that holds the car-side guide rail and stops the descent of the car And a lever for operating the emergency stop device, a speed governor for detecting an abnormal speed of the car, and a speed governor rope wound around the speed governor and connected to the lever In the device
While providing a locking body on the governor rope,
It is usually stored in a position that does not interfere with the locking body, and is provided with a stopper that is set at a position that can be locked with the locking body during maintenance,
When the stopper is set at a position where it can be locked with the locking body, and the car is going to descend to a position lower than a predetermined height, the locking body is locked by the stopper and the emergency stop device is An elevator apparatus that is forcibly operated to stop the car.
A car-side guide rail that guides the raising and lowering of the car, a car-side guide rail that guides the raising and lowering of the car, and an emergency stop device that holds the car-side guide rail and stops the raising of the car And a lever for operating the emergency stop device, a speed governor for detecting an abnormal speed of the car, and a speed governor rope wound around the speed governor and connected to the lever In the device
While providing a locking body on the governor rope,
It is usually stored in a position that does not interfere with the locking body, and is provided with a stopper that is set at a position that can be locked with the locking body during maintenance,
When the stopper is set at a position that can be locked with the locking body, and the car is going to rise to a position higher than a predetermined height, the locking body is locked by the stopper and the emergency stop device is An elevator apparatus that is forcibly operated to stop the car.
A car that moves up and down the hoistway, a counterweight that moves up and down in the opposite direction of the car, a main rope that holds the counterweight and the counterweight, and a weight-side guide rail that guides the lifting and lowering of the counterweight And an emergency stop device that is provided on the counterweight and holds the weight-side guide rail to stop the lowering of the counterweight, a lever that operates the emergency stop device, and an abnormal speed of the car In an elevator apparatus comprising a governor and a governor rope wound around the governor and connected to the lever,
While providing a locking body on the governor rope,
It is usually stored in a position that does not interfere with the locking body, and is provided with a stopper that is set at a position that can be locked with the locking body during maintenance,
When the stopper is set at a position where it can be locked with the locking body, and the counterweight is going to be lowered to a position lower than a predetermined height, the locking body is locked by the stopper and the emergency stop device is An elevator apparatus that is forcedly operated to stop the counterweight.
A car that moves up and down the hoistway, a counterweight that moves up and down in the opposite direction of the car, a main rope that holds the counterweight and the counterweight, and a weight-side guide rail that guides the lifting and lowering of the counterweight An emergency stop device that is provided on the counterweight and holds the weight-side guide rail to stop the lifting of the counterweight, a lever that operates the emergency stop device, and an abnormal speed of the car In an elevator apparatus comprising a governor and a governor rope wound around the governor and connected to the lever,
While providing a locking body on the governor rope,
It is usually stored in a position that does not interfere with the locking body, and is provided with a stopper that is set at a position that can be locked with the locking body during maintenance,
When the stopper is set at a position that can be locked with the locking body, and the counterweight is going to rise to a position higher than a predetermined height, the locking body is locked by the stopper and the emergency stop device is An elevator apparatus that is forcedly operated to stop the counterweight.
5. The elevator apparatus according to claim 1, further comprising a detection switch that detects that the stopper is set at a position where the stopper can be locked with the locking body.
The elevator apparatus according to any one of claims 1 to 4, further comprising a detection switch that detects that the stopper is housed in a position where the stopper does not interfere with the locking body.