JP4946027B2 - Elevator equipment - Google Patents

Description

The present invention relates to an elevator apparatus provided with a squirrel position detecting device for detecting the position of the car in the elevator shaft.

  A car position detection device that detects the position of a car that moves up and down in an elevator hoistway is provided on a hoistway fixing body such as a guide rail, a building beam, or a hoistway wall in the hoistway via a bracket or an attachment arm. A plurality of landing plates, and a detection device that is provided in a car that moves up and down in the hoistway, and that detects the landing plates by a detection plate that is disposed so as to face each landing plate from both sides when the car is raised and lowered. And a detection switch that detects the swing of the detection plate and controls the raising / lowering operation of the car, so that when the landing plate deviates from the normal position due to an earthquake, There has been proposed one that detects the swing of the detection plate caused by the collision and stops the car in the hoistway (see, for example, Patent Document 1).

JP-A-6-255909

  When an earthquake occurs, in the elevator system, suspension means such as a main rope or belt that suspends the elevator car, or a speed-control rope used for a speed-control device that detects speed abnormalities in the car, are not installed in the hoistway. It may shake greatly. Therefore, as in the elevator apparatus described in Patent Document 1, when the landing plate fixed to the hoistway fixing body via a bracket, an attachment arm, or the like is disposed so as to protrude toward the car side, it is greatly shaken by an earthquake. There was a risk that the main rope, speed control rope, etc. could be caught on the landing plate and the elevator operation could not be continued.

  In particular, in an elevator apparatus installed in a high-rise building with a long ascending / descending stroke, the main rope and the speed-control rope are inevitably long, so that there is a problem that the above-mentioned problems are likely to occur due to large shaking caused by an earthquake. It was.

The present invention has been made to solve the above-mentioned problems, and its purpose is to safely operate the elevator even when the main rope, the speed-control rope, etc. are greatly shaken in the hoistway due to the earthquake. It is to provide an elevator apparatus that can be continued.

An elevator apparatus according to the present invention is arranged corresponding to a landing position of a car that moves up and down in an elevator hoistway, and is detected by a detecting device provided in the car, and the landing plate is fixed to the hoistway. Fixing means for fixing to the body, and the fixing means has a predetermined load on the landing plate or the fixing means by the load of the main rope, the speed regulating rope, the compensation rope or by the impact when each of the ropes comes into contact. Is configured to be detached from the hoistway fixing body.

With the elevator apparatus according to the present invention , the operation of the elevator can be safely continued even when the main rope, the speed regulating rope, etc. are greatly shaken in the hoistway due to the earthquake.

  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 a configuration diagram of an elevator apparatus according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 is an elevator hoistway, 2 is a car which is guided by a car guide rail (not shown in FIG. 1) standing up and down in the hoistway 1, and 3 is an elevator. Guide weights (not shown) which are erected in the road 1 and are moved up and down in the hoistway 1 in the direction opposite to the car 2, 4 are the car 2 and the counterweight 3. It is the main rope suspended in a fishing bottle type. The main rope 4 can be replaced by other suspension means such as a belt.

  Reference numeral 5 denotes a drive sheave of an elevator hoisting machine (not shown), which is rotatably provided in a machine room 6 above the hoistway 1, and a main rope 4 is wound around. A sled wheel, which is provided so as to be movable, is arranged above the counterweight 3 and on which a part of the main rope 4 is wound. A compensation rope 9 for compensating for the weight imbalance of the main rope 4 caused by the position is rotatably provided at the bottom of the hoistway 1, and a part of the compensation rope 8 is wound around to provide a predetermined tension to the compensation rope 8. It is a tension wheel to be granted. In addition, in an elevator apparatus having a short lifting / lowering stroke of the car 2 or an elevator apparatus having a slow lifting / lowering speed, a predetermined chain is balanced with the lower part of the car 2 instead of the compensation rope 8 stretched by the tension wheel 9. Some are connected to the lower part of the weight 3 and are suspended in the hoistway 1. The car 2 moves up and down in the hoistway 1 in conjunction with the movement of the main rope 4 as the main rope 4 moves in conjunction with the rotation of the driving sheave 5.

  Reference numeral 10 denotes a speed control device for emergency stopping the car 2 when the raising / lowering speed of the car 2 exceeds a predetermined range of the rated speed. 1 includes a speed control sheave 11 that is rotatably provided in the machine room 6 and a speed control tension wheel 12 that is rotatably provided in a pit portion of the hoistway 1. And an endless speed control rope 13 wound around the speed control sheave 11 and the speed control tension wheel 12, an emergency stop device 14 provided at the lower part of the car 2, and one end for speed control. The rope 13 is composed of a connecting rod 15 having the other end connected to the safety device 14. The speed governor 10 detects the ascending / descending speed of the car 2 based on the rotational speed of the speed governing sheave 11, and when the ascending / descending speed of the car 2 exceeds a predetermined range of the rated speed, The emergency stop device 14 is actuated by braking the movement of the rope 13, and the car 2 is urgently stopped in the hoistway 1.

  Reference numeral 16 denotes a plurality of landing plates provided on a hoistway fixing body such as a car guide rail, a hoistway beam, a hoistway wall, and the like, and 17 is a car 2. , A detecting device for detecting each landing plate 16 when the car 2 is raised and lowered to identify the exact landing position of the car 2, and 18 an elevator hoisting machine for detecting and driving the driving sheave 5 A control means 19 connected to the device 17 and controls various controls, and 19 is an earthquake detection device for detecting an earthquake. The car position detection device comprising the landing plate 16 and the detection device 17 includes, for example, a detection device 17 including a light projector and a light receiver that receives light from the light projector, and light from the light projector when the car 2 is raised and lowered. It is comprised from the landing plate 16 arrange | positioned so that it may interrupt | block.

  Here, FIG. 2 is a front view of an essential part of the elevator apparatus according to Embodiment 1 of the present invention, FIG. 3 is a plan view thereof, and FIG. 4 is a side view thereof, showing a mounting state of the landing plate 16. is there. 2 to 4, the landing plate 16 having a substantially L shape is arranged so that a part thereof protrudes toward the car 2, and a hoistway is provided via an attachment arm 20 that supports the landing plate 16. It is fixed to a car guide rail 21 which is a fixed body. The fixing means for fixing the landing plate 16 to the hoistway fixing body is such that when a predetermined load is applied to the landing plate 16 or the fixing means, a preset portion of the fixing means is destroyed. Or by loosening, it is configured to be detached from the hoistway fixing body. When the fixing means is detached from the hoistway fixing body due to the action of a predetermined load, the landing plate 16 and a part of the fixing means provided on the landing plate 16 are in the hoistway 1. Fall into.

  The mounting arm 20 extends from the car guide rail 21 which is a hoistway fixing body in order to arrange the landing plate 16 in accordance with the position of the detection device 17. The flange portion of the guide rail 21 for the car is composed of one end portion of the mounting arm 20 disposed so as to contact the back surface of the car and a rail clip 24 attached to one end portion of the mounting arm 20 by the mounting bolt 22 and the mounting nut 23. It is fixed so that it can be pinched. That is, the fixing means in the first embodiment includes the mounting arm 20, the mounting bolt 22, the mounting nut 23, and the rail clip 24. The rail clip 24 is made of a predetermined material (resin, etc.), dimensions (thickness, etc.), etc., and has a predetermined strength that is destroyed when a predetermined load acts on the landing plate 16 or the fixing means. Designed to have.

  25, one end is provided on the mounting arm 20 and the other end is provided on the hoistway wall 1a adjacent to the mounting arm 20, and the fixing means is fixed to the hoistway by applying a predetermined load to the landing plate 16 or the fixing means. The fall prevention device prevents the landing plate 16 and a part of the fixing means provided on the landing plate 16 from falling into the hoistway 1 when it is removed from the body. In addition, FIG. 5 is a figure which shows the fall prevention apparatus in Embodiment 1 of this invention. 6 is a front view of the main part showing the state of the elevator apparatus according to Embodiment 1 of the present invention during an earthquake. FIG. 7 shows the state where the main rope 4 is caught on the mounting arm 20 due to the shaking of the earthquake. It is a principal part side view which shows the state after the earthquake of the elevator apparatus in Embodiment 1 of invention, A predetermined load acts on a fixing means when the main rope 4 collides with or is hooked on the attachment arm 20, and a fixing means is The state where it has detached from the guide rail 21 for cars is shown, respectively.

  Next, an elevator control device using the car position detection device and an elevator control method during an earthquake will be described. FIG. 8 is a block diagram of the elevator control apparatus according to Embodiment 1 of the present invention, and FIG. 9 is a flowchart showing the operation of the elevator control apparatus according to Embodiment 1 of the present invention. 8 and 9, reference numeral 26 denotes the floor position data of the landing plate 16 detected by the detection device 17 provided in the elevator car 2. The landing plate 16 is set to the normal landing position of the car 2. A data storage unit in which various data such as floor position data (hereinafter referred to as “first floor position data”) detected when arranged correspondingly is stored in advance, 27 is an earthquake from the earthquake detection device 19 The operation switching unit outputs an operation switching command for switching the operation of the elevator from the normal operation to the inspection operation of the landing plate 16 based on the earthquake information that is sometimes input.

  Reference numeral 28 denotes the first floor position data stored in the data storage unit 26 and floor position data actually detected by the detection device 17 during the inspection operation after the earthquake (hereinafter referred to as “second floor”). Data comparison unit 29, which is referred to as “position data”, 29 is a determination unit that determines whether the landing plate 16 is abnormal based on the comparison result in the data comparison unit 28, and 30 is based on the determination result of the determination unit 29 The landing registration unit 31 for registering the landing of the floor corresponding to the landing plate 16 determined to be abnormal is automatically inspected for the landing plate 16 based on the operation switching command from the operation switching unit 27. And an operation control unit that appropriately performs the operation control of the car 2 after the inspection operation based on the registration information of the hall registration unit 30. For example, when the determination unit 29 determines that there is an abnormality in a part of the landing plate 16, the operation control unit 31 registers the landing as the landing of the floor corresponding to the abnormal landing plate 16. Operation of the car 2 is controlled so that the operation to the landing registered in the section 30 is stopped and the operation to the landing of the floor corresponding to the landing plate 16 determined to be normal is continued even after the inspection operation. To do. Further, 32 is a notification means for notifying an elevator user at each landing or a user in the car 2 of an abnormality in the landing plate 16 or a partial stoppage of service based on the registration information of the landing registration section 30. It is.

  In the elevator control apparatus having such a configuration, the landing position of the car 2 is controlled based on the first floor position data stored in advance in the data storage unit 26 during normal operation of the elevator (step S101). Here, when the occurrence and end of an earthquake are detected by the earthquake detection device 19 (steps S102 and S103), earthquake information is output from the earthquake detection device 19 to the operation switching unit 27. In the operation switching unit 27, based on the earthquake information input from the earthquake detection device 19, an operation switching command for switching the operation of the elevator from the normal operation to the inspection operation is output to the operation control unit 31, and the above operation switching is performed. The operation control unit 31 to which the command has been input automatically starts an unmanned inspection operation for unattended inspection of the landing plate 16 (step S104).

  In this inspection operation, first, the raising / lowering speed of the car 2 is set to a predetermined inspection speed, for example, one tenth of the raising / lowering speed of the car 2 during normal operation (step S105). And the raising / lowering distance from the current position of the car 2 to the upper terminal floor and the lower terminal floor is calculated (step S106), and the car 2 is moved at a low speed to the shorter one of the upper and lower terminal floors, which requires a shorter distance. Here, for example, when the distance from the current position of the car 2 to the upper terminal floor is shorter, the car 2 is raised to the upper terminal floor at a low speed (step S107). Then, after arriving at the upper terminal floor, it is moved to the lower terminal floor at a lower speed, and when moving (lowering) once between both terminal floors, the abnormality of each landing plate 16 is checked (step S108). . On the other hand, when the distance from the current position of the car 2 to the lower terminal floor is shorter, the car 2 is first lowered to the lower terminal floor at a low speed (step S109). Then, after arriving at the lower terminal floor, it is moved to the upper terminal floor at a lower speed, and when moving (rising) once between both terminal floors, the abnormality of each landing plate 16 is checked (step S110). .

  In the abnormal inspection of each landing plate 16 that is performed when the car 2 moves at low speed on both terminal floors, first, while the car 2 moves low speed once between both terminal floors, the actual detection after the earthquake is performed by the detection device 17. The floor position data of each landing plate 16, that is, the second floor position data is acquired (step S111), and the detection result is output to the data comparison unit 28. The data comparison unit 28 compares the second floor position data acquired during the inspection operation with the first floor position data stored in advance in the data storage unit 26 (step S112), and the comparison is made. The result is output to the determination unit 29. And the determination part 29 determines the presence or absence of abnormality of the landing plate 16 based on the comparison result input from the data comparison part 28 (step S113). Here, in the determination unit 29, for example, when there is information in the first floor position data, but there is no information in the second floor position data, the normal landing of the car 2 that should be originally intended. Assuming that the landing plate 16 does not exist at the position, it is determined that there is an abnormality in the landing plate 16 arranged at the landing position.

  The landing on the floor corresponding to the landing plate 16 determined to be abnormal by the determination unit 29 is registered in the landing registration unit 30 (step S114). Then, the car 2 moves at low speed between both terminal floors, and all the second floor position data in the hoistway 1 is acquired, and the corresponding landing is registered in the landing registration unit 30 so that the inspection operation is performed. finish. After completion of the inspection operation, the operation control unit 31 appropriately performs the operation control of the car 2 based on the registration information of the hall registration unit 30. For example, the floor of the hall registered in the hall registration unit 30 is set as the operation suspension floor, and the service to the hall of that floor is suspended (step S115). Moreover, the driving | operating to the landing of the floor corresponding to the landing plate 16 determined that there is no abnormality continues after an inspection driving | operation. Specifically, among the registration of the car call input from the operation panel (not shown) in the car 2 and the hall call input from the operation panel of the hall, the one for the operation stop floor is disabled, Cancel a call to an operation stop floor that has already been registered. In addition, the elevator users at the halls and the users in the car 2 are notified of an abnormality in the landing plate 16 and a partial stop of the service.

  According to the first embodiment of the present invention, the fixing means for fixing the landing plate 16 to the hoistway fixing body is a hoistway fixing body when a predetermined load acts on the landing plate 16 or the fixing means. For example, even if the main rope 4, the speed regulating rope 13, the compensation rope 8, etc. are caught on the landing plate 16 or the mounting arm 20 due to the shaking of the earthquake, the main rope The fixing means is detached from the hoistway fixing body due to a load such as 4 or an impact at the time of contact, and the main rope 4 or the like can be returned to the original state.

  Further, when a predetermined load is applied to the landing plate 16 or the fixing means, only the rail clip 24 is destroyed, so that the fixing means having the above-described function can be provided with a simple configuration. In addition, it can respond only by replacement | exchange of the rail clip 24 at the time of restoration, and it is also possible to reuse the attachment arm 20, the landing plate 16, etc. FIG.

  Further, since the fall prevention device 25 is provided between the fixing means and the hoistway fixing body, even when a predetermined load acts on the landing plate 16 or the fixing means, the landing plate 16 and the landing plate A part of the fixing means provided in 16 can be prevented from falling into the hoistway 1. For this reason, it is also possible to prevent an accident in which other elevator devices installed in the hoistway 1 are damaged when the dropped landing plate 16 and the like come into contact with each other.

  On the other hand, by performing an inspection operation for checking whether there is an abnormality in the landing plate 16 after the earthquake, only the operation to the landing corresponding to the abnormal landing plate 16 is stopped, and there is no abnormality in the landing plate. The driving to the landing corresponding to 16 can be continued. That is, the elevator operation can be continued for landings other than the floor landing corresponding to the landing plate 16 that has been detached from the hoistway fixed body, and even after an earthquake, the elevator operation can be continued. It is possible to prevent such a situation that is completely impossible to continue. In addition, by performing the said check operation automatically after an earthquake, it becomes possible to restore | restore the operation of an elevator before the elevator maintenance staff arrives after an earthquake, and a user can also be rescued early. In addition, since the information on the operation stop floor is notified by the notification means 32 to the users who are in other halls or who have entered the car 2 after the earthquake, it is possible to prevent subsequent confusion and smooth service. Can be provided.

Embodiment 2. FIG.
FIG. 10 is a front view of an essential part of the elevator apparatus according to Embodiment 2 of the present invention, and shows a state in which the main rope 4 is hooked on the mounting arm 20 due to the shaking of the earthquake. In FIG. 10, reference numeral 33 denotes a rail clip that sandwiches the flange portion of the car guide rail 21 with one end portion of the mounting arm 20. A predetermined load acts on the landing plate 16 or the fixing means, thereby It is designed to have a predetermined strength such that only the portion fixed to the flange portion of the rail 21 is broken. Specifically, the above-described strength can be realized by configuring only a portion of the rail clip 33 fixed to the flange portion of the car guide rail 21 with resin or reducing the thickness. It is.

  Even with this configuration, when a predetermined load is applied to the landing plate 16 or the fixing means, the fixing means can be configured to be detached from the hoistway fixing body. In addition, when a predetermined load is applied to the landing plate 16 or the fixing means, the portion of the rail clip 33 other than the portion fixed to the flange portion of the car guide rail 21 is not destroyed. Falling objects into the hoistway 1 can be minimized. The rest of the configuration and effects are the same as those of the first embodiment.

Embodiment 3 FIG.
FIG. 11 is a front view of an essential part of an elevator apparatus according to Embodiment 3 of the present invention, and shows a state in which the main rope 4 is hooked on a mounting arm 34 (to be described later) due to an earthquake. In FIG. 11, reference numeral 34 denotes an attachment arm extending from the car guide rail 21 which is a hoistway fixing body in order to arrange the landing plate 16 in accordance with the position of the detection device 17, and from the car guide rail 21. The part between the landing plate 16 and the landing plate 16 is designed to have a predetermined strength that is destroyed when a predetermined load is applied to the landing plate 16 or the fixing means. Reference numeral 35 denotes a normal rail clip.

  Even with this configuration, when a predetermined load is applied to the landing plate 16 or the fixing means, the fixing means can be configured to be detached from the hoistway fixing body. In FIG. 11, a part of the mounting arm 34 is designed to have a predetermined strength that is broken when a predetermined load is applied to the landing plate 16 or the fixing means. It goes without saying that the same effect can be obtained even if the entirety of 34 has a predetermined strength that is destroyed when a predetermined load is applied. The other configurations and effects are the same as those of the first embodiment.

Embodiment 4 FIG.
FIG. 12 is a front view of an essential part of the elevator apparatus according to Embodiment 4 of the present invention, and shows a state in which the main rope 4 is hooked on the mounting arm 20 due to the shaking of the earthquake. In FIG. 12, 36 is a mounting bolt for mounting the rail clip 35 to one end of the mounting arm 20, and this mounting bolt 36 is destroyed when a predetermined load is applied to the landing plate 16 or the fixing means. It is designed to have a predetermined strength. Even in such a configuration, when a predetermined load is applied to the landing plate 16 or the fixing means, the landing plate 16 and a part of the fixing means provided on the landing plate 16 are detached from the hoistway fixing body. Can be configured. Other than that, the configuration and effects similar to those of the first embodiment are obtained.

It is a block diagram of the elevator apparatus in Embodiment 1 of this invention. It is a principal part front view of the elevator apparatus in Embodiment 1 of this invention. It is a principal part top view of the elevator apparatus in Embodiment 1 of this invention. It is a principal part side view of the elevator apparatus in Embodiment 1 of this invention. It is a figure which shows the fall prevention apparatus in Embodiment 1 of this invention. It is a principal part front view which shows the state at the time of the earthquake of the elevator apparatus in Embodiment 1 of this invention. It is a principal part side view which shows the state after the earthquake of the elevator apparatus in Embodiment 1 of this invention. 1 is a block configuration diagram of an elevator control device in Embodiment 1 of the present invention. FIG. It is a flowchart which shows operation | movement of the control apparatus of the elevator in Embodiment 1 of this invention. It is a principal part front view of the elevator apparatus in Embodiment 2 of this invention. It is a principal part front view of the elevator apparatus in Embodiment 3 of this invention. It is a principal part front view of the elevator apparatus in Embodiment 4 of this invention.

Explanation of symbols

1 hoistway, 1a hoistway wall, 2 cage, 3 counterweight, 4 main rope,
5 Driving sheaves, 6 Machine room, 7 Baffle, 8 Compensation rope, 9 Tension wheel,
10 speed control device, 11 speed control sheave, 12 speed control tension wheel,
13 speed control rope, 14 emergency stop device, 15 connecting rod,
16 landing plate, 17 detection device, 18 control means, 19 earthquake detection device,
20 mounting arms, 21 guide rails for cars, 22 mounting bolts,
23 mounting nut, 24 rail clip, 25 fall prevention device,
26 data storage unit, 27 operation switching unit, 28 data comparison unit, 29 determination unit,
30 landing registration unit, 31 operation control unit, 32 notification means,
33 rail clip, 34 mounting arm, 35 rail clip,
36 Mounting bolt

Claims (6)

A landing plate that is arranged corresponding to the landing position of a car that goes up and down in the elevator hoistway, and that is detected by a detection device provided in the car;
Fixing means for fixing the landing plate to a hoistway fixing body;
With
Said fixing means, a main rope and a speed governor rope, the impact when the load of the compensating rope or each said rope is in contact, by a predetermined load is applied to the landing plate or said fixing means, the lifting An elevator apparatus configured to be detached from a road fixed body. The fixing means includes
A mounting arm for supporting the landing plate,
A rail clip that holds the guide rail together with the mounting arm;
A mounting bolt for mounting the rail clip to the mounting arm;
Equipped with a,
By the predetermined load acts on the landing plate or said fixing means, said rail clip is configured to disengage from the shaft fixing member is destroyed before said mounting arm and said mounting bolt is broken elevator device according to claim 1, characterized in that the. 3. The elevator apparatus according to claim 2, wherein only a part of the rail clip fixed to the flange portion of the guide rail is made of resin. The fixing means includes
A mounting arm for supporting the landing plate,
A rail clip that holds the guide rail together with the mounting arm;
A mounting bolt for mounting the rail clip to the mounting arm;
Equipped with a,
By the predetermined load acts on the landing plate or said fixing means, said mounting arm is configured to disengage from the shaft fixing member is destroyed before said rail clip and said mounting bolt is broken elevator device according to claim 1, characterized in that the. The fixing means includes
A mounting arm for supporting the landing plate,
A rail clip that holds the guide rail together with the mounting arm;
A mounting bolt for mounting the rail clip to the mounting arm;
Equipped with a,
By the predetermined load acts on the landing plate or said fixing means, said mounting bolt is configured to disengage from the shaft fixing member is destroyed before the mounting arm and the rail clip is broken elevator device according to claim 1, characterized in that the. When said fixing means by a predetermined load acts on the landing plate or said fixing means out of the hoistway fixed body, the landing plate is dropping prevention device that prevents falling into the hoistway elevator device according to any one of claims 1 to 5, characterized in that a provided.

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