JP6521184B1 - Control device and elevator system having a function of maintaining the position of the elevator car at a position suitable for work - Google Patents

Abstract

An elevator control device capable of maintaining the position of a car at a position suitable for work. The elevator control device includes a detection unit that detects that the worker is in the elevator car, and a side of the car when the worker detects the worker when the elevator mode is the maintenance operation mode. The car-side contact body provided on the side is projected, the car is moved to a preset position, and the hoistway-side movement suppressing body provided on the elevator shaft side of the elevator is moved to the car side contact body And a control unit configured to control the movement of the car by bringing the hoistway-side movement suppressing body into contact with the car-side contact body.

Description

  The present invention relates to a control device and an elevator system having a function of maintaining the position of an elevator car at a position suitable for work.

  For example, Patent Document 1 discloses an elevator system. The elevator system can stop the car at the time of detection of a worker on the car.

Japanese Unexamined Patent Publication No. 62-96285

  However, in the elevator system described in Patent Document 1, an operation control error may occur. In this case, the car may not stop as scheduled. Therefore, even if the control described in Patent Document 1 is applied to work from above the car, the car may not be maintained at a suitable position for work.

  This invention was made in order to solve the above-mentioned subject. An object of the present invention is to provide an elevator control device and an elevator system capable of maintaining the position of a car at a position suitable for work.

A control device of an elevator according to the present invention includes a detection unit that detects that the worker is in the elevator car, and a detection unit that detects the worker when the elevator mode is the maintenance operation mode. The car side contact body provided on the car side is protruded, and the car is moved to a preset position, and the hoistway side movement suppressing body provided on the elevator shaft side of the elevator is used as the car side contact body A control unit for suppressing the movement of the car by moving the elevator side movement suppressing body to the car side contact body, and a case unit containing the detection unit and the control unit; And the control unit moves the car to a position corresponding to the lower portion of the casing when the winding machine is provided above the casing, and thereafter, the control unit Correspond to the bottom From the switch first state provided in a position when it is operated in the second state, of said car by contacting the casing hoistway movement restraining member corresponding to the bottom of the cage-side contact body A hoistway-side movement restraining body corresponding to the lower part of the casing when the switch provided at the position corresponding to the lower part of the casing is operated from the second state to the first state to suppress movement released from contact with the car-side contact member, while the Ru to a position corresponding to the upper housing part moving the cage, a switch provided at a position corresponding to the lower portion of the housing portion When the raising operation of the car is set by the manual switch provided in the car without being operated from the first state, a hoistway-side movement restraining body corresponding to the lower portion of the casing portion in the car-side contact body On the housing without contacting Moving the cage to a position corresponding to, then, when the switch provided at a position corresponding to the upper housing part is operated from the first state to the second state, the said cage-side contact body The movement of the car is suppressed by bringing the shaft side movement suppressing body corresponding to the upper part of the housing into contact, and the switch provided at the position corresponding to the upper part of the housing is the first state from the second state If it is operated in the state, said hoistway shift suppressing body corresponding to the upper housing part and released from contact with the car-side contact member, Before moving the cage to a position corresponding to the hoisting machine On the other hand, when the raising operation of the car is set by the manual switch without operating the switch provided at the position corresponding to the upper part of the casing from the first state, the car side contact body Correspond to the top of the housing The car is moved to a position corresponding to the hoist without contacting the hoistway side movement suppressing body, and then the switch provided at the position corresponding to the hoist changes from the first state to the second state Movement of the car is suppressed by bringing the hoistway-side movement restraining body corresponding to the hoist against the car-side contact body when in operation.

An elevator system according to the present invention includes a detection device for detecting an operator in an elevator car, a hoistway-side movement restraining body provided on the elevator shaft side of the elevator, and a car side provided on the car side. When the contact body and the elevator mode are the maintenance operation mode, when the detection device detects the operator, the car side contact body is protruded and the car is moved by the operation of the operator The car is moved to a position set in advance, the hoistway-side movement suppressing body is moved to the car side contact body side, and the carway-side movement suppressing body is brought into contact with the car side contact body. A controller that suppresses movement of the housing, wherein the controller includes an outer casing, and the casing is provided with a hoist above the casing; Moving the cage to a position corresponding to the lower, then, if the switch provided at a position corresponding to the lower portion of the housing portion is operated from the first state to the second state, on the car-side contact body The movement of the car is suppressed by bringing the shaft side movement suppressing body corresponding to the lower part of the housing part into contact, and the switch provided at the position corresponding to the lower part of the housing part is the second state from the second state When operated in the 1 state, the hoistway side movement suppressing body corresponding to the lower part of the housing part is released from contact with the car side contact body, and the car is moved to the position corresponding to the upper part of the housing part while not Ru is, the the switch provided at a position corresponding to the lower housing part is not operated from the first state, the torque-increasing operation of the cage is set by a manual switch provided in the car If the car side contact Wherein the lower housing part without contacting the hoistway shift suppressing body corresponding to the position corresponding to the upper portion of the casing to move the car, then a position corresponding to the upper portion of the housing portion the move from the switch, which is provided with a first state when operated in the second state, of said car by contacting the corresponding to the upper housing part hoistway movement restraining member on the car-side contact bodies When the switch provided at the position corresponding to the upper part of the housing part is operated from the second state to the first state, the hoistway side movement suppressing body corresponding to the upper part of the housing part is released from contact with the car-side contact member, until said position corresponding to the hoisting machine while Before moving the car, switch the first state, which is provided at a position corresponding to the upper portion of the casing Not operated from the front by the manual switch When the rising operation of the car is set, the car is not moved to the position corresponding to the hoisting machine without the hoistway-side movement suppressing body corresponding to the lower part of the casing contacting the car-side contact body. the moved, then, the hoisting switch provided at a position corresponding to the machine shaft side movement restraining member corresponding to the hoisting machine to the car-side contact member when operated from the first state to the second state Control the movement of the car by bringing them into contact with each other.

  According to these inventions, movement of the car is suppressed by bringing the hoistway-side movement suppressing body into contact with the car-side contact body. Thus, the position of the car can be maintained at a position suitable for work.

FIG. 1 is a configuration diagram of an elevator system in a first embodiment. FIG. 1 is a perspective view of the main part of an elevator system in a first embodiment. FIG. 1 is a perspective view of the main part of an elevator system in a first embodiment. FIG. 1 is a perspective view of the main part of an elevator system in a first embodiment. FIG. 2 is a side view of the main part of the elevator system in the first embodiment. FIG. 1 is a perspective view of the main part of an elevator system in a first embodiment. FIG. 1 is a perspective view of the main part of an elevator system in a first embodiment. FIG. 1 is a perspective view of the main part of an elevator system in a first embodiment. FIG. 1 is a perspective view of the main part of an elevator system in a first embodiment. FIG. 6 is a flowchart for describing an overview of the operation of a control device of an elevator system in Embodiment 1. FIG. FIG. 6 is a flowchart for describing an overview of the operation of a control device of an elevator system in Embodiment 1. FIG. FIG. 2 is a hardware configuration diagram of a control device of an elevator system in a first embodiment.

  An embodiment of the present invention will be described with reference to the attached drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals. The redundant description of the relevant part is simplified or omitted as appropriate.

Embodiment 1
FIG. 1 is a block diagram of an elevator system according to a first embodiment.

  The elevator system of FIG. 1 is an elevator system without a machine room. In the said elevator system, the hoistway 1 penetrates each floor of a building. Each of the plurality of landings not shown is provided on each floor of the building. Each of the plurality of landings faces the hoistway 1.

  The hoisting machine 2 is provided at the top of the hoistway 1. The sheave 3 is attached to the rotation shaft of the hoisting machine 2. The main rope 4 is wound around a sheave 3.

  A pair of car side guide rails (not shown) are provided in the hoistway 1. A pair of weight-side guide rails (not shown) is provided in the hoistway 1.

  The car 5 is provided inside the hoistway 1. The car 5 is guided by a pair of car side guide rails. The car 5 is supported on one side of the main rope 4. The balance weight 6 is provided inside the hoistway 1. The balance weight 6 is guided by the pair of weight side guide rails. The balance weight 6 is supported on the other side of the main rope 4.

  The upper detection device 7 is provided on the ceiling of the car 5. For example, the upper side detection device 7 is provided so that a worker at the ceiling of the car 5 can be detected by a camera. For example, the upper detection device 7 is provided to be able to detect an operator at the ceiling of the car 5 by means of a pressure sensing mat. For example, the upper detection device 7 is provided so as to be able to detect the worker at the ceiling of the car 5 by recognizing the detection piece embedded in the worker's work clothes or safety shoes. At normal times, power to the upper detection device 7 is supplied from a commercial power source. For example, the upper detection device 7 is provided so that it can be detected by a switch that operates when a worker on the ceiling of the car 5 raises a safety fence folded on the ceiling of the car 5. At the time of power failure, the power to the upper detection device 7 is supplied from the battery.

  The lower detection device 8 is provided below the hoistway 1. For example, the lower detection device 8 is provided so that a worker located at the lower part of the hoistway 1 can be detected by a camera. For example, the lower detection device 8 is provided so as to be able to detect an operator at the lower part of the hoistway 1 by the pressure sensing mat. For example, the lower detection device 8 is provided so as to be able to detect the worker at the lower part of the hoistway 1 by recognizing the detection piece embedded in the worker's work clothes or safety shoes. For example, the lower detection device 8 is provided so as to be able to be detected by an operator at the lower part of the hoistway 1 operating the illumination device that illuminates the lower work area of the hoistway 1. At normal times, power to the lower detection device 8 is supplied from a commercial power source. At the time of power failure, the power to the lower detection device 8 is supplied from the battery.

  The car side rise suppressing body 9 is provided on the upper part of the hoistway 1. For example, the car side rise suppressing body 9 is provided on one of the pair of car side guide rails.

  The car-side descent suppressing body 10 is provided at the lower part of the hoistway 1. For example, the car-side descent suppressing body 10 is provided on one of the pair of car-side guide rails.

  The weight reduction suppressing body 11 is provided at the lower part of the hoistway 1. For example, the weight-side lowering restraint body 11 is provided on one of the pair of weight-side guide rails.

  The first shaft side movement suppressing body 12 is provided on the upper portion of the shaft 1. The first shaft side movement suppression body 12 is provided below the car side elevation suppression body 9. For example, the first shaft side movement suppressing body 12 is provided on one of the pair of car side guide rails.

  The second shaft side movement suppressing body 13 is provided on the upper portion of the shaft 1. The second shaft side movement suppressing body 13 is provided between the car side rise suppressing body 9 and the first shaft side movement suppressing body 12. For example, the second shaft side movement suppressing body 13 is provided on one of the pair of car side guide rails.

  The third shaft side movement suppressing body 14 is provided on the upper portion of the shaft 1. The third shaft side movement suppressing body 14 is provided between the car side rise suppressing body 9 and the second shaft side movement suppressing body 13. For example, the third shaft side movement suppressing body 14 is provided on one of the pair of car side guide rails.

  The car side contact body 15 is provided on the car 5. For example, the car-side contact 15 is provided on the top of the car 5.

  The weight side contact body 16 is provided on the balance weight 6. For example, the weight side contact body 16 is provided on the upper portion of the balance weight 6.

  The first shaft side switch 17 is provided on the upper portion of the shaft 1. The first shaft side switch 17 is provided at a position corresponding to the first shaft side movement suppressing body 12. For example, the position in the vertical direction of the first shaft side switch 17 is set equal to the position in the vertical direction of the first shaft side movement suppressing body 12.

  The second shaft side switch 18 is provided at the top of the shaft 1. The second shaft side switch 18 is provided at a position corresponding to the second shaft side movement restraining body 13. For example, the position in the vertical direction of the second shaft-side switch 18 is set equal to the position in the vertical direction of the second shaft-side movement restraining body 13.

  The third shaft side switch 19 is provided at the top of the shaft 1. The third shaft side switch 19 is provided at a position corresponding to the third shaft side movement restraining body 14. For example, the position in the vertical direction of the third shaft side switch 19 is set to be equal to the position in the vertical direction of the third shaft side movement suppressing body 14.

  The control device 20 is provided at the top of the hoistway 1. The control device 20 includes a housing unit 20a, a detection unit 20b, and a control unit 20c.

  The housing unit 20a forms an outer shell. For example, the housing unit 20a is formed in a rectangular shape. The housing portion 20 a is fixed to the wall surface of the hoistway 1.

  The detection unit 20b is housed in the housing unit 20a. Detection unit 20 b is provided to be able to detect that the worker is at the ceiling of car 5 based on the detection result of upper side detection device 7. The detection unit 20 b is provided so as to detect that the worker is at the lower part of the hoistway 1 based on the detection result of the lower detection device 8.

  The control unit 20c is housed in the housing unit 20a. The control unit 20c is provided to control the entire elevator system.

  At the time of maintenance work of the elevator, the mode of the elevator is set to the mode of the maintenance work. When the worker is on the ceiling of the car 5 when the mode of the elevator is the mode of maintenance work, the upper detection device 7 detects the worker who is on the ceiling of the car 5.

  At this time, in the control device 20, the detection unit 20b detects that the worker is at the ceiling of the car 5. The control unit 20c causes the car side contact member 15 to horizontally protrude in the direction of the car side rise suppressing body 9 by the actuating mechanism (not shown) when the detection unit 20b detects the worker. The operating mechanism is an actuator by an electromagnet, a motor, a power cylinder, and the like. Further, the weight-side contact body 16, the first shaft side movement suppressing body 12, the second shaft side movement suppressing body 13 and the third shaft side movement suppressing body 14 also have the same operation mechanism.

  Thereafter, when the operator sets the raising operation of the car 5 with a manual switch (not shown), in the control device 20, the control unit 20c automatically raises the car 5 to a height optimum for the work of the lower part of the housing 20a. When the car 5 reaches a height suitable for the work of the lower part of the housing 20a, the control unit 20c automatically stops the car 5. At this time, the control unit 20c enables the dynamic brake of the hoisting machine 2.

  Thereafter, the worker operates the first shaft side switch 17 from the first state to the second state. When the first shaft side switch 17 is in the second state, in the control device 20, the control unit 20c causes the operation mechanism to move the first shaft side movement suppressing body 12 to the car 5 side. At this time, the first shaft side movement suppression body 12 contacts the car side contact body 15. As a result, the movement of the car 5 is suppressed. In this state, the worker works on the lower part of the control device 20.

  Thereafter, the operator operates the first shaft side switch 17 from the second state to the first state. When the first shaft side switch 17 is in the first state, in the control device 20, the control unit 20c causes the operation mechanism to move the first shaft side movement suppressing body 12 to the side opposite to the car 5 side. At this time, the first shaft side movement suppression body 12 is released from contact with the car side contact body 15. As a result, the restraint of the movement of the car 5 is released.

  Thereafter, when the worker sets the ascending operation of the car 5 with the manual switch, the control unit 20 c in the control device 20 invalidates the dynamic brake of the hoisting machine 2. Thereafter, the control unit 20c automatically raises the car 5 to a height optimum for the work on the upper portion of the housing unit 20a. When the car 5 reaches a height optimum for the work on the upper portion of the housing 20a, the controller 20c automatically stops the car 5. At this time, the control unit 20c enables the dynamic brake of the hoisting machine 2.

  Thereafter, the worker operates the second shaft side switch 18 from the first state to the second state. When the second shaft side switch 18 is in the second state, in the control device 20, the control unit 20c causes the operation mechanism to move the second shaft side movement suppressing body 13 toward the car 5. At this time, the second shaft side movement suppression body 13 contacts the car side contact body 15. As a result, the movement of the car 5 is suppressed. In this state, the worker works on the upper part of the control device 20.

  Thereafter, the worker operates the second shaft side switch 18 from the second state to the first state. When the second hoistway-side switch 18 is in the first state, in the control device 20, the control unit 20c causes the actuating mechanism to move the second hoistway-side movement restraining body 13 to the side opposite to the car 5 side. At this time, the second shaft side movement suppression body 13 is released from contact with the car side contact body 15. As a result, the restraint of the movement of the car 5 is released.

  Thereafter, when the worker sets the ascending operation of the car 5 with the manual switch, the control unit 20 c in the control device 20 invalidates the dynamic brake of the hoisting machine 2. Thereafter, the control unit 20 c automatically raises the car 5 to a height that is optimal for the work of the hoisting machine 2. When the car 5 reaches a height suitable for the work of the hoisting machine 2, the control unit 20c automatically stops the car 5. At this time, the control unit 20c enables the dynamic brake of the hoisting machine 2.

  Thereafter, the operator operates the third shaft side switch 19 from the first state to the second state. When the third hoistway-side switch 19 is in the second state, in the control device 20, the control unit 20c causes the actuation mechanism to move the third hoistway-side movement restraining body 14 toward the car 5. At this time, the third shaft side movement suppressing body 14 contacts the car side contact body 15. As a result, the movement of the car 5 is suppressed. In this state, the worker performs work on the hoisting machine 2.

  Thereafter, the operator operates the third shaft side switch 19 from the second state to the first state. When the third hoistway-side switch 19 is in the first state, in the control device 20, the control unit 20c causes the actuating mechanism to move the third hoistway-side movement restraining body 14 to the opposite side to the car 5 side. At this time, the third shaft side movement suppression body 14 is released from contact with the car side contact body 15. As a result, the restraint of the movement of the car 5 is released.

  In the state where the dynamic brake of the hoisting machine 2 is effective, when the car 5 ascends for any reason, the car side contact body 15 gradually approaches the car side rise suppression body 9. Thereafter, when the car 5 reaches a preset position, the car-side contact body 15 contacts the car-side rise suppressor 9. As a result, the rise of the car 5 is mechanically suppressed. At this time, a safety area longer in the vertical direction than a predetermined length, for example, the height of the worker, is secured between the ceiling of the hoistway 1 and the car 5.

  When the operator enters the lower part of the hoistway 1 when the mode of the elevator is the mode of maintenance work, the lower detection device 8 detects the worker present in the lower part of the hoistway 1.

  At this time, in the control device 20, the detection unit 20b detects that the worker is at the lower part of the hoistway 1. The control unit 20c causes the car side contact member 15 to horizontally protrude in the direction of the car side lowering suppression body 10 by the operation mechanism when the detection unit 20b is detecting the worker. The control unit 20 c causes the weight side contact member 16 to horizontally protrude in the direction of the weight side lowering suppressing body 11 by the operation mechanism when the detection unit 20 b is detecting the worker.

  In the state where the dynamic brake of the hoisting machine 2 is effective, if the car 5 descends for any reason, the car-side contact 15 gradually approaches the car-side descent suppressor 10. Thereafter, when the car 5 reaches a preset position, the car-side contact body 15 contacts the car-side descent suppressing body 10. As a result, the descent of the car 5 is mechanically suppressed. At this time, between the bottom of the hoistway 1 and the bottom of the car 5, a safety area longer in the vertical direction than a predetermined length, for example, the height of the worker, is secured.

  In the state where the dynamic brake of the hoisting machine 2 is effective, when the balance weight 6 descends for any reason, the weight-side contact body 16 gradually approaches the weight-side drop suppression body 11. Thereafter, when the balance weight 6 reaches a predetermined position, the weight-side contact body 16 contacts the weight-side depression suppression body 11. As a result, the descent of the balance weight 6 is mechanically suppressed. At this time, between the bottom of the hoistway 1 and the bottom of the balance omori 6, a safety region longer in the vertical direction than a predetermined length, for example, the height of the worker, is secured.

Next, suppression of the movement of the car 5 will be described with reference to FIGS. 2 to 5.
2 to 4 are perspective views of the main part of the elevator system according to the first embodiment. FIG. 5 is a side view of the main part of the elevator system according to the first embodiment.

  As shown in FIG. 2, the car side contact body 15 includes a claw 15 a. The car side contact body 15 is provided such that the claws 15a can be moved in the direction of the guide rails of the car 5 by the operating mechanism. As shown in FIG. 2, the first shaft side movement suppressing body 12 includes a penetrating portion 12 a. The first shaft side movement suppressing body 12 is provided so that the penetrating portion 12 a can be moved in the direction of the car 5 by an operation mechanism (not shown). In FIG. 2, the claws 15 a of the car side contact member 15 are not moved in the direction of the guide rails of the car 5, and the penetrating portions 12 a of the first shaft side movement restricting body 12 are moved in the direction of the car 5. There is no state shown. The second shaft side movement suppressing body 13 and the third shaft side movement suppressing body 14 are not illustrated because they have the same configuration as the first shaft side movement suppressing body 12.

  When work is performed on the lower part of the control device 20 not shown in FIGS. 3 to 5, as shown in FIGS. 3 to 5, the first hoistway side movement restraining body 12 is a car Move to the 5 side. At this time, the claws 15 a pass through the penetration portion 12 a of the first shaft side movement suppressing body 12. In this state, when the car 5 ascends and descends, the base of the claw 15 a contacts the edge of the penetrating portion 12 a of the first shaft side movement suppressing body 12. As a result, the movement of the car 5 is suppressed.

  Although not shown, when work is performed on the upper portion of the control device 20, the second shaft side movement suppressing body 13 is moved to the side of the car 5 by the actuating mechanism described above. At this time, the claws 15 a pass through the penetrating portion of the second shaft side movement suppressing body 13. In this state, when the car 5 moves up and down, the base of the claw 15a contacts the edge portion of the through portion of the second shaft side movement suppressing body 13. As a result, the movement of the car 5 is suppressed.

  Although not shown, when work is performed on the hoisting machine 2, the third shaft side movement suppressing body 14 is moved to the side of the car 5 by the actuating mechanism described above. Under the present circumstances, nail 15a penetrates the penetration part of the 3rd movement control object. In this state, when the car 5 moves up and down, the base of the claw 15a contacts the edge of the penetrating portion of the third shaft side movement suppressing body 14. As a result, the movement of the car 5 is suppressed.

Next, suppression of the ascent of the car 5 will be described using FIGS. 6 and 7.
6 and 7 are perspective views of the main part of the elevator system according to the first embodiment.

  As shown in FIG. 6, the car side rise suppressing body 9 is provided with a notch 9a. The notch 9a opens downward.

  As shown in FIG. 7, when the car 5 ascends to a preset position, the claws 15 a of the car side contact member 15 fit in the notches 9 a of the car side rise suppressing body 9. In this state, when the car 5 ascends, the base of the claw 15a contacts the upper edge portion of the notch 9a of the car side rise suppressing body 9. As a result, the rise of the car 5 is suppressed.

Next, suppression of descent of the car 5 and suppression of descent of the balance weight 6 will be described using FIGS. 8 and 9.
8 and 9 are perspective views of the main part of the elevator system according to the first embodiment.

  As shown in FIG. 8, the car-side descent suppressing body 10 is provided with a notch 10 a. The notch 10a opens upward.

  As shown in FIG. 9, when the car 5 is lowered to a predetermined position, the claws 15 a of the car side contact member 15 are fitted in the notches 10 a of the car side lowering suppressing body 10. In this state, when the car 5 descends, the base of the claw 15a contacts the lower edge portion of the notch 10a of the car-side depressing suppression body 10. As a result, the descent of the car 5 is suppressed.

  Although not shown, the weight-side contact 16 is provided with a claw equivalent to the claw 15 a of the cage-side contact 15. The weight contact 16 is provided so that the claw can move in the direction of the guide rail of the balance weight 6 by the actuating mechanism.

  Although not shown, the weight-side descent suppressor 11 has a notch. The notch opens upward.

  When the balance weight 6 is lowered to a predetermined position, the claws of the weight-side contact body 16 are fitted in the notch of the weight-side depression suppression body 11. In this state, when the balance omori 6 descends, the base of the claw contacts the lower edge portion of the penetration portion of the omori side descent restraint body 11. As a result, the descent of the balance weight 6 is suppressed.

Next, an outline of the operation of the control device 20 at the time of maintenance work of the control device 20 and the hoisting machine 2 will be described using FIGS. 10 and 11.
10 and 11 are flowcharts for explaining the outline of the operation of the control system of the elevator system in the first embodiment.

  In step S1, the controller 20 determines whether the ascending operation of the car 5 has been set by the manual switch.

  If the ascending operation of the car 5 is not set by the manual switch in step S1, the control device 20 performs the operation of step S1. When the ascending operation of the car 5 is set by the manual switch in step S1, the control device 20 performs the operation of step S2.

  In step S2, the control device 20 raises the car 5 to a height optimum for the work of the lower part of the housing 20a. Thereafter, the control device 20 performs the operation of step S3. In step S3, the control device 20 stops the car 5 at a height optimum for the work of the lower part of the housing 20a. Thereafter, the control device 20 performs the operation of step S4.

  In step S4, the control device 20 determines whether the first shaft side switch 17 has been operated from the first state to the second state.

When the first shaft side switch 17 is operated in step S4, the control device 20 performs the operation of step S5. At step S5, control device 20 maintains car 5 in a stopped state. Thereafter, the control device 20 performs the operation of step S6. In step S6, the control device 20 determines whether the first shaft side switch 17 has been operated from the second state to the first state.

  When the first shaft side switch 17 is not operated from the second state to the first state in step S6, the control device 20 performs the operation of step S5. When the first shaft side switch 17 is operated from the second state to the first state in step S6, the control device 20 performs the operation of step S7.

  Even when the first shaft side switch 17 is not operated in step S4, the control device 20 performs the operation of step S7.

  In step S7, control device 20 determines whether the rising operation of car 5 is set by the manual switch.

  When the ascending operation of the car 5 is not set by the manual switch in step S7, the control device 20 performs the operation of step S7. When the ascending operation of the car 5 is set by the manual switch in step S7, the control device 20 performs the operation of step S8.

  In step S8, the control device 20 raises the car 5 to a height optimum for the work of the upper portion of the housing 20a. Thereafter, the control device 20 performs the operation of step S9. In step S9, the control device 20 stops the car 5 at an optimum height for the work of the upper portion of the housing unit 20a. Thereafter, the control device 20 performs the operation of step S10.

  In step S10, the control device 20 determines whether the second shaft side switch 18 has been operated from the first state to the second state.

  When the second shaft side switch 18 is operated in step S10, the control device 20 performs the operation of step S11. In step S11, the control device 20 maintains the car 5 in a stopped state. Thereafter, the control device 20 performs the operation of step S12. In step S12, the control device 20 determines whether the second shaft side switch 18 is operated from the second state to the first state.

  When the second shaft side switch 18 is not operated from the second state to the first state in step S12, the control device 20 performs the operation of step S11. When the first shaft side switch 17 is operated from the second state to the first state in step S12, the control device 20 performs the operation of step S13.

  Even when the second shaft side switch 18 is not operated in step S10, the control device 20 performs the operation of step S13.

  In step S13, control device 20 determines whether or not the ascending operation of car 5 has been set by the manual switch.

  If the ascending operation of the car 5 is not set by the manual switch in step S13, the control device 20 performs the operation of step S13. When the ascending operation of the car 5 is set by the manual switch in step S13, the control device 20 performs the operation of step S14.

  In step S14, the control device 20 raises the car 5 to an optimum height for the operation of the hoisting machine 2. Thereafter, the control device 20 performs the operation of step S15. In step S <b> 15, the control device 20 stops the car 5 at an optimum height for the operation of the hoisting machine 2. Thereafter, the control device 20 performs the operation of step S16.

  In step S16, the control device 20 determines whether the third shaft-side switch 19 has been operated from the first state to the second state.

  When the third shaft side switch 19 is operated from the first state to the second state in step S16, the control device 20 performs the operation of step S17. In step S17, the controller 20 maintains the car 5 in a stopped state. Thereafter, the control device 20 performs the operation of step S18. In step S18, the control device 20 determines whether the third shaft side switch 19 has been operated from the second state to the first state.

  When the third shaft side switch 19 is not operated from the second state to the first state in step S18, the control device 20 performs the operation of step S18. When the third shaft side switch 19 is operated from the second state to the first state in step S18, the control device 20 performs the operation of step S19.

  Even when the third shaft side switch 19 is not operated from the first state to the second state in step S16, the control device 20 performs the operation of step S19.

  In step S19, the control device 20 raises and lowers the car 5 in accordance with the operation state of the manual switch.

  According to the first embodiment described above, the elevation of the car 5 is suppressed at the time of detection of the worker. In addition, the descent of the balance weight 6 is suppressed. For this reason, it is possible to ensure the safety of the operator more reliably without requiring the buffer cap to be attached to the shock absorber of the car 5 and the shock absorber of the balance weight 6. As a result, there is no need to worry about forgetting to attach and remove the buffer cap.

  Moreover, since the buffer cap need not be attached and detached, the convenience of the user of the elevator can be secured. Specifically, the time when the elevator can not be used at the time of regular maintenance, regular inspection, function maintenance repair, breakdown repair, etc. can be reduced.

  In addition, at the time of detection of the worker, the dynamic brake of the hoisting machine 2 becomes effective. For this reason, even if it raises from the state which the cage | basket | car 5 stops, the impact at the time of the contact with the cage | basket side contact body 15 and the cage | basket side rise suppression body 9 can be made small. Even when the car 5 is lowered from the stopped state, the impact at the time of contact between the car-side contact 15 and the car-side descent suppressor 10 can be reduced. Even when the balance weight 6 is lowered from the stopped state, the impact at the time of the contact between the weight side contact body 16 and the weight side fall suppressing body 11 can be reduced.

  Further, when the car side contact body 15 comes into contact with the car side rise suppressing body 9, the car side contact body 15 fits in the notch 9 a of the car side rise suppressing body 9. For this reason, the car side contact body 15 and the car side rise suppression body 9 can be stably brought into contact with each other.

  Further, when the car side contact body 15 contacts with the car side descent suppressing body 10, the car side contact body 15 is fitted in the notch 10 a of the car side descent suppressing body 10. For this reason, the car side contact body 15 and the car side lowering suppression body 10 can be stably brought into contact with each other.

  Further, when the weight-side contact body 16 comes into contact with the weight-side depression suppression body 11, the weight-side contact body 16 fits in the notch of the weight-side depression suppression body 11. For this reason, the weight-side contact body 16 and the weight-side depression suppression body 11 can be stably brought into contact with each other.

  Further, by bringing the first shaft side movement suppressing body 12, the second shaft side movement suppressing body 13, and the third shaft side movement suppressing body 14 into contact with the car side contact body 15, the movement of the car 5 is suppressed. Therefore, the position of the car 5 can be maintained at a position suitable for work.

  Specifically, the car 5 is maintained in a state in which it is stopped at positions corresponding to the lower portion of the control device 20, the upper portion of the control device 20, and the hoisting machine 2. Therefore, maintenance work can be efficiently performed on the lower portion of the control device 20, the upper portion of the control device 20, and the hoisting machine 2.

  Further, by performing the operation for maintaining the position of the car 5 in a short time, the convenience of the user of the elevator can be secured. Specifically, the time when the elevator can not be used at the time of regular maintenance, regular inspection, function maintenance repair, breakdown repair, etc. can be reduced.

  In the control device 20, the operating states of the claws 15a of the car-side contact 15 and the claws of the weight-side contact 16 may be detected. When the mode of the elevator is the normal mode, the operation of the elevator may be blocked when the claws 15a of the car side contactor 15 or the claws of the weight side contactor 16 protrude.

  Further, by suppressing the ascent of the car 5, the descent of the balance weight 6 may be suppressed. Also in this case, in the lower part of the hoistway 1, the safety of the worker can be ensured more reliably.

  Further, the descent of the car 5 may be suppressed by suppressing the ascent of the balance weight 6. Also in this case, in the lower part of the hoistway 1, the safety of the worker can be ensured more reliably.

  In addition, a hoistway-side movement restraining body may be provided so that the work of the position of the car 5 can be performed on equipment provided inside the hoistway. For example, a hoistway-side movement suppressor may be provided to maintain the position of the car 5 at a position where the work related to the balance weight 6 can be performed. In this case, maintenance work on the balance weight 6 can be efficiently performed.

  In addition, the control device 20 of the first embodiment may be applied to an elevator having a machine room. Also in this case, the safety of the worker can be ensured more reliably, and the position of the car 5 can be maintained at a position suitable for work.

Next, an example of the control device 20 will be described with reference to FIG.
FIG. 12 is a hardware configuration diagram of a control device of the elevator system in the first embodiment.

  Each function of control device 20 can be realized by a processing circuit. For example, the processing circuit comprises at least one processor 21a and at least one memory 21b. For example, the processing circuit comprises at least one dedicated hardware 22.

  When the processing circuit includes at least one processor 21a and at least one memory 21b, each function of the control device 20 is realized by software, firmware, or a combination of software and firmware. At least one of software and firmware is described as a program. At least one of the software and the firmware is stored in at least one memory 21 b. The at least one processor 21 a implements each function of the control device 20 by reading and executing the program stored in the at least one memory 21 b. The at least one processor 21a is also referred to as a central processing unit, a processing unit, a computing unit, a microprocessor, a microcomputer, or a DSP. For example, at least one memory 21 b is a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, an EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD or the like.

  Where the processing circuit comprises at least one dedicated hardware 22, the processing circuit may be implemented, for example, in a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof. Ru. For example, each function of the control device 20 is realized by a processing circuit. For example, each function of control device 20 is realized collectively by a processing circuit.

  The respective functions of the control device 20 may be partially realized by dedicated hardware 22 and the other portions may be realized by software or firmware. For example, the function of the control unit 20c is realized by a processing circuit as the dedicated hardware 22, and the function stored in at least one processor 21a is read out by at least one processor 21a for functions other than the function of the control unit 20c. It may be realized by executing it.

  Thus, the processing circuit implements each function of the control device 20 by the hardware 22, software, firmware, or a combination thereof.

  As described above, the elevator control device and elevator system according to the present invention can be used for a system for maintaining the position of a car at a position suitable for work.

  1 hoistway, 2 hoisting machines, 3 sheaves, 4 main ropes, 5 cars, 6 balancing weights, 7 upper detection devices, 8 lower detection devices, 9 cage side lifting restraints, 9a notches, 10 car sides Lowering restraint body, 10a notch, 11 weight reduction side restraint body, 12 first hoistway side movement restraint body, 12a penetration part, 13 second hoistway side movement restraint body, 14 third hoistway side movement restraint body, 15 car side contacts Body, 15a claw, 16 weight contact body, 17 first shaft side switch, 18 second shaft side switch, 19 third shaft side switch, 20 control device, 20a housing portion, 20b detection portion, 20c control portion, 21a Processor, 21b Memory, 22 Hardware

Claims (2)

A detection unit that detects that the worker is in the elevator car;
When the mode of the elevator is the mode of maintenance work, when the detection unit detects an operator, the car side contact body provided on the side of the car is made to protrude and the car is moved to a preset position To move the hoistway-side movement suppressing body provided on the elevator shaft side of the elevator to the car side contact body, and bringing the hoistway-side movement suppressing body into contact with the car side contact body; A control unit that suppresses movement;
A housing unit housing the detection unit and the control unit;
Equipped with
The control unit moves the car to a position corresponding to the lower part of the housing when the hoist is provided above the housing, and then corresponds to the lower part of the housing When the switch provided at the specified position is operated from the first state to the second state, the car-side contact body is brought into contact with the hoistway-side movement restraining body corresponding to the lower part of the housing portion. A hoistway-side movement restraining body corresponding to the lower part of the casing when the switch provided at the position corresponding to the lower part of the casing is operated from the second state to the first state to suppress movement released from contact with the car-side contact member, while the Ru to a position corresponding to the upper housing part moving the cage, a switch provided at a position corresponding to the lower portion of the housing portion Provided in the car without being operated from the first state When the lift operation of the car is set by the dynamic switch, a position corresponding to the upper portion of the casing without contacting the hoistway-side movement restraining member corresponding to the lower portion of the casing to the car-side contact until moving the car, then the switch provided at a position corresponding to the upper housing part is when it is operated from the first state to the second state, the housing unit to the car-side contact body The movement of the car is suppressed by bringing the hoistway side movement suppressing body corresponding to the upper part into contact, and the switch provided at the position corresponding to the upper part of the casing is operated from the second state to the first state said casing hoistway movement restraining member corresponding to the upper portion of the freed from contact with the car-side contact member when the whereas Before moving the cage to a position corresponding to the hoisting machine, the Provided at a position corresponding to the upper part of the housing When the raising operation of the car is set by the manual switch without operating the selected switch from the first state, the hoistway-side movement restraining body corresponding to the upper portion of the housing unit is The car is moved to a position corresponding to the hoist without contact, and then the car provided when the switch provided at the position corresponding to the hoist is operated from the first state to the second state A control device of an elevator which suppresses movement of the car by bringing a hoistway-side movement restraining body corresponding to the winding machine into contact with a side contact body. A detection device for detecting a worker in an elevator car;
A hoistway-side movement restraining body provided on the side of a hoistway of the elevator;
A car-side contact provided on the side of the car;
When the mode of the elevator is the mode of maintenance work, the car side contact body is made to protrude when the worker detects by the detection device, and it is preset when the car moves by the operation of the worker The car is moved to the specified position, the hoistway-side movement suppressor is moved to the car-side contact body, and the car-side contact body is brought into contact with the hoistway-side movement suppressor to suppress movement of the car. Controlling device,
Equipped with
The control device includes an outer casing, and when a hoist is provided above the casing, the control device moves the car to a position corresponding to a lower portion of the casing, and then the switch provided at a position corresponding to the lower housing part is when it is operated from the first state to the second state, the shaft side transfer inhibiting corresponding to the lower portion of the housing unit to the car-side contact body When the switch provided at the position corresponding to the lower part of the casing is operated from the second state to the first state, movement of the car is suppressed by bringing the body into contact. releasing the hoistway shift suppressing body corresponding to the bottom from contact with the car-side contact member, while the Ru to a position corresponding to the upper housing part moving the cage, the bottom of the casing A switch provided at a corresponding position is operated from the first state. When the raising operation of the car is set by a manual switch provided in the car without the car, the hoistway-side movement suppressing body corresponding to the lower portion of the casing is not brought into contact with the car-side contact body. to a position corresponding to the upper portion of the casing portion to move said car, then, when the switch provided at a position corresponding to the upper housing part is operated from the first state to the second state, said car The contact of the hoistway side movement restraining body corresponding to the upper part of the casing to the side contact body suppresses the movement of the car, and the switch provided at the position corresponding to the upper part of the casing is the second When operated from the state to the first state, the hoistway side movement suppressing body corresponding to the upper part of the housing portion is released from the contact with the car side contact body, and the car is moved to the position corresponding to the winding machine while Before moving the said housing In the lower part of the casing at the car side contact body, when the raising operation of the car is set by the manual switch without operating the switch provided at the position corresponding to the upper part from the first state The car is moved to the position corresponding to the hoist without contacting the corresponding hoistway side movement suppressing body, and then the switch provided at the position corresponding to the hoist is changed from the first state to the second state The elevator system which suppresses the movement of the said cage | basket by making the hoistway side movement suppression body corresponding to the said winding machine contact the said cage | basket side contact body, when operated to the state.

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