JPH07215600A - Exhaust device of elevator for automobile with cab door - Google Patents

Abstract

PURPOSE:To provide an exhaust device of an elevator for an automobile by which malfunction of an automobile position detector due to exhaust gas of an automobile is prevented so as to prevent a useless sudden stop of the elevator in the elevator for an automobile. CONSTITUTION:In an elevator cab 1 for an automobile, a gas detector 1 for detecting exhaust gas of an automobile and generating output and a fan 12 which is controlled to start and stop according to the output of the gas detector and adapted to discharge the exhaust gas of an automobile 5 to the outside of the elevator cab 1 are disposed in addition to a light source for generating a pair of beams and an photoelectric safety device 7 formed by a pair of photo sensors for receiving the beams of the light source and generating the output, whereby it is possible to prevent malfunction of a position detector of the automobile 5 due to exhaust gas.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an exhaust system for an automobile elevator having a car door installed in a multi-storey parking lot, and relates to an automobile elevator with a car door for preventing malfunction of a photocell safety device. Exhaust system.

[0002]

2. Description of the Related Art Generally, in a multi-storey car park, it is necessary to transport a vehicle in the vertical direction, and therefore, a so-called automobile elevator is installed which can transport the vehicle in the vertical direction.

As shown in FIG. 5, this automobile elevator often has no door on the side of the elevator car and is provided with only a hold door on the side of the building.

That is, in FIG. 5, reference numeral 1 denotes an elevator car for an automobile, which is moved vertically in a hoistway of a building (hall) 3 by a rope 2. Reference numeral 4 is the above-mentioned hall door provided on each floor of the hall 3, and reference numeral 5 is an automobile that has entered the elevator car 1.

A car stop 6 is provided on the floor of the elevator car 1 of the automobile elevator to prevent accidental movement of the car 5. However, due to some trouble, while the elevator car 1 is being raised or lowered, the car 1 is kept in the car 1. When the car 5 starts to move, as described above, there is no door on the side of the car 1, so the car 5 may stick out of the car 1 and hit the building 3 to cause a serious accident. For the purpose of preventing such an accident, photoelectric safety devices 7 and 7'are provided at two positions in the front and rear of the elevator car 1.

The photoelectric safety devices 7 and 7'include a pair of light sources, which are provided in the lower portion of one side surface of the elevator car 1 at a distance larger than the length of the vehicle 5 in the front-rear direction, and emit a luminous flux. A pair of photosensors (for example, a phototube or a phototransistor) which are provided on the other side surface of the elevator car 1 at a position facing the pair of light sources and separately receive the respective luminous fluxes emitted by the pair of light sources and generate outputs. Composed of and. In this case, for example, when the automobile 5 moves forward and the light flux emitted from the light source is blocked, the optical sensor cannot receive light, and the output thereof disappears. Is detected.

In this way, the photoelectric safety device 7 or 7
When the accidental movement of the automobile 5 is detected by ‘and the safety device 7 or 7 ′ is activated, the elevator is temporarily stopped (as shown in the flowchart of the automobile elevator (in the case of single-type automatic) of FIG. 4 described later). (Forcibly stopped), and a guide light (forward light, not shown) provided in the elevator car 1
Backlight / OK light) and an alarm buzzer are used to guide the driver to return the vehicle to the original prescribed position and return the vehicle to the original prescribed position, whereby the photoelectric safety device 7 or 7'is released. After that, I try to go to the nearest floor.

Reference numeral 8 denotes an operation panel for the driver of the automobile to operate the automobile elevator.

[0009]

However, recently,
In elevators for automobiles installed in multi-purpose parking lots in department stores, multipurpose buildings, etc. that are used by an unspecified number of people, for elevators that are used to transport the automobile in the vertical direction with ordinary passengers on the automobile. The number of elevators is increasing. Then, in such a case, instead of the structure of the conventional elevator for automobiles in which only the hold door 4 shown in FIG.
Car doors are often installed.

Therefore, since the inside of the elevator car 1 will be in a substantially sealed state with such a structure, the driver of the automobile in particular is instructed to stop the engine in the elevator car 1. ing. However,
Since the number of users is unspecified, some drivers move the elevator with the engine running or start the engine before the elevator car 1 stops at the landing position on the destination floor. Sometimes.

Therefore, due to the exhaust gas filling, the luminous flux from the light source is blocked, the photoelectric safety devices 7 and 7'for detecting the accidental movement of the automobile malfunction, and the elevator stops suddenly. There was a problem of doing. or,
The elevator car 1 is filled with harmful exhaust gas from the vehicle, which is unfavorable for the health of the driver and passengers of the vehicle.

The present invention has been made in view of the above circumstances, and an object of the present invention is to exhaust an elevator system for a car with a car door capable of preventing malfunction of the photoelectric safety device due to exhaust gas of the vehicle while the elevator is being lifted and lowered. To provide.

Another object of the present invention is to provide an exhaust system for an elevator for an automobile with a car door, which can prevent the harmful exhaust gas of the automobile in the elevator car from being filled.

[0014]

In order to achieve the above-mentioned object, the present invention is provided in an elevator car of an elevator for a car with a car door for carrying at least a car carrying a driver in a vertical direction. A gas detector for detecting the exhaust gas, similarly provided in the elevator car, a fan for exhausting the exhaust gas to the outside of the elevator car, and one side of the elevator car below the side surface of the automobile. A pair of light sources that emit a light beam and are provided at a distance larger than the length in the front-rear direction, and a pair of light sources that are provided on the other side surface of the elevator car so as to face each other, and the light beams emitted by the pair of light sources. A pair of optical sensors that separately receive light and generate outputs, and the fan detects the exhaust gas of the vehicle by the gas detector. And wherein the activating.

Further, the invention is characterized in that the fan is started before the concentration of the exhaust gas of the vehicle reaches a concentration that affects the operation of the optical sensor.

[0016]

[Function] The exhaust gas of an automobile is detected by the gas detector, the fan is started, the harmful exhaust gas is discharged to the outside of the elevator car, and the exhaust gas concentration is determined by the optical sensor of the photoelectric safety device. The fan is started before the concentration that affects the operation is reached to prevent malfunction of the photoelectric safety device.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a schematic side sectional view showing an embodiment of the present invention. Since the same parts as those in FIG. 5 are designated by the same reference numerals, detailed description thereof will be omitted.

In FIG. 1, 1 is an elevator car, 2 is a rope, 3 is a building (hall), 4 is a hold door, 5 is an automobile, 6 is a car, 7 and 7'are photoelectric safety devices, and 8 is a safety device. It is an operation panel. Reference numeral 10 denotes car doors provided at the front and rear of the elevator car 1. Further, when the exhaust gas 5a of the automobile 5 reaches a predetermined concentration, the car doors are operated at a low position on the side surface of the elevator car 1 to operate. A gas detector 11 that produces an output and a fan 12 that is activated by the output of the gas detector 11 and discharges the exhaust gas 5a of the automobile 5 to the outside of the elevator car 1 are provided. Although the mounting position of the fan 12 is shown at the position shown in the figure for convenience of explanation, it is actually provided on the rear floor of the elevator car 1 which is convenient for discharging the exhaust gas 5a to the outside of the elevator car 1. Is good.

FIG. 2 is a control circuit diagram for controlling the fan 12 by the gas detector 11. In FIG. 2, the exhaust gas 5a of the automobile 5 is placed between the AC control power supplies R and T.
When the concentration of reaches the planned value, the gas detector 11 operates,
The fan 12 is connected through the normally open contact 11a that is closed by the operation, and the start / stop control of the fan 12 is performed by opening / closing the normally open contact 11a.

FIG. 3 is a schematic control circuit diagram showing only the principle for controlling the elevator car 1 to be temporarily stopped when an abnormality occurs in the automobile elevator. The photoelectric safety device 7, The circuit for activating 7 ', the main circuit of the hoisting machine for raising and lowering the elevator car 1 and its control circuit, etc. are omitted.

In FIG. 3, P and N are DC control power supplies, and the elevator car 1 rises between these control power supplies P and N.
Corresponding to the normally open contact UDX which is closed during the down operation and the photoelectric safety devices 7 and 7'mounted on the side wall of the elevator car 1 when they are in operation (the light flux emitted from the light source is blocked. Normally closed contact LDS that opens when it reaches the optical sensor) and closes when it is not operating.
And a parallel circuit of LDS 'and a series circuit of the auxiliary relay LDSR are connected, and the normally closed contact LDSRb of the auxiliary relay LDSR is connected in parallel to the series circuit.
When it is excited and turned on, the automobile elevator can be operated, and when the excitation is turned off and turned off, the elevator car 1 suddenly stops, and a series circuit with an auxiliary relay CC is connected.

In the schematic control circuit diagram shown in FIG. 3, when the DC power supplies P and N are turned on, the photoelectric safety devices 7 and 7'not shown operate to open the normally closed contacts LDS and LDS '. Since the auxiliary relay LDSR is off, its normally closed contact LDSRb is closed, and therefore the auxiliary relay CC is excited and turned on, and the automobile elevator can be operated.

When a car with a driver in the elevator car 1 gets into the car, the driver operates the operation panel 8 to instruct the elevator car to operate, and the elevator car 1 starts to rise, for example, the normally open contact UDX is closed. To do. If the vehicle 5 moves backward, for example, for some reason during the raising operation of the elevator car 1 and the light flux from the light source of the photoelectric safety device 7'is blocked, the photoelectric safety device 7'becomes inoperative. ,
The normally closed contact LDS 'is closed. Therefore, the auxiliary relay LDSR is excited and turned on, and its normally closed contact LDS
Since Rb opens, the auxiliary relay CC turns off,
Elevator car 1 stops suddenly.

The above is a description of the operation of the schematic control circuit diagram shown in FIG. 3. Next, the overall operation of the automobile elevator will be described using the flowchart of the automobile elevator (in the case of single type automatic) shown in FIG. The details will be described. Note that FIG.
, S1, S2, S3, ... In indicate the steps of the operation.

Operation start Step 1: It is confirmed whether or not the exit light and the busy light of the automobile elevator are lit. (If it is on, wait until these exit lights and in-use lights are off.)

Step 2: Press the hall call button and wait for the car. (When you press the hall call button, the in-use light turns on.)

Step 3: The car arrives and the car door opens. (The forward light turns on and the alarm fuzzer starts to ring.)

Step 4: Bring the car into the car.
(If not carried in, after a certain time (45 Sec), the car door is closed, the in-use light and the forward light are turned off, the alarm fuzzer stops ringing, and the state returns to the completion state of step 1.)

Step 5: It is confirmed by the photoelectric safety device whether or not the vehicle has entered a predetermined position in the car. (If the vehicle is not in the specified position, the photoelectric safety device operates and the forward light or backward light is turned on, so the driver moves the vehicle forward or backward according to the lighting, and moves the vehicle to the specified position. When the car is in place, the OK light comes on, the alarm fuzzer stops ringing, and the forward and backward lights also go out.)

Step 6: Press the button on the destination floor of the control panel attached to the side of the elevator car. (When the button is pressed, the exit light turns on. If the button is not pressed, 45
After the Sec has elapsed, the car door starts the closing operation. The OK light goes off, and the alarm fuzzer starts ringing. When the car door is fully closed, the alarm footer stops ringing and the car waits on that floor. )

Step 7: The car door starts the closing operation. (The alarm fuzzer starts to ring.)

Step 8: Pushing the open button on the car door opens the car door again and returns to the completed state of step 6.

Step 9: The car door closing operation is completed on condition that the car door open button is not pressed (step 8). (The alarm fuzzer stops ringing.)

Step 10: When the car starts traveling (up or down) and the photoelectric safety device does not operate during traveling, the car lands on the destination floor and stops.
(When the photoelectric safety device operates and the movement of the vehicle is detected, the car pauses and the OK light goes out. The forward light or the back light goes on and the alarm fuzzer starts ringing. When the car is moved according to the lighting, and the car is returned to the predetermined position, the operation of the photoelectric safety device is canceled, the car goes to the nearest floor, and the OK light is turned on, and the forward or backward lights are turned off. , The alarm fuzzer stops ringing.) (When the car reaches the nearest floor, the car door is opened and the process returns to step 9.)

Step 11: When the car reaches the destination floor and stops, the opening operation of the car door is started and the door is fully opened. (When the door is fully opened, the alarm fuzzer starts ringing and the exit light goes out.)

Step 12: The driver starts the engine of the automobile and moves forward or backward according to the lighting of the forward light or the backward light to carry the automobile out of the car. (OK light goes off, forward light or backward light goes on.)

Step 13: Press the landing door close button. (If the close button is not pressed, the closing operation of the landing door is started after 45 Sec, and the door is fully closed.
It becomes the state of 4. )

Step 14: The closing operation of the landing door is started, and the door is fully closed. (The alarm fuzzer stops ringing,
The forward light or backward light is turned off, and the in-use light is also turned off. )

Step 15: All operations are completed and wait for the next call.

As described above, the overall operation of the automobile elevator is
Although described in detail using the flowchart, in the above description, the relationship between the concentration of the exhaust gas of the automobile 5 in which the gas detector 11 operates in the elevator car 1 and the operation sensitivity of the photoelectric safety devices 7 and 7 ' However, the gas detector 11 detects the exhaust gas before the exhaust gas concentration in the elevator car 1 affects the operation of the photoelectric safety devices 7 and 7'and reaches a concentration at which they malfunction. It goes without saying that the operation sensitivity of the gas detector 11 is selected so that the gas detector 11 operates in the following manner.

[0042]

As described above, the present invention has been described in detail. According to the present invention, a light source that emits a pair of luminous fluxes in an elevator car and a pair of optical sensors that receive the luminous fluxes of the light sources and generate an output. In addition to the configured photoelectric safety device, a gas detector that detects the exhaust gas of the automobile and produces an output, and start / stop control is performed by the output of this gas detector, and the exhaust gas of the automobile is discharged to the outside of the elevator car. A fan is installed to operate the vehicle, and when the exhaust gas of the car is detected by the gas detector, the fan is started to discharge the exhaust gas to the outside of the car, so that the harmful exhaust gas is filled into the car. (EN) An exhaust system for an elevator for a car with a car door, which can prevent and protect the health of a car driver.

Further, since the fan is started before the exhaust gas concentration of the automobile reaches the concentration that affects the operation of the optical sensor, the photoelectric safety device does not malfunction, and malfunctions occur. It is possible to prevent a sudden stop of the elevator car due to the above, and it is possible to provide an exhaust system for an elevator for a car with a car door, which greatly improves both serviceability and safety.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view showing an embodiment of the present invention.

FIG. 2 is a control circuit diagram for controlling a fan by a gas detector.

FIG. 3 is a schematic control circuit diagram showing only the principle for performing control for temporarily stopping the elevator car 1 when an abnormality occurs in an automobile elevator.

FIG. 4 is a flowchart of an automobile elevator (in the case of a single automatic system).

FIG. 5 is a schematic side sectional view of a conventional car elevator without a car door.

[Explanation of symbols] 1 elevator car 2 rope 3 building (hall) 4 hold door 5 automobile 6 car stop 7 photoelectric safety device 7'photoelectric safety device 8 operation panel 10 car door 11 gas detector 12 fan

Claims (2)

[Claims] 1. A gas detector provided in an elevator car for a car with a car door that carries at least a driver's vehicle up and down, and a gas detector for detecting exhaust gas from the car, and the elevator car in the same manner. A fan for discharging the exhaust gas to the outside of the elevator car provided inside, and provided at a lower part of one side surface of the elevator car with a distance larger than the length in the front-rear direction of the vehicle, From a pair of light sources that emit light, and a pair of optical sensors that are provided at opposite positions of the pair of light sources on the other side surface of the elevator car, and that individually receive the respective light fluxes emitted by the pair of light sources and generate outputs. The vehicle electric vehicle equipped with a car door is characterized in that the fan is started when the exhaust gas of the vehicle is detected by the gas detector. Beta exhaust system. 2. The exhaust system for a car door elevator according to claim 1, wherein the fan is started before the exhaust gas concentration of the vehicle reaches a concentration that affects the operation of the optical sensor.