CN100379668C - Elevator device - Google Patents

Abstract

The invention provides an elevator device, comprising: a stop pin (10), the stop pin (10) is inserted into a counterweight (6) connected to an elevator car (4) through a sling (5) and a counterweight guide rail (7) Among them, the elevator car (4) is braked mechanically; the maintenance workbench (3), the maintenance workbench (3)' is put away during normal operation, and is assembled on the elevator car during maintenance work. (4) lifting area; when the stop pin (10) is not inserted into the counterweight (6) and the counterweight guide rail (7), the electric lock (13) that locks the maintenance workbench (3) in the stowed position; When the maintenance workbench (3) is not put away, the stop pin (10) is locked in the electric lock (16) in the counterweight (6) and the counterweight guide rail (7). In the state where the balance weight (6) is not mechanically fixed, it cannot be overhauled, and the mechanical fixation cannot be disabled during the overhaul. Thereby, the safety at the time of inspection work can be improved.

Description

Elevator device

technical field

The present invention relates to an elevator device, in particular to an elevator device capable of ensuring the safety of operators when performing inspection and maintenance operations in an elevator hoistway.

Background technique

In an elevator without a machine room, since the control panel cannot be placed in the machine room, the control panel is generally placed in the hoistway. When the equipment in the elevator pit in the elevator hoistway is inspected and repaired within the reach of hands, in order to ensure that the maintenance personnel can perform maintenance, it is necessary to set up a workbench for inspection.

However, the hoistway is a space for the elevator car to ascend and descend. If a fixed inspection workbench is provided, the inspection workbench may collide with the elevator car, thereby damaging the machinery and equipment. For this reason, the maintenance workbench generally does not adopt the fixed type but the folding type. When the elevator is running, the maintenance workbench can be folded and packed up, and it is only assembled when the maintenance operation is used.

In the above structure, when the maintenance workbench is assembled and installed, if the elevator operates, the elevator car will collide with the maintenance workbench, thereby damaging the machine equipment. In addition, if the operator happens to be performing maintenance work on the maintenance workbench at this time, it will also cause work-related accidents for the operator.

In order to prevent damage to machinery and equipment and maintenance personnel from being injured, it is necessary to stop the elevator when the workbench for inspection is installed. For this reason, a detection device was installed in the previous elevator device to detect the workbench for inspection. Whether it is in an assembled state or in a retracted state, and switch the elevator to a stop mode or a running mode according to the detection result (for example, patent document 1).

Patent Document 1: Japanese Patent Laid-Open No. 2001-199647 (pages 2 to 3, Figures 1 to 3)

In the above method, the movement of the elevator car can only be restricted electrically during the maintenance work. Therefore, if there is any interference, or a third party compulsorily contacts the elevator car without knowing that the operator is performing the maintenance work When the power is turned on, it may not be possible to ensure that the elevator is in a stopped state.

Contents of the invention

An object of the present invention is to provide an elevator apparatus having a mechanism for fundamentally restricting the movement of an elevator car in order to improve safety during inspection work.

Another object of the present invention is to provide an elevator apparatus having an interlock function capable of preventing the above mechanism from being disabled due to erroneous operations.

In order to achieve the above object, the present invention proposes an elevator device, which has a stop pin that is inserted into a counterweight connected to the elevator car through a sling and a counterweight guide rail to mechanically fix the elevator car. , fixing the counterweight in a state where the elevator car stops at the highest floor.

The elevator installation can have a switch which stops the elevator car when the locking pin is inserted into the counterweight and the counterweight guide rail.

In addition, the elevator device may also have a workbench for inspection and a switch. The workbench for inspection is retracted during normal operation and assembled in the lifting area of the elevator car during inspection work. The switch is not retracted for inspection. Stopping the elevator car while working on the platform.

In the present invention, since a device for mechanically braking the elevator car is provided when it is inserted into the counterweight connected to the elevator car through the sling and the counterweight guide rail, even if there is any disturbance during the operation, Or when a third party forcibly turns on the power supply without knowing that the operator is performing maintenance work, it can also ensure that the elevator is in a stopped state.

In order to achieve the above-mentioned another object, the present invention proposes an elevator device, the elevator device is provided with a stop pin inserted into a counterweight connected to the elevator car through a sling and a counterweight guide rail to mechanically lock the elevator car. The car is fixed; the workbench for inspection, the workbench for inspection is retracted during normal operation, and assembled in the lifting area of the elevator car during maintenance work; the electric lock, when the stop pin is not inserted into the counterweight and the counterweight guide rail , the electric lock locks the maintenance workbench in the stowed position.

The present invention also proposes an elevator device, the elevator device is provided with a stop pin, and the stop pin is inserted into a counterweight connected to the elevator car through a sling and a counterweight guide rail to mechanically fix the elevator car; platform, the maintenance workbench is put away during normal operation, and assembled in the lifting area of the elevator car during maintenance work; electric lock, when the maintenance workbench is not put away, the electric lock locks the stop pin on the balance Hammer and counterweight guide rail.

The present invention also proposes an elevator device, the elevator device is provided with a stop pin, and the stop pin is inserted into a counterweight connected to the elevator car through a sling and a counterweight guide rail to mechanically fix the elevator car; The maintenance workbench is retracted during normal operation, and assembled in the lifting area of the elevator car during maintenance operations; when the stop pin is not inserted into the counterweight and the counterweight guide rail, the maintenance workbench is locked in the retracted Electric lock in raised position; electric lock to lock stop pin in counterweight and counterweight guide rail when service platform is not stowed.

Any of the elevator devices described above may be provided with a switch that stops the elevator car when the stop pin is inserted into the counterweight and the counterweight guide rail.

Furthermore, any of the above-mentioned elevator devices may have a switch for stopping the operation of the elevator car when the inspection workbench is not retracted.

Equipped with an electric lock that locks the inspection table in the stowed position when the stopper pin is not inserted into the counterweight and counterweight guide, assembly cannot be performed without inserting the stopper pin into the counterweight and counterweight guide Workbench for maintenance.

Since there is an electric lock that locks the stopper pin in the counterweight and the counterweight guide rail when the inspection workbench is not stowed, the stopper pin cannot be pulled out unless the inspection workbench is stowed.

As a result, there is no need to worry about the failure of the brake mechanism due to misoperation.

According to the present invention, the elevator car can be braked mechanically during inspection work on the control panel.

As long as the stopper pin is not inserted into the counterweight and the counterweight guide rail, the maintenance workbench cannot be assembled. That is, since the inspection work cannot be performed unless the elevator car is braked mechanically, safety can be ensured.

When the workbench for inspection is assembled and used for inspection, since the stopper pin is in a fixed state, the stopper pin will not fall off, and even if you try to pull out the stopper pin by mistake, you cannot pull out the stopper pin , so security can be ensured.

In addition, since the stopper pin cannot be pulled out in the assembled state of the inspection workbench, it is also possible to prevent the occurrence of forgetting to put the inspection workbench away.

Description of drawings

Fig. 1 is a side view showing the configuration of an embodiment of an elevator apparatus according to the present invention.

Fig. 2 is a circuit diagram showing an example of the circuit configuration of the embodiment of the elevator apparatus of the present invention.

In the figure: 1-elevator lifting channel, 2-control panel, 3-workbench for maintenance, 4-elevator car, 5-main sling, 6-counterweight, 7-counterweight guide rail, 8-rope sheave, 9 - pulley, 10 - stop pin, 11 - switch, 12 - switch, 13 - electric lock, 14 - switch, 15 - switch, 16 - electric lock, 17 - relay.

Detailed ways

Embodiments of the elevator apparatus of the present invention will be described below with reference to FIGS. 1 and 2 .

Fig. 1 is a side view showing the configuration of an embodiment of an elevator apparatus according to the present invention.

In the elevator without the machine room shown in FIG. 1 , the control panel 2 and the inspection workbench 3 are installed in the hoistway 1 of the elevator. One end of the main sling 5 wound on the sheave 8 and the pulley 9 hangs the elevator car 4 , and the other end hangs the counterweight 6 guided by the counterweight guide rail 7 .

The counterweight 6 and the counterweight guide rail 7 are provided with openings for inserting the stop pins 10 for fixing the elevator car 4 .

A switch 11 and a switch 12 are provided in the action area of the stop pin 10. When the stop pin 10 starts to be inserted into the counterweight 6 and the counterweight guide rail 7, the switch 11 is turned off. When the stop pin 10 is fully inserted into the counterweight 6 and the counterweight When in the guide rail 7, the switch 12 is communicated.

In addition, an electric lock 13, a switch 14 and a switch 15 are arranged in the action area of the maintenance workbench 3. When the contacts of the switch 12 are connected, the electric lock 13 is opened so that the maintenance workbench 3 can be taken out. When the platform 3 is put away, the switch 14 is connected, and the switch 15 is disconnected.

And, in the action zone of stop pin 10, electric lock 16 is arranged, and when the contact of switch 15 is in connected state, electric lock 16 is blocked, and stop pin 10 can't be pulled out.

And, the position 4a when the elevator car is on the bottom floor indicates that if the elevator car 4 goes up and down in the state where the inspection workbench 3 is not retracted, a collision will occur between the inspection workbench 3 and the elevator car 4 .

Fig. 2 is a circuit diagram showing an example of a circuit configuration of an embodiment of the elevator apparatus of the present invention.

In Fig. 2, when the switch 11 is in the connected state, and the switch 14 is also in the connected state, the relay 17 for switching between running and stopping the elevator is in an excited state, and the elevator can travel. When the switches 11 and 14 are in a state other than the above states, the relay 17 is in a demagnetized state, and the elevator stops.

After the switch 12 is connected, the electric lock 13 is excited and opened, so that the workbench 3 for inspection can be taken out.

When the contact of the switch 15 is in the conduction state, the electric lock 16 is excited, and the stop pin 10 is locked and cannot be pulled out.

When the operator inspects the control panel 2, the elevator car 4 is stopped at the highest floor. Thereafter, enter the elevator pit of the lifting passage 1, and insert the stop pin 10 into the opening of the counterweight 6 and the opening of the counterweight guide rail 7.

At this time, when the insertion starts, the switch 11 is turned off, the relay 17 is demagnetized, and the elevator is stopped electrically. As a result, the elevator car 4 can be electrically braked first.

After the stop pin 10 is fully inserted into the opening of the counterweight 6 and the opening of the counterweight guide rail 7, the elevator car 4 can be mechanically braked.

And, after fully inserted, the contacts of the switch 12 are connected, the electric lock 13 is excited and opened, and the workbench 3 for inspection can be taken out at this time.

After the operator assembles the workbench 3 for inspection, since the workbench 3 for inspection is separated from the switch 14, the contact of the switch 14 is disconnected, and the relay 17 is double-disconnected by the switch 11 and the switch 14, so the electrical method is further improved. Disconnected security.

After the maintenance workbench 3 is assembled, since the maintenance workbench 3 is separated from the switch 15, the contact of the switch 15 becomes connected, and the electric lock 16 is excited and locked, and the stop pin 10 cannot be pulled out this moment.

In this state, the operator can safely climb onto the assembled maintenance workbench 3 to perform maintenance work on the control panel.

After the maintenance work is finished, after the operator puts away the workbench 3 for maintenance, the contacts of the switch 14 are connected, and the relay 17 is in the disconnected state only by the switch 11 .

In addition, when the maintenance workbench 3 is put away, the contact of the switch 15 is opened, and the electric lock 16 is demagnetized and opened, and the stop pin 10 can be pulled out at this time.

When the operator starts to pull out the stop pin 10, the contact of the switch 12 is disconnected, and the electric lock 13 is demagnetized and locked, and the maintenance workbench 3 cannot be taken out this moment.

After pulling out completely, the contact point of switch 11 becomes connected state, and relay 17 is excited, and elevator is in the state that can travel.

According to this embodiment, the elevator car can be braked not only electrically but also mechanically when the control panel is inspected.

In addition, if the stopper pin 10 is not inserted into the counterweight 6 and the counterweight guide rail 7, the inspection workbench 3 cannot be assembled. Therefore, when the elevator car is not mechanically braked, the inspection work cannot be performed, so safety can be ensured. .

And when the maintenance workbench 3 is assembled and used for maintenance work, since the stop pin 10 is fixed, the stop pin 10 will not fall off, so even if there is a misoperation to extract the stop pin 10, it cannot be pulled out. Out stop pin 10, so can guarantee safety.

In addition, since the stopper pin 10 cannot be pulled out in the assembled state of the inspection table 3 , it is possible to prevent forgetting to store the inspection table 3 .

Claims (8)

1. A kind of elevator device, it is characterized in that, has stop pin, and this stop pin is inserted in the counterweight that is connected with elevator car by sling and in the counterweight guide rail, described elevator car is fixed mechanically, in described The counterweight is fixed while the elevator car is stopped at the highest floor. 2. The elevator apparatus according to claim 1, further comprising a switch for stopping the elevator car when the stopper pin is inserted into the counterweight and the counterweight guide rail. 3. Elevator installation according to claim 1 or 2, characterized in that it has: a workbench for inspection, the workbench for inspection is retracted during normal operation, and assembled in the lifting area of the elevator car during maintenance work, A switch for stopping the operation of the elevator car when the inspection workbench is not retracted. 4. The elevator installation according to claim 1, characterized in that it has: A workbench for inspection, which is retracted during normal operation and assembled in the lifting area of the elevator car during maintenance operations; When the stop pin is not inserted into the counterweight and the counterweight guide rail, an electric lock that locks the maintenance workbench in the stowed position; An electric lock that locks the stop pin in the counterweight and the counterweight guide rail when the maintenance workbench is not retracted. 5. An elevator device, characterized in that it has: a stop pin, the stop pin is inserted into the counterweight connected to the elevator car through a sling and the counterweight guide rail, and mechanically fixes the elevator car; A workbench for inspection, which is retracted during normal operation and assembled in the lifting area of the elevator car during maintenance operations; An electric lock, when the stop pin is not inserted into the counterweight and the counterweight guide rail, the electric lock locks the maintenance workbench in the stowed position. 6. The elevator apparatus according to claim 5, further comprising a switch for stopping the elevator car when the stopper pin is inserted into the counterweight and the counterweight guide rail. 7. An elevator device, characterized in that it has: a stop pin, the stop pin is inserted into the counterweight connected to the elevator car through a sling and the counterweight guide rail, and mechanically fixes the elevator car; A workbench for inspection, which is retracted during normal operation and assembled in the lifting area of the elevator car during maintenance operations; An electric lock, which locks the stop pin in the counterweight and the counterweight guide rail when the maintenance workbench is not put away. 8. The elevator apparatus according to claim 7, further comprising a switch for stopping the operation of the elevator car when the inspection workbench is not retracted.

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