JP2008207942A - Elevator device and elevator system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device having no fear that objects connected to both ends of a string-like article is pulled even if a car is lifted in such a state that the string-like article is nipped by a door abutment part of a door. <P>SOLUTION: The elevator device is provided with a door for opening/closing an elevator exit/entrance in a horizontal direction; and string-like article detection sensors for stopping the elevator when the sensor contacts the string-like article 5 moving between the door abutment parts in a vertical direction to detect the string-like article in such a state that the sensors are provided above and below the door abutment part in full-closure of the door and they are held nipped by the door abutment parts during lifting up/down of the car 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator apparatus in which there is no fear that a target connected to both ends of a string-like object will be pulled even if the cage moves up and down while the string-like object is sandwiched between door doors. is there.

  A conventional elevator door safety device is provided with a roller and an operating piece that run in the groove of the sill at the lower end of a sensor made of a safety shoe that detects an obstacle installed on the front end side of the door. It is possible to detect a string-like object such as a pet lead typified by a dog string lying on the sill, and foreign matters such as dust and dirt accumulated in the groove of the sill. In such a door safety device, although the operation efficiency of the elevator is reduced when the detection of dust and dirt accumulated in the groove of the sill frequently occurs, the safety at the time of opening and closing the door is ensured (for example, Patent Document 1 and Patent Document 2).

JP-A-5-132276 JP-A-5-301692

  However, in the conventional elevator door safety device, the door closes without detecting a string-like object that is easily deformed or a thin object without being cut, and the object connected to both ends of the string-like object is the elevator. In some cases, the doors are separated by the door to the car side that goes up and down and the landing side that doesn't go up and down. In this case, there is a risk that the thin string-like object will come into contact with the hoistway wall and other fixed devices of the elevator due to the raising and lowering of the cage, and the object connected to both ends of the string-like object may be pulled by this contact point. .

  The present invention has been made to solve the above-described problems. The object of the present invention is to provide a string-like object even when the cage is lifted and lowered while the string-like object is sandwiched between the door contacts of the door. It is providing the elevator apparatus which does not have a possibility that the object connected to the both ends of this may be pulled.

  An elevator apparatus according to the present invention is provided with a door that opens and closes an elevator door in a horizontal direction, and a cage that is provided above and below a door contact portion when the door is fully closed, and is sandwiched between the door contact portions. And a string-like object detection sensor for stopping the elevator when the string-like object is detected by coming into contact with the string-like object moving vertically between the door stop portions by moving up and down.

  The present invention provides a door that opens and closes an elevator doorway in a horizontal direction, and is provided above and below a door contact portion when the door is fully closed, and the cage moves up and down while being sandwiched between the door contact portions. And a string-like object detection sensor for stopping an elevator when the string-like object is detected by contact with a string-like object that moves in the vertical direction between the door-contact portions. Even if the cage moves up and down while the string-like object is sandwiched between the contact portions, it is possible to provide an elevator apparatus that does not cause the object connected to both ends of the string-like object to be pulled.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is an overall configuration diagram of an elevator apparatus according to Embodiment 1 of the present invention, in which a dog on a cage side connected to a dog string and an owner on a landing side are separated by an elevator door, and the cage is moved up and down. FIG. 2 is a schematic perspective view of the elevator apparatus according to the first embodiment of the present invention as seen from the entrance / exit side, and FIG. 3 is a schematic view of the elevator apparatus according to the first embodiment of the present invention. FIG. 4 is a longitudinal sectional view of the lower part of the entrance / exit side, showing a state in which a string-like object is sandwiched between the cage doors, and FIG. 4 is a longitudinal sectional view of the entrance / exit of the cage of the elevator apparatus according to Embodiment 1 of the present invention. FIG. 5 is a longitudinal sectional view of a main part showing a lower part of a car doorway of the elevator apparatus according to Embodiment 1 of the present invention, and is a view showing a state immediately before the car door is fully closed, and FIG. 6 is an elevator according to Embodiment 1 of the present invention. A fragmentary vertical cross-sectional view showing the entrance bottom of basket location is a diagram showing a state in which the lower string-like object detection sensor is pushed upward to fully closed Kagodoa. FIG. 7 is a longitudinal sectional view of a main part showing a lower part of the car doorway of the elevator apparatus according to Embodiment 1 of the present invention, and shows a state immediately before the string-like object is detected by the lower string-like object detection sensor. FIG. 8 is a longitudinal sectional view of a main part showing a lower part of the entrance / exit of the cage of the elevator apparatus according to Embodiment 1 of the present invention, and shows a state in which a string-like object is detected by a lower string-like object detection sensor; 9 is an enlarged view of a main part of FIG. 7 and shows a state immediately before the string-like object is detected by the lower string-like object detection sensor. FIG. 10 is an enlarged view of the main part of FIG. FIG. 11 is a diagram showing a state where a string-like object is detected by the string-like object detection sensor, and FIG. 11 is a timing chart for explaining a control method by the string-like object detection sensor of the elevator apparatus according to Embodiment 1 of the present invention; Is the fact of this invention Is a flow chart for explaining the operation of the elevator system to be adapted to the elevator apparatus according to Embodiment 1.

  1 to 3, 1 is a hoistway, 2 is a landing, 3 is an elevator car, and 4 is a car door formed of a panel. FIG. 1 shows that after only a dog connected to a string-like object 5 made of a dog string gets into the cage 3, the cage door 4 closes and the cage 3 moves up and down with the string-like object 5 sandwiched between the door-to-door portions. It shows the state. At this time, both ends of the string-like object 5 are connected to the owner left on the predetermined floor (A floor) and the dog in the basket 3, and one wall of the hoistway or other fixed device (not shown) of the elevator. And the like, the tension is applied to move the doors between the doors 4 of the car door 4 in the direction opposite to the elevator lifting / lowering direction.

  In FIG. 4, a cage door rail 6 is provided in the horizontal direction above the entrance / exit of the cage 3. The cage door 4 is suspended and guided by the cage door rail 6 via the cage door hanger 7 and opens and closes in the horizontal direction. A cage door shoe 8 is provided at the lower edge of the cage door 4 and fits in a groove 9a of a cage sill 9 provided in the lower portion of the entrance of the cage 3 and smoothly slides while suppressing movement before and after the entrance. . In addition, a wedge-shaped upper string-like object detection sensor 10 and a lower string-like object detection sensor 11 in which the upper string-like object detection sensor 10 is turned upside down are arranged above and below the door stop when the cage door 4 is fully closed. Has been. Cutout portions for avoiding interference with the string-like object detection sensors 10 and 11 when the door is closed are formed at the upper and lower portions of the door contact portion of the cage door 4.

  4 to 10, the lower string-like object detection sensor 11 is provided in the horizontal center of the groove 9a of the cage sill 9 via the spring mechanism 12a. Usually, the groove 9a of the cage sill 9 is formed by the spring mechanism 12a. It is arrange | positioned so that it may be pulled by the bottom face side and may not protrude to the entrance / exit center side rather than the vertical surface of the cage door 4 (refer FIG. 5). Further, the cage door shoe 8 is provided with lower sensor push-out plates 13a and 13b that protrude toward the door and form a wedge shape corresponding to the lower string-like object detection sensor 11 as a pair. When the cage door 4 is closed, the lower string-like object detection sensor 11 resists the restoring force of the spring mechanism 12a via the rollers 14a and 14b provided on the inclined surfaces of the lower sensor push-out plates 13a and 13b. It has the structure which is extruded and protrudes in the entrance / exit center side rather than the vertical surface of the cage door 4 (refer FIG. 6). A first contact 16a composed of a pair of contact bars that are connected to the signal line 15a and arranged vertically is fixed to the bottom surface of the hollow portion of the sensor body 11a of the lower string-like object detection sensor 11. Above these first contacts 16a, a receiving plate 18a fixed to the bottom surface of the hollow portion of the sensor body 11a via a compression spring 17a that is easier to deform than the spring mechanism 12a moves in a direction perpendicular to the sensor body 11a. It is provided as possible. The receiving plate 18a normally has an upper end housed in a notch on the upper surface of the sensor body 11a, and an upper surface disposed on the same plane as the upper surface of the sensor body 11a. Further, a second contact point 19a including a contact point that forms a gap of a reference movement amount with the first contact point 16a is provided at a portion of the lower surface of the receiving plate 18a facing the first contact point 16a. The first contact 16a and the second contact 19b are configured to conduct a predetermined numerical current when they come into contact with each other. The signal line 15a may be connected to the second contact 19a.

  In the lower string-like object detection sensor 11 configured in this manner, the string 3 moves vertically downward between the door-stop portions by raising the cage 3 while being sandwiched between the contact portions of the cage door 4. The object 5 and the receiving plate 18a come into contact with each other and are pressed by pressure to move a predetermined reference movement amount. As a result, the first contact 16a and the second contact 19a come into contact, and a predetermined numerical current is conducted between the second contacts 19a (see FIG. 8 and FIG. 10). A sensor signal notifying the detection of the string-like object 5 is transmitted to the elevator control panel (not shown) via the signal line 15a. Upon receiving the sensor signal, the control panel issues an elevator operation instruction after the string-like object 5 is detected by the lower string-like object detection sensor 11. In addition, the upper string-like object detection sensor 10 that is vertically inverted with respect to the lower string-like object detection sensor 11 also has a sensor body 10a, a signal line 15b, a first contact 16b, a compression spring 17b, and a backing plate 18b that have the same function. The second contact point 19b is provided at the center in the horizontal direction of the cage door rail 6 via the spring mechanism 12b (see FIG. 4). When the cage door 4 is closed, the upper string-like object detection sensor 10 is pushed out to the upper sensor push-out plates 20a and 20b provided on the cage door hanger 7 through the rollers 21a and 21b. It will protrude to the center side. In other words, the string-like object detection sensors 10 and 11 are connected to the string-like object 5 that moves in the vertical direction between the door-to-door portions as the cage 3 moves up and down while being sandwiched between the door-to-door portions of the cage door 4. The string-like object 5 can be detected by contact. The elevator can be controlled by the sensor signal. In addition, when the extrusion amount of the string-like object detection sensors 10 and 11 is set and adjusted to be small so as not to come into contact with the cage door 4, the notch portion of the cage door 4 is unnecessary.

  Next, a method for controlling the elevator by the string-like object detection sensors 10 and 11 of the elevator apparatus according to Embodiment 1 of the present invention will be described using the timing chart of FIG. FIG. 11A shows a sensor signal transmitted when the string-like object detection sensors 10 and 11 detect the string-like object 5, and FIG. 11B shows the string-like object detection sensors 10 and 11 while the elevator travels. FIG. 11 (c) shows a state where the string-like object 5 is continuously detected by the string-like object detection sensors 10 and 11 before the elevator running (stopped). The sensor post-detection process of the elevator traveling speed pattern when the string-like object 5 is continuously detected during the period is shown. As shown in FIG. 11 (a) and FIG. 11 (b), the elevator stopped on the A floor starts to travel between the A + 1 floor and the A-1 floor, and gradually increases the speed to reach a constant speed. Thereafter, when the sensor signal exceeds the predetermined string-like object detection check time ΔT and maintains High, the elevator immediately decelerates the speed and shifts to the stop state. Thereafter, the elevator travels at a low speed and returns to the original floor A before the start of traveling. Then, the car door 4 is opened at a low speed, and the car door 4 is fully opened, and the situation determination is performed by using the other safety sensors and the string-like object detection sensors 10 and 11 which are conventional obstacle sensors provided in the car door 4 device. Is done. Even if the sensor signal exceeds the string-like object detection check time ΔT and maintains High before the elevator reaches a constant speed, the elevator immediately decelerates the speed immediately, stops, reverses and runs at a low speed. Return to the A floor. In addition, as shown in FIGS. 11 (a) and 11 (c), when the elevator is stopped on the A floor, the sensor signal exceeds the string-like object detection check time ΔT and remains high. Of course, the elevator does not travel, and normally travels between the A + 1 floor and the A-1 floor after the sensor signal becomes Low.

  Next, the operation of the elevator system applied to the elevator apparatus of the present invention will be described with reference to FIG. When the cage door 4 of the cage 3 stopped on a certain floor is in a fully open state, when a door closing command is received from the control panel (step S1) and the fully closed condition of the cage door 4 is satisfied (step S2), the string shape The object detection sensors 10 and 11 are arranged so as to be accommodated in the cutout portion of the cage door 4, and the setting to the operation position is completed (step S3). In step S4, the string-like object detection sensors 10, 11 are checked for ON / OFF, and if the sensor signal is Low and no other obstacle is detected by other safety sensors, a traveling command is issued to the elevator ( Step S5). At this time, the string-like object detection sensors 10 and 11 are continuously checked for ON / OFF (step S6), but if the sensor signal is kept low, the elevator travel is also maintained (step S7). ). Thereafter, the basket 3 arrives at the target floor (step S8), and a door opening command is issued (step S9). Next, it is confirmed that the string-like object detection sensors 10, 11 are OFF (step S10), and the operation of the elevator system is finished.

  On the other hand, if the sensor signal exceeds the string-like object detection check time ΔT in Step S4 and maintains High, the elevator maintains a stopped state without traveling (Step S11). Then, the operation of step S12 is not performed, and the process proceeds to step S13, where a door opening command at a low speed is issued, and a warning announcement for notifying the detection of the string-like object 5 sounds. Thereafter, in step S14, all the safety sensors including the string-like object detection sensors 10 and 11 are checked in a state where the fully open state holding timer of the cage door 4 is not started in order to secure the opening time of the string-like object 5, and for a certain period of time. , Obstacles such as the string-like object 5 are detected. If no obstacle such as the string-like object 5 is detected in all the safety sensors within a certain time, it is determined that all the obstacles including the string-like object 5 have been removed, and a fully open state holding timer is started. (Step S15). Then, after a predetermined time has elapsed, a door closing command is issued at a low speed (step S16), and the operation described above is performed by returning to step S2.

  On the other hand, if it is difficult to remove the obstacle such as the string-like object 5 in step S14 and the obstacle such as the string-like object 5 is detected by any of the safety sensors even after a certain period of time, It is determined that there has been a situation where it is impossible for the elevator user to remove the obstacle, and an abnormal warning consisting of the highest level warning is issued together with a warning announcement of the occurrence of an abnormal situation (step S17). Due to this abnormal report, the maintenance management department is informed that an expert needs to be dispatched immediately and countermeasures are taken, and the use of the elevator itself is prohibited to ensure safety (step S18).

  If the sensor signal exceeds the string-like object detection check time ΔT and remains high when the elevator is in a traveling state in step S6, the elevator travel is stopped (step S11) and returned to the original floor. The regression low-speed driving consisting of the reverse low-speed driving is started (see step S12, FIG. 11). After the elevator returns to the original floor, the operations in steps S13 to S18 described above are performed.

  According to the first embodiment described above, the object connected to both ends of the string-like object 5 even when the cage 3 is moved up and down while the string-like object 5 is sandwiched between the door-contact portions of the cage door 4. There is no fear of being pulled. Further, unlike the conventional elevator door safety device, the string-like object 5 is detected in distinction from dust and dirt accumulated in the groove 9a of the cage sill 9, so that the operation efficiency of the elevator is not lowered. Furthermore, since an abnormal alarm is issued when the string-like object 5 or the like is detected by any safety sensor even after a certain time has elapsed, a safe elevator system can be constructed. Needless to say, the string-like object detection sensors 10 and 11 can detect any string-like object 5 such as a string, a rope, a pet lead, and a rope.

Embodiment 2. FIG.
Although not shown, in Embodiment 2, the same string-like object detection sensor as that in Embodiment 1 is provided on the landing side. That is, the string-like object detection sensors are arranged above and below the door stop when the landing door is fully closed. These string-like object detection sensors are respectively provided in the center in the horizontal direction of the landing door rail and the landing sill groove via a spring mechanism. These string-like object detection sensors are pushed out to sensor push-out plates provided on the landing door hanger and the landing door shoe, respectively, when the landing door is closed. In this case, the string-like object sandwiched between the door contact portions of the landing doors is detected by moving in the same direction as the elevator moving direction and contacting the receiving plate of the string-like object detection sensor.

  In the first embodiment and the second embodiment, the center opening type door called the normal CO type has been described. However, it is needless to say that the present invention can be applied to the single opening type door called the S type. In this case, a string-like object detection sensor may be provided in each of the upper door rail and the lower door sill groove when the door is fully closed, which includes the door door surface and the door door pillar.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole elevator apparatus block diagram in Embodiment 1 of this invention, Comprising: The state where the dog on the cage side connected to the dog string and the owner on the landing side are separated by the door of the elevator and the cage moves up and down It is a longitudinal cross-sectional view shown. It is the typical perspective view which looked at the cage | basket | car of the elevator apparatus in Embodiment 1 of this invention from the entrance / exit side. It is a longitudinal cross-sectional view of the lower part of the elevator door in the elevator apparatus in Embodiment 1 of this invention, Comprising: It is a figure which shows the state in which the string-like object is pinched | interposed into the cage door. It is a longitudinal cross-sectional view of the entrance / exit of the cage | basket | car of the elevator apparatus in Embodiment 1 of this invention. It is a principal part longitudinal cross-sectional view which shows the cage | basket entrance-and-exit lower part of the elevator apparatus in Embodiment 1 of this invention, Comprising: It is a figure which shows just before a cage door is fully closed. It is a principal part longitudinal cross-sectional view which shows the entrance lower part of the cage of the elevator apparatus in Embodiment 1 of this invention, Comprising: It is a figure which shows the state by which the lower string-like object detection sensor was extruded upwards when the cage door was fully closed. It is a principal part longitudinal cross-sectional view which shows the cage | basket entrance lower part of the elevator apparatus in Embodiment 1 of this invention, Comprising: It is a figure which shows the state just before a string-like object is detected by a lower string-like object detection sensor. It is a principal part longitudinal cross-sectional view which shows the cage entrance lower part of the elevator apparatus in Embodiment 1 of this invention, Comprising: It is a figure which shows the state by which the string-like object was detected by the lower string-like object detection sensor. It is a principal part enlarged view of FIG. 7, Comprising: The figure which shows the state just before a string-like object is detected by a lower string-like object detection sensor It is a principal part enlarged view of FIG. 8, Comprising: It is a figure which shows the state by which the string-like object was detected by the lower string-like object detection sensor. It is a timing chart for demonstrating the control method by the string-like object detection sensor of the elevator apparatus in Embodiment 1 of this invention. It is a flowchart for demonstrating operation | movement of the elevator system applied to the elevator apparatus in Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Platform 3 Basket 4 Basket door 5 String object 6 Basket door rail 7 Basket door hanger 8 Basket door shoe 9 Basket sill 9a Groove 10 Upper string object detection sensor 10a Sensor body 11 Lower string object detection sensor 11a Sensor body 12a, 12b Spring mechanisms 13a, 13b Lower sensor push plates 14a, 14b Rollers 15a, 15b Signal lines 16a, 16b First contacts 17a, 17b Compression springs 18a, 18b Receiving plates 19a, 19b Second contacts 20a, 20b Upper sensor push plates 21a 21b Roller

Claims (6)

A door that opens and closes the elevator door horizontally,
A string that is provided above and below the door stop when the door is fully closed, and moves vertically between the door stops when the cage moves up and down while being sandwiched between the door stops. A string-like object detection sensor that stops an elevator when the string-like object is detected in contact with an object;
An elevator apparatus comprising:   The string-like object detection sensor is provided on the door rail and normally does not protrude toward the center of the elevator doorway, and is pushed out by the pushing plate provided on the door hanger when the door is closed and protrudes toward the center side of the elevator doorway. The elevator apparatus according to claim 1.   The string-like object detection sensor is provided in the groove of the door sill and normally does not protrude toward the elevator entrance central side, but is pushed out by the push plate provided on the door shoe when the door is closed, and the elevator entrance central side The elevator apparatus according to claim 1, wherein the elevator apparatus projects. The string-like object detection sensor
A sensor body;
A receiving plate provided to be movable in a vertical direction with respect to the sensor body;
With
The said string-like object is detected when the said receiving plate is compressed with the pressure by a string-like object, and moves the predetermined reference | standard movement amount, The string-like object is detected in any one of Claims 1-3 characterized by the above-mentioned. Elevator device. The sensor body has a first contact,
The backing plate includes a second contact that forms a gap of a reference movement amount with the first contact,
When the backing plate is pressed by the string-like object, the first contact and the second contact come into contact with each other, and a predetermined current value that is conducted to the signal line connected to the first contact or the second contact is determined. The elevator apparatus according to claim 4, wherein a string-like object is detected as a reference.   If the string-like object is detected even after a certain period of time has passed after the elevator stopped after detecting the string-like object is returned to the floor before the start of travel and the door is opened, go to the maintenance department The elevator system according to any one of claims 1 to 5, wherein the elevator system is communicated.

Images